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Document And Entity Information (USD $)
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6 Months Ended | |
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Jun. 30, 2011
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Jun. 30, 2010
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| Entity Registrant Name | ALLETE INC | |
| Entity Central Index Key | 0000066756 | |
| Current Fiscal Year End Date | --12-31 | |
| Entity Well-known Seasoned Issuer | Yes | |
| Entity Voluntary Filers | No | |
| Entity Current Reporting Status | Yes | |
| Entity Filer Category | Large Accelerated Filer | |
| Entity Public Float | $ 1,214,198,439 | |
| Entity Common Stock, Shares Outstanding | 36,454,263 | |
| Document Fiscal Year Focus | 2011 | |
| Document Fiscal Period Focus | Q2 | |
| Document Type | 10-Q | |
| Amendment Flag | false | |
| Document Period End Date | Jun. 30, 2011 |
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- Definition
If the value is true, then the document as an amendment to previously-filed/accepted document. No definition available.
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- Definition
End date of current fiscal year in the format --MM-DD. No definition available.
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- Definition
This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY. No definition available.
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- Definition
This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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- Definition
The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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- Definition
The type of document being provided (such as 10-K, 10-Q, N-1A, etc). The document type is limited to the same value as the supporting SEC submission type, minus any "/A" suffix. The acceptable values are as follows: S-1, S-3, S-4, S-11, F-1, F-3, F-4, F-9, F-10, 6-K, 8-K, 10, 10-K, 10-Q, 20-F, 40-F, N-1A, 485BPOS, 497, NCSR, N-CSR, N-CSRS, N-Q, 10-KT, 10-QT, 20-FT, POS AM and Other. No definition available.
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- Definition
A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Indicate number of shares outstanding of each of registrant's classes of common stock, as of latest practicable date. Where multiple classes exist define each class by adding class of stock items such as Common Class A [Member], Common Class B [Member] onto the Instrument [Domain] of the Entity Listings, Instrument No definition available.
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- Definition
Indicate "Yes" or "No" whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition
Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, or (4) Smaller Reporting Company. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition
State aggregate market value of voting and non-voting common equity held by non-affiliates computed by reference to price at which the common equity was last sold, or average bid and asked price of such common equity, as of the last business day of registrant's most recently completed second fiscal quarter. The public float should be reported on the cover page of the registrants form 10K. No definition available.
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- Definition
The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Indicate "Yes" or "No" if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. No definition available.
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- Definition
Indicate "Yes" or "No" if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A. No definition available.
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- Definition
Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total of all Liabilities and Stockholders' Equity items (or Partners' Capital, as applicable), including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate carrying amount, as of the balance sheet date, of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed in the balance sheet. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Other long-term investments not otherwise specified in the taxonomy, not including investments in marketable securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Other investments not otherwise specified in the taxonomy that will be realized in a short period of time, usually less than one year or the normal operating cycle, whichever is longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This represents the noncurrent liability recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement and postemployment benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of unearned shares for all classes of common stock and nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by an employee stock ownership plan (ESOP). Includes the sale of shares or the issuance treasury shares to an ESOP. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Consolidated Balance Sheet Parenthetical (USD $)
In Millions, except Per Share data, unless otherwise specified |
Jun. 30, 2011
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Dec. 31, 2010
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| Consolidated Balance Sheet Parenthetical [Abstract] | ||
| Accounts Receivable, Allowance | $ 1.0 | $ 0.9 |
| Common Stock Par Value | $ 0 | $ 0 |
| Common Stock Shares Authorized | 80.0 | 80.0 |
| Common Stock Shares Outstanding | 36.5 | 35.8 |
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- Details
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- Definition
A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Issuance value per share of no-par value common stock; generally not indicative of the fair market value per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Consolidated Statement of Income (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2011
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Jun. 30, 2010
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Jun. 30, 2011
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Jun. 30, 2010
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| Income Statement [Abstract] | ||||
| Operating Revenue | $ 219.9 | $ 211.2 | $ 462.1 | $ 444.8 |
| Operating Expenses | ||||
| Fuel and Purchased Power | 76.0 | 74.3 | 155.0 | 154.1 |
| Operating and Maintenance | 95.7 | 85.4 | 185.8 | 173.1 |
| Depreciation | 22.1 | 19.8 | 44.4 | 39.8 |
| Total Operating Expenses | 193.8 | 179.5 | 385.2 | 367.0 |
| Operating Income | 26.1 | 31.7 | 76.9 | 77.8 |
| Other Income (Expense) | ||||
| Interest Expense | (11.0) | (9.5) | (21.7) | (18.4) |
| Equity Earnings in ATC | 4.6 | 4.4 | 9.0 | 8.9 |
| Other | 1.0 | 2.2 | 1.8 | 3.2 |
| Total Other Expense | (5.4) | (2.9) | (10.9) | (6.3) |
| Income Before Non-Controlling Interest and Income Taxes | 20.7 | 28.8 | 66.0 | 71.5 |
| Income Tax Expense | 3.8 | 9.4 | 12.0 | 29.3 |
| Net Income | 16.9 | 19.4 | 54.0 | 42.2 |
| Less: Non-Controlling Interest in Subsidiaries | (0.1) | 0 | (0.2) | (0.2) |
| Net Income (Loss) Attributable to ALLETE | $ 17.0 | $ 19.4 | $ 54.2 | $ 42.4 |
| Average Shares of Common Stock | ||||
| Basic | 35.0 | 34.1 | 34.8 | 34.0 |
| Diluted | 35.1 | 34.2 | 34.9 | 34.1 |
| Basic Earnings Per Share of Common Stock | $ 0.49 | $ 0.57 | $ 1.56 | $ 1.25 |
| Diluted Earnings Per Share of Common Stock | $ 0.48 | $ 0.57 | $ 1.55 | $ 1.25 |
| Dividends Per Share of Common Stock | $ 0.445 | $ 0.44 | $ 0.89 | $ 0.88 |
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- Definition
Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Cost of electricity sold during the reporting period, operations of which is regulated by a federal or state agency. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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- Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of net Income or Loss attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
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| X | ||||||||||
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- Definition
The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of operating revenues recognized during the period. No definition available.
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| X | ||||||||||
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- Definition
Discloses the total amount of all operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Discloses the amount of operating expense for the period related to depreciation and amortization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Discloses the amount of operating expense for the period for routine plant maintenance, repairs and operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The difference between the sale price or salvage price and the book value of an asset that was sold or retired during the reporting period. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. No definition available.
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| X | ||||||||||
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- Definition
The net change during the reporting period in other current operating liabilities not otherwise defined in the taxonomy No definition available.
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| X | ||||||||||
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- Definition
Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase (decrease) during the reporting period in cash and cash equivalents. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Represents the charge against earnings during the period for commitment fees and debt issuance expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of plan compensation cost recognized during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The increase (decrease) during the reporting period in other assets used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets, other noncurrent assets, or a combination of other current and noncurrent assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in other liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current liabilities, other noncurrent liabilities, or a combination of other current and noncurrent liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase (decrease) during the reporting period in the amount due to fund pension and non-pension benefits to employees, retired and disabled former employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets,or income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The net cash inflow or outflow from financing activity for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The net cash inflow or outflow from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow associated with the acquisition of a controlling interest in another entity or an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The net cash inflow or outflow from a long-term borrowing supported by a written promise to pay an obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Operations and Significant Accounting Policies
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Jun. 30, 2011
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Operations and Significant Accounting Policies | NOTE 1. OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES Inventories. Inventories are stated at the lower of cost or market. Amounts removed from inventory are recorded on an average cost basis.
Supplemental Statement of Cash Flows Information.
Subsequent Events. The Company performed an evaluation of subsequent events for potential recognition and disclosure through the time of the financial statements issuance. New Accounting Standards. Fair Value. In May 2011, the FASB issued an accounting standards update on fair value measurement. This update requires disclosure of a sensitivity analysis for fair value measurements within Level 3 and the valuation processes used. This guidance is effective for the quarter ended March 31, 2012, and is not expected to have a material impact on our consolidated financial position, results of operations or cash flows. Statement of Comprehensive Income. In June 2011, the FASB issued an accounting standards update on the presentation of comprehensive income. This guidance will be effective for the quarter ended March 31, 2012 and will modify our presentation of other comprehensive income, moving it from the footnotes to the face of the financial statements in a single, continuous statement of comprehensive income. The components of net income and other comprehensive income are unchanged and EPS continues to be based on net income. |
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- Definition
The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Business Segments
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Jun. 30, 2011
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| Business Segments [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Business Segments | NOTE 2. BUSINESS SEGMENTS Regulated Operations includes our regulated utilities, Minnesota Power and SWL&P, as well as our investment in ATC, a Wisconsin-based utility that owns and maintains electric transmission assets in parts of Wisconsin, Michigan, Minnesota and Illinois. Investments and Other is comprised primarily of BNI Coal, our coal mining operations in North Dakota, and ALLETE Properties, our Florida real estate investment. This segment also includes a small amount of non-rate base generation, land available-for-sale in Minnesota and earnings on cash and short-term investments.
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- Details
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- Definition
The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Investments
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Jun. 30, 2011
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| Investments [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investments | NOTE 3. INVESTMENTS Investments. Our long-term investment portfolio includes the real estate assets of ALLETE Properties, debt and equity securities consisting primarily of securities held to fund employee benefits and land held-for-sale in Minnesota.
Land Held-for-sale. Land held-for-sale is recorded at the lower of cost or fair value as determined by the evaluation of individual land parcels. Land values are reviewed for impairment on a quarterly basis and no impairments were recorded for the quarter ended June 30, 2011 (none in 2010). Long-Term Finance Receivables. As of June 30, 2011, long-term finance receivables were $2.1 million net of allowance ($3.7 million net of allowance as of December 31, 2010). The decrease is primarily the result of the transfer of property back to ALLETE Properties by deed-in-lieu of foreclosure, in satisfaction of amounts previously owed under long-term financing receivables. Long-term finance receivables are collateralized by property sold, accrue interest at market-based rates and are net of an allowance for doubtful accounts.
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- Definition
Disclosure of long-term investments within our long-term investments portfolio. No definition available.
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Fair Value
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Jun. 30, 2011
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| Fair Value [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value | NOTE 4. FAIR VALUE Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated or generally unobservable. We primarily apply the market approach for recurring fair value measurements and endeavor to utilize the best available information. Accordingly, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. These inputs, which are used to measure fair value, are prioritized through the fair value hierarchy. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). Descriptions of the three levels of the fair value hierarchy are discussed in Note 8. Fair Value to the consolidated financial statements in our 2010 Form 10-K. The following tables set forth by level within the fair value hierarchy our assets and liabilities that were accounted for at fair value on a recurring basis as of June 30, 2011, and December 31, 2010. Each asset and liability is classified based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels.
On January 5, 2011, the remaining $6.7 million of ARS were redeemed at carrying value. The Company's policy is to recognize transfers in and transfers out as of the actual date of the event or of the change in circumstances that caused the transfer. For the six months ended June 30, 2011 and 2010, there were no transfers in or out of Levels 1, 2 or 3. Fair Value of Financial Instruments. With the exception of the items listed below, the estimated fair value of all financial instruments approximates the carrying amount. The fair value for the items listed below was based on quoted market prices for the same or similar instruments.
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- Definition
The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Regulatory Matters
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2011
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| Regulatory Matters [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Regulatory Matters | NOTE 5. REGULATORY MATTERS Electric Rates. Entities within our Regulated Operations segment file for periodic rate revisions with the MPUC, the FERC or the PSCW. 2010 Rate Case. On November 2, 2009, Minnesota Power filed an $81 million retail rate increase request to recover the costs of significant investments to ensure current and future system reliability, enhance environmental performance and bring new renewable energy to northeastern Minnesota. Interim rates were put into effect on January 1, 2010, and were originally estimated to increase revenues by $48.5 million in 2010. In April 2010, we adjusted our initial filing for events that had occurred since November 2009 - primarily increased sales to our industrial customers - resulting in a retail rate increase request of $72 million, a return on equity request of 11.25 percent and a capital structure consisting of 54.29 percent equity and 45.71 percent debt. On November 2, 2010, Minnesota Power received a written order from the MPUC approving a retail rate increase of $53.5 million, a 10.38 percent return on common equity and a 54.29 percent equity ratio, subject to reconsideration. On May 24, 2011, the MPUC issued an order authorizing Minnesota Power to implement final rates of $53.5 million, effective June 1, 2011. The May 24, 2011 order authorized Minnesota Power to collect a $3.2 million differential between interim rates and final rates for the period from November 2, 2010, through June 1, 2011, all of which was recorded in the second quarter of 2011. Under the terms of a stipulation and settlement agreement approved by the MPUC as part of this rate case, Minnesota Power agreed to forgo collection of $20.5 million in revenue receivable that it was entitled to under a prior rider for the Boswell Unit 3 environmental retrofit. The agreement required the Company to capitalize, as part of rate base, the $20.5 million to property, plant and equipment representing AFUDC. In conjunction with the settlement agreement, and upon receipt of the final rate order in February 2011, the Company reversed a $6.2 million deferred tax liability related to the revenue receivable Minnesota Power agreed to forgo. The $20.5 million revenue receivable was previously included in Regulatory Assets on the Company's consolidated balance sheet. On February 22, 2011, Minnesota Power timely filed an appeal of the MPUC's interim rate decision in the Company's 2010 rate case with the Minnesota Court of Appeals. The Company is appealing the MPUC's finding of exigent circumstances in the interim rate decision with the primary arguments that the MPUC exceeded its statutory authority, made its decision without the support of a body of record evidence and that the decision violated public policy. The Company desires to resolve whether the MPUC's finding of exigent circumstances was lawful for application in future rate cases. The briefing schedule is complete and oral argument is scheduled for September 21, 2011. If the appeal is successful, the Minnesota Court of Appeals would remand the case to the MPUC for further action consistent with its decision. The Company cannot predict the outcome of the matter at this time. FERC-Approved Wholesale Rates. Minnesota Power's non-affiliated municipal customers consist of 16 municipalities in Minnesota and 1 private utility in Wisconsin. SWL&P, a wholly-owned subsidiary of ALLETE, is also a private utility in Wisconsin and a customer of Minnesota Power. In 2008, Minnesota Power entered into formula-based rate contracts with these customers. In February 2011, Minnesota Power entered into a new formula-based contract with the City of Nashwauk, effective May 1, 2012, through April 30, 2022, and in June 2011, Minnesota Power entered into restated contracts, effective July 1, 2011, through June 30, 2019, with the remaining 15 Minnesota municipal customers. The rates included in these contracts are calculated using a cost-based formula methodology that is set each July using estimated costs and provides for a true-up calculation for actual costs. The contract terms include a termination clause requiring a three-year notice to terminate. Under the restated contracts, no termination notices may be given prior to June 30, 2016. 2010 Wisconsin Rate Increase. SWL&P's 2011 retail rates are based on a 2010 PSCW retail rate order, effective January 1, 2011, that allows for a 10.9 percent return on common equity. The new rates reflect a 2.4 percent average increase in retail utility rates for SWL&P customers (a 12.8 percent increase in water rates, a 2.5 percent increase in natural gas rates and a 0.7 percent increase in electric rates). On an annualized basis, the rate increase will generate approximately $2 million in additional revenue. The Patient Protection and Affordable Care Act of 2010 (PPACA). In March 2010, PPACA was signed into law. One of the provisions changed the tax treatment for retiree prescription drug expenses by eliminating the tax deduction for expenses that are reimbursed under Medicare Part D, beginning January 1, 2013. Based on this provision, we are subject to additional taxes in the future and were required to reverse previously recorded tax benefits in the first quarter of 2010. Consequently, the reversal of the previously recorded tax benefit resulted in a non-recurring charge to net income of $4.0 million in the first quarter of 2010. In October 2010, we submitted a filing with the MPUC requesting deferral of the retail portion of the tax charge taken in 2010 resulting from PPACA. On May 24, 2011, the MPUC approved our request for deferral until the next rate case and as a result we recorded an income tax benefit of $2.9 million in the second quarter of 2011, and a related regulatory asset of $5.0 million. (See also Note 9. Income Tax Expense.) Regulatory Assets and Liabilities. Our regulated utility operations are subject to the accounting guidance for Regulated Operations. We capitalize incurred costs as regulatory assets, which are probable of recovery in future utility rates. Regulatory liabilities represent amounts expected to be credited to customers in rates. No regulatory assets or liabilities are currently earning a return.
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Investment in ATC
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| Equity Investments | NOTE 6. INVESTMENT IN ATC Our wholly-owned subsidiary, Rainy River Energy, owns approximately 8 percent of ATC, a Wisconsin-based utility that owns and maintains electric transmission assets in parts of Wisconsin, Michigan, Minnesota and Illinois. ATC rates are FERC approved and are based on a 12.2 percent return on common equity dedicated to utility plant. We account for our investment in ATC under the equity method of accounting. On July 29, 2011, we invested an additional $0.6 million in ATC for a total investment of $2.0 million in 2011.
ATC's summarized financial data for the quarter and six months ended June 30, 2011 and 2010, is as follows:
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The entire disclosure for equity investment, or group of investments, for which combined disclosure is appropriate, including: (a) the name of each investee and percentage of ownership of common stock, (b) accounting policies for investments in common stock, (c) difference between the amount at which the investment is carried and the amount of underlying equity in net assets and the accounting treatment of the difference, (d) the total fair value of each identified investment for which a market value is available, (e) summarized information as to assets, liabilities, and results of operations of the investees (for investments in unconsolidated subsidiaries, common stock of joint ventures, or other investments using the equity method), and (f) material effects of possible conversions, exercises, or contingent issuances of the investee. Other disclosures include (a) the names of any investee in which the investor owns 20 percent or more of the voting stock and investment is not accounted for using the equity method, and the reasons why not, and (b) the names of any investee in which the investor owns less than 20 percent of the voting stock and the investment is accounted for using the equity method, and the reasons why it is. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| Short-Term and Long-Term Debt | NOTE 7. SHORT-TERM AND LONG-TERM DEBT Short-Term Debt. As of June 30, 2011, total short-term debt outstanding was $15.4 million ($14.4 million as of December 31, 2010) and consisted of long-term debt due within one year and notes payable. On May 25, 2011, BNI Coal amended its Promissory Note and Supplement (Line of Credit) with CoBANK, ACB. The Line of Credit was increased from $3.0 million to $10.0 million and is being used for general corporate purposes. As of June 30, 2011, $2.5 million was drawn on the Line of Credit. Long-Term Debt. As of June 30, 2011, total long-term debt outstanding was $770.7 million ($771.6 million as of December 31, 2010). On May 25, 2011, we entered into a new $250 million Credit Agreement (Agreement) with JPMorgan Chase Bank, N.A., as Administrative Agent, and several other lenders that are parties thereto. The Agreement was effective July 1, 2011, and replaced our previous $150 million credit facility. The Agreement is unsecured and has a maturity date of June 30, 2015, which may be extended for one year. Such extension is subject to bank approvals. Advances from the Agreement may be used for general corporate purposes, to provide liquidity in support of ALLETE's commercial paper program and to issue up to $40 million in letters of credit. Financial Covenants. Our long-term debt arrangements contain customary covenants. In addition, our lines of credit and letters of credit supporting certain long-term debt arrangements contain financial covenants. Our compliance with financial covenants is not dependent on debt ratings. The most restrictive covenant requires ALLETE to maintain a ratio of Indebtedness to Total Capitalization (as the amounts are calculated in accordance with the respective long-term debt arrangements) of less than or equal to 0.65 to 1.00 measured quarterly. As of June 30, 2011, our ratio was approximately 0.42 to 1.00. Failure to meet this covenant would give rise to an event of default if not cured after notice from a lender, in which event ALLETE may need to pursue alternative sources of funding. Some of ALLETE's debt arrangements contain "cross-default" provisions that would result in an event of default if there is a failure under other financing arrangements to meet payment terms or to observe other covenants that would result in an acceleration of payments due. As of June 30, 2011, ALLETE was in compliance with its financial covenants. |
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The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| Other Income (Expense) | NOTE 8. OTHER INCOME (EXPENSE)
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The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| Income Tax Expense | NOTE 9. INCOME TAX EXPENSE
For the six months ended June 30, 2011, the effective tax rate was 18.2 percent (41.0 percent for the six months ended June 30, 2010). The effective tax rate for the six months ended June 30, 2011, was lowered by 4.4 percent due to the non-recurring income tax benefit related to the MPUC approval of our request to defer the retail portion of the tax charge taken in 2010 resulting from PPACA and by 9.4 percent due to the non-recurring reversal of the deferred tax liability related to a revenue receivable that Minnesota Power agreed to forgo as part of a stipulation and settlement agreement in its 2010 rate case. The effective tax rate deviated from the statutory rate of approximately 41 percent primarily due to non-recurring items discussed above, deductions for AFUDC-Equity, investment tax credits, renewable tax credits and depletion. Uncertain Tax Positions. As of June 30, 2011, we had gross unrecognized tax benefits of $11.3 million. Of this total, $0.6 million represents the amount of unrecognized tax benefits that, if recognized, would favorably impact the effective income tax rate. We expect that the total amount of unrecognized tax benefits as of June 30, 2011, will change by an immaterial amount in the next 12 months. |
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The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| Comprehensive Income | NOTE 10. COMPREHENSIVE INCOME The components of total comprehensive income were as follows:
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| Earnings Per Share and Common Stock | NOTE 11. EARNINGS PER SHARE AND COMMON STOCK The difference between basic and diluted earnings per share, if any, arises from outstanding stock options and performance share awards granted under our Executive and Director Long-Term Incentive Compensation Plans. For the quarter and six months ended June 30, 2011 and 2010, 0.3 million and 0.6 million, respectively, options to purchase shares of common stock were excluded from the computation of diluted earnings per share because the option exercise prices were greater than the average market prices; therefore, their effect would have been anti-dilutive.
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| Pension and Other Postretirement Benefit Plans | NOTE 12. PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS
Employer Contributions. For the six months ended June 30, 2011, no contributions were made to our defined benefit pension plan (no contributions were made for the six months ended June 30, 2010). For the six months ended June 30, 2011, $10.9 million was contributed to our other postretirement benefit plan ($2.6 million for the six months ended June 30, 2010). On July 15, 2011, $0.2 million was contributed to our defined benefit pension plan. We expect to make approximately $2 million in contributions to our defined benefit pension plan and an additional $1 million to our other postretirement benefit plan in 2011. Accounting and disclosure requirements for the Medicare Prescription Drug, Improvement and Modernization Act of 2003 (Act) provides guidance for employers that sponsor postretirement health care plans that provide prescription drug benefits. We provide postretirement health benefits that include prescription drug benefits, which qualify us for the federal subsidy under the Act. For the six months ended June 30, 2011, we received $0.2 million in prescription drug reimbursements. |
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| Commitments, Guarantees and Contingencies | NOTE 13. COMMITMENTS, GUARANTEES AND CONTINGENCIES Power Purchase Agreements. Our long-term PPAs have been evaluated under the accounting guidance for variable interest entities. We have determined that either we have no variable interest in the PPA or where we do have variable interests, we are not the primary beneficiary; therefore, consolidation is not required. These conclusions are based on the fact that we do not have both control over activities that are most significant to the entity and an obligation to absorb losses or receive benefits from the entity's performance. Our financial exposure relating to these PPAs is limited to our fixed capacity and energy payments. Square Butte PPA. Minnesota Power has a PPA with Square Butte that extends through 2026 (Agreement). It provides a long-term supply of energy to customers in our electric service territory and enables Minnesota Power to meet power pool reserve requirements. Square Butte, a North Dakota cooperative corporation, owns a 455 MW coal-fired generating unit (Unit) near Center, North Dakota. The Unit is adjacent to a generating unit owned by Minnkota Power, a North Dakota cooperative corporation whose Class A members are also members of Square Butte. Minnkota Power serves as the operator of the Unit and also purchases power from Square Butte. Minnesota Power is obligated to pay its pro rata share of Square Butte's costs based on Minnesota Power's entitlement to Unit output. Our output entitlement under the Agreement is 50 percent for the remainder of the contract, subject to the provisions of the Minnkota Power sales agreement described below. Minnesota Power's payment obligation will be suspended if Square Butte fails to deliver any power, whether produced or purchased, for a period of one year. Square Butte's costs consist primarily of debt service, operating and maintenance, depreciation and fuel expenses. We expect debt service, operating and maintenance and depreciation expenses for Square Butte to increase in 2011 due to environmental compliance obligations. As of June 30, 2011, Square Butte had total debt outstanding of $424.1 million. Annual debt service for Square Butte is expected to be approximately $39 million in each of the five years, 2011 through 2015, of which Minnesota Power's obligation is 50 percent. Fuel expenses are recoverable through our fuel adjustment clause and include the cost of coal purchased from BNI Coal, our subsidiary, under a long-term contract. Minnkota Power Sales Agreement. In conjunction with the purchase of the existing 250 kV DC transmission line from Square Butte in December 2009, Minnesota Power entered into a power sales agreement with Minnkota Power. Under the power sales agreement, Minnesota Power will sell a portion of its output from Square Butte to Minnkota Power, resulting in Minnkota Power's net entitlement increasing and Minnesota Power's net entitlement decreasing until Minnesota Power's share is eliminated at the end of 2025. No power will be sold under this agreement until Minnkota Power has placed in service a new AC transmission line, which is anticipated to occur in 2013. This new AC transmission line will allow Minnkota Power to transmit its entitlement from Square Butte directly to its customers, which, in turn, will enable Minnesota Power to transmit new wind generation on the DC transmission line. Wind PPAs. In 2006 and 2007, Minnesota Power entered into two long-term wind PPAs with an affiliate of NextEra Energy, Inc., to purchase the output from Oliver Wind I (50 MW) and Oliver Wind II (48 MW) - wind facilities located near Center, North Dakota. Each agreement is for 25 years and provides for the purchase of all output from the facilities at fixed prices. There are no fixed capacity charges and we only pay for energy as it is delivered to us. Hydro PPAs. Minnesota Power has a PPA with Manitoba Hydro that expires in April 2015. Under this agreement Minnesota Power is purchasing 50 MW of capacity and the energy associated with that capacity. Both the capacity price and the energy price are adjusted annually by the change in a governmental inflationary index. Minnesota Power has a separate PPA with Manitoba Hydro to purchase surplus energy beginning in May 2011 through April 2022. This energy-only transaction primarily consists of surplus hydro energy on Manitoba Hydro's system that is delivered to Minnesota Power on a non-firm basis. The pricing is based on forward market prices. Under this agreement Minnesota Power will be purchasing at least one million MWh of energy over the contract term. On March 11, 2011, the MPUC approved this PPA with Manitoba Hydro. North Dakota Wind Development. In December 2009, we purchased an existing 250 kV DC transmission line from Square Butte. The 465-mile transmission line runs from Center, North Dakota, to Duluth, Minnesota. We use this line to transport increasing amounts of wind energy from North Dakota, while gradually phasing out coal-based electricity currently being delivered to our system over this transmission line from Square Butte's coal-fired generating unit. Bison 1 is a two phase, 82 MW wind project in North Dakota. All permitting has been received and the first phase was completed in 2010. Phase one included the construction of a 22-mile, 230 kV transmission line and the installation of sixteen 2.3-MW wind turbines. Phase two is expected to be completed in late 2011 and consists of the installation of fifteen 3.0-MW wind turbines. Bison 1 is expected to have a total capital cost of approximately $177 million, of which $137.4 million was spent through June 30, 2011. In 2009, the MPUC approved Minnesota Power's petition seeking current cost recovery for investments and expenditures related to Bison 1 and in July 2010, the MPUC approved our petition establishing rates effective August 1, 2010. On March 31, 2011, Minnesota Power petitioned the MPUC to update the rates for additional investments and expenditures related to Bison 1. Bison 2 and Bison 3 are both 105 MW wind projects in North Dakota which, if approved by the MPUC, are expected to be completed by the end of 2012. Total project costs for Bison 2 and Bison 3 are estimated to be approximately $160 million each. Construction would begin upon the receipt of appropriate regulatory and permitting approvals. Requests for approval of Bison 2 and Bison 3 were filed with the MPUC on March 24, 2011, and June 21, 2011, respectively. Site permit applications were submitted to the NDPSC on April 6, 2011, and July 7, 2011, respectively. Approvals of the site permit applications are expected in the third quarter of 2011. We will file for current cost recovery for Bison 2 and Bison 3 with the MPUC once the projects and related permitting have been approved. Coal, Rail and Shipping Contracts. We have coal supply agreements and transportation agreements providing for the purchase and delivery of a significant portion of our coal requirements. These coal and transportation agreements, including option terms, expire in various years between late 2011 and 2015. Our minimum annual payment obligation is $31.8 million in 2011, $15.8 million in 2012 and $16.3 million in 2013. Our minimum annual payment obligations will increase when annual nominations are made for coal deliveries in future years. The delivered costs of fuel for Minnesota Power's generation are recoverable from Minnesota Power's utility customers through the fuel adjustment clause. Leasing Agreements. BNI Coal is obligated to make lease payments for a dragline totaling $2.8 million annually for the lease term which expires in 2027. BNI Coal has the option at the end of the lease term to renew the lease at fair market value, purchase the dragline at fair market value or surrender the dragline and pay a $3.0 million termination fee. We lease other properties and equipment under operating lease agreements with terms expiring through 2016. The aggregate amount of minimum lease payments for all operating leases is $8.1 million in 2011, $8.4 million in 2012, $8.5 million in 2013, $8.7 million in 2014, $8.4 million in 2015 and $44.7 million thereafter. Transmission. We are making investments in Upper Midwest transmission opportunities that strengthen or enhance the regional transmission grid. These investments include the CapX2020 initiative, investments in our transmission assets and our investment in ATC. Transmission Investments. We have an approved cost recovery rider in place for certain transmission expenditures and the continued use of our 2009 billing factor was approved by the MPUC on May 11, 2011. The billing factor allows us to charge our retail customers on a current basis for the costs of constructing certain transmission facilities plus a return on the capital invested. On June 29, 2011, we filed an updated billing factor that includes additional transmission projects and expenses, which we expect to be approved in late 2011. CapX2020. Minnesota Power is a participant in the CapX2020 initiative which represents an effort to ensure electric transmission and distribution reliability in Minnesota and the surrounding region for the future. CapX2020, which consists of electric cooperatives, municipals and investor-owned utilities, including Minnesota's largest transmission owners, has assessed the transmission system and projected growth in customer demand for electricity through 2020. Studies show that the region's transmission system will require major upgrades and expansion to accommodate increased electricity demand as well as support renewable energy expansion through 2020. Minnesota Power is currently participating in three CapX2020 projects: the Fargo to St. Cloud project, the Monticello to St. Cloud project, which together total a 238-mile, 345 kV line from Fargo to Monticello, and the 70-mile, 230 kV line between Bemidji and Minnesota Power's Boswell Energy Center near Grand Rapids, Minnesota. Based on projected costs of the three transmission lines and the percentage agreements among participating utilities, Minnesota Power plans to invest between $100 million and $125 million in the CapX2020 initiative through 2015, of which $17.5 million was spent through June 30, 2011. As future CapX2020 projects are identified, Minnesota Power may elect to participate on a project-by-project basis. In July 2010, the MPUC granted a route permit for the 28-mile, 345 kV line between Monticello and St. Cloud. Construction of the project is expected to be completed in late 2011. On June 10, 2011, the MPUC approved the route permit for the Minnesota portion of the St. Cloud to Fargo project. The North Dakota permitting process is underway. The entire 238-mile, 345 kV line from St. Cloud to Fargo is expected to be in service by 2015. Construction for the Bemidji to Grand Rapids 230 kV line project commenced in January 2011. In November 2010, the MPUC approved a route permit for the Bemidji to Grand Rapids line. The Leech Lake Band of Ojibwe (LLBO) subsequently requested that the MPUC suspend or revoke the route permit and also served the CapX2020 utilities with a tribal court complaint asserting adjudicatory and regulatory authority over the project. The CapX2020 utilities filed a request for declaratory judgment in federal court that the project does not require the LLBO consent to the line crossing non-tribal land within the Leech Lake reservation. In response, the LLBO filed a motion to dismiss at the federal court scheduled for hearing on September 16, 2011. The MPUC has taken no action in the matter in light of ongoing litigation in federal and tribal court. On June 22, 2011, the Federal Judge issued a preliminary injunction directing the LLBO to cease and desist its claims of tribal court jurisdiction or from taking other actions to interfere with regulatory review, approval or project construction. The CapX2020 utilities are vigorously defending against the LLBO actions. Environmental Matters Our businesses are subject to regulation of environmental matters by various federal, state and local authorities. Currently, a number of regulatory changes to the Clean Air Act, the Clean Water Act and various waste management requirements are under consideration by both Congress and the EPA. Minnesota Power's fossil fuel facilities will likely be subject to regulation under these proposals. Our intention is to reduce our exposure to these requirements by reshaping our generation portfolio over time to reduce our reliance on coal. We consider our businesses to be in substantial compliance with currently applicable environmental regulations and believe all necessary permits to conduct such operations have been obtained. Due to future restrictive environmental requirements through legislation and/or rulemaking, we anticipate that potential expenditures for environmental matters will be material and will require significant capital investments. We review environmental matters on a quarterly basis. Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, based on current law and existing technologies. Accruals are adjusted as assessment and remediation efforts progress or as additional technical or legal information become available. Accruals for environmental liabilities are included in the consolidated balance sheet at undiscounted amounts and exclude claims for recoveries from insurance or other third parties. Costs related to environmental contamination treatment and cleanup are charged to expense unless recoverable in rates from customers. Air. The electric utility industry is heavily regulated both at the federal and state level to address air emissions. Minnesota Power's generating facilities mainly burn low-sulfur western sub-bituminous coal. Square Butte, located in North Dakota, burns lignite coal. All of Minnesota Power's generating facilities are equipped with pollution control equipment such as scrubbers, bag houses and low NOx technologies. At this time, these facilities are substantially compliant with applicable emission requirements. New Source Review. In August 2008, Minnesota Power received a Notice of Violation (NOV) from the EPA asserting violations of the New Source Review (NSR) requirements of the Clean Air Act at Boswell Units 1-4 and Laskin Unit 2. The NOV asserts that seven projects undertaken at these coal-fired plants between the years 1981 and 2000 should have been reviewed under the NSR requirements and that the Boswell Unit 4 Title V permit was violated. In April 2011, Minnesota Power received a NOV alleging that two projects undertaken at Rapids Energy Center in 2004 and 2005 should have been reviewed under the NSR requirements and that the Rapids Energy Center's Title V permit was violated. Minnesota Power believes the projects in both NOVs were in full compliance with the Clean Air Act, NSR requirements and applicable permits. We are engaged in discussions with the EPA regarding resolution of these matters, but we are unable to predict the outcome of these discussions. The resolution could result in civil penalties and the installation of control technology, some of which is already planned or completed for other regulatory requirements. Any costs of installing pollution control technology would likely be eligible for recovery in rates over time subject to MPUC and FERC approval in a rate proceeding. Since 2006, Minnesota Power has significantly reduced emissions at Laskin and Boswell and continues to reduce emissions at Boswell. Cross-State Air Pollution Rule (CSAPR). On July 6, 2011, the EPA finalized the CSAPR; however, it has not yet been published in the Federal Register. The CSAPR requires 27 states to significantly improve air quality by reducing power plant emissions that contribute to ozone and/or fine particle pollution in other states. This final rule, referred to as the Transport Rule during the proposal stage, replaces the EPA's 2005 Clean Air Interstate Rule (CAIR). Minnesota participation in the CAIR was stayed by EPA administrative action while the EPA completed review of air quality modeling issues in conjunction with development of a final, replacement rule. In their final determination, the EPA has listed Minnesota as a CSAPR-affected state based on new, 24-hour fine particulate NAAQS analysis. The CSAPR-related emission restrictions become effective for Minnesota utilities in 2012. Since 2006, we have made substantial investments in pollution control equipment at our Laskin, Taconite Harbor and Boswell generating units which have significantly reduced emissions. Ongoing analysis of the CSAPR preliminarily indicates our recent emission reductions may satisfy Minnesota Power's SO2 and NOx emission compliance obligations with respect to the CSAPR requirements. We are unable to predict any additional CSAPR compliance costs we might incur at this time. Minnesota Regional Haze. The federal regional haze rule requires states to submit state implementation plans (SIPs) to the EPA to address regional haze visibility impairment in 156 federally-protected parks and wilderness areas. Under the regional haze rule, certain large stationary sources, put in place between 1962 and 1977, with emissions contributing to visibility impairment are required to install emission controls, known as Best Available Retrofit Technology (BART). We have two steam units, Boswell Unit 3 and Taconite Harbor Unit 3, which are subject to BART requirements. Pursuant to the regional haze rule, Minnesota was required to develop its SIP by December 2007. As a mechanism for demonstrating progress towards meeting the long-term regional haze goal, in April 2007, the MPCA advanced a draft conceptual SIP which relied on the implementation of CAIR. However, a formal SIP was not filed at that time due to the United States Court of Appeals for the District of Columbia Circuit's remand of CAIR. Subsequently, the MPCA requested that companies with BART eligible units complete and submit a BART emissions control retrofit study, which was completed for Taconite Harbor Unit 3 in November 2008. The retrofit work completed in 2009 at Boswell Unit 3 meets the BART requirements for that unit. In December 2009, the MPCA approved the Minnesota SIP for submittal to the EPA for its review and approval. The Minnesota SIP incorporates information from the BART emissions control retrofit studies that were completed as requested by the MPCA. A decision by the EPA is pending on whether to approve the Minnesota SIP. If approved, Minnesota Power will have up to five years to bring Taconite Harbor Unit 3 into compliance. It is uncertain what controls will ultimately be required at Taconite Harbor Unit 3 in connection with the regional haze rule. EPA National Emission Standards for Hazardous Air Pollutants (NESHAPs) for Coal- and Oil-fired Electric Utility Steam Generating Units (EUSGU). Under Section 112 of the Clean Air Act, the EPA is required to set emission standards for hazardous air pollutants for certain source categories. The EPA released their proposed EUSGU NESHAPs rule on March 16, 2011. As part of the NESHAPs rulemaking, the EPA will develop Maximum Achievable Control Technology standards for utilities. The final rule is expected to be issued in November 2011. Costs for complying with potential future mercury and other hazardous air pollutant regulations under the Clean Air Act cannot be estimated at this time. EPA National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial and Institutional Boilers and Process Heaters. In March 2011, the final rules were published in the Federal Register. The rule was stayed by the EPA on May 16, 2011, to allow the EPA time to consider additional comments received. The EPA currently plans to re-propose the rule, with a final rule expected in April 2012. Major sources have three years to achieve compliance with the final rules. These rules may result in additional control measures being required at Rapids Energy Center and Hibbard. Costs for complying with these proposed rules cannot be estimated at this time. Minnesota Mercury Emission Reduction Act. Under Minnesota law, a mercury emissions reduction plan for Boswell Unit 4 is required to be submitted by July 1, 2015, with implementation no later than December 31, 2018. The statute also calls for an evaluation of a mercury control alternative which provides for environmental and public health benefits without imposing excessive costs on the utility's customers. Costs for the Boswell Unit 4 emission reduction plan cannot be estimated at this time. Until Minnesota Power files its mercury emission reduction plan for Boswell 4, it must file an annual report updating the MPUC and other stakeholders on the status of emission reduction planning for Boswell 4. The first such update was filed with the MPUC on June 30, 2011. Proposed and Finalized National Ambient Air Quality Standards (NAAQS). The EPA is required to review the NAAQS every five years. If the EPA determines that a state's air quality is not in compliance with a NAAQS, the state is required to adopt plans describing how they will reduce emissions to attain the NAAQS. These state plans often include more stringent air emission limitations on sources of air pollutants. Four NAAQS have either recently been revised or are currently proposed for revision, as described below. Ozone NAAQS. The EPA is proposing to more stringently control emissions that result in ground level ozone. In January 2010, the EPA proposed to reduce the eight-hour ozone standard and to adopt a secondary standard for the protection of sensitive vegetation from ozone-related damage. The EPA was scheduled to decide upon the standard at the end of July 2011, however the decision has been delayed. As proposed, states have until early 2014 to submit plans outlining how they will meet the standards. Particulate Matter NAAQS. The EPA finalized the NAAQS Particulate Matter standards in September 2006. The EPA established a more stringent 24-hour average fine particulate (PM2.5) standard and kept the annual average fine particulate matter standard and the 24-hour coarse particulate matter standard unchanged. The District of Columbia Circuit Court of Appeals has remanded the PM2.5 standard to the EPA, requiring consideration of lower annual average standard values. The EPA plans to finalize the new PM2.5 standards in 2011 and state attainment status determination will likely not occur prior to 2013. As early as late 2014, affected sources would have to take additional control measures if modeling demonstrates non-compliance at the property boundary. The EPA has indicated that ambient air quality monitoring for 2008 through 2010 will be used as a basis for states to characterize their attainment status. SO2 and NO2 NAAQS. During 2010, the EPA finalized a new one-hour NAAQS for SO2 and NO2. Monitoring data indicates that Minnesota will likely be in compliance with these new standards; however, the SO2 NAAQS also requires the EPA to evaluate modeling data to determine attainment. MPCA intends to have this modeling effort completed by the end of 2011, using facility data Minnesota Power provides for all of our steam generating facilities. It is unclear what the outcome of this evaluation will be. These NAAQS could also result in more stringent emission limits on our steam generating facilities, possibly resulting in additional control measures on some of our units. We are unable to predict the nature or timing of any additional NAAQS regulation or compliance costs we might incur at this time. Climate Change. Minnesota Power is addressing climate change by taking the following steps that also ensure reliable and environmentally compliant generation resources to meet our customers' requirements:
The scientific community generally accepts that emissions of GHGs are linked to global climate change. Climate change creates physical and financial risk. These physical risks could include, but are not limited to, increased or decreased precipitation and water levels in lakes and rivers; increased temperatures; and the intensity and frequency of extreme weather events. These all have the potential to affect the Company's business and operations. EPA Regulation of GHG Emissions. In May 2010, the EPA issued the final Prevention of Significant Deterioration (PSD) and Title V Greenhouse Gas Tailoring Rule (Tailoring Rule). The PSD/Tailoring Rule establishes permitting thresholds required to address GHG emissions for new facilities, at existing facilities that undergo major modifications and at other facilities characterized as major sources under the Clean Air Act's Title V program. For our existing facilities, the rule does not require amending our existing Title V Operating Permits to include GHG requirements. Implementation of the requirement to add GHG provisions to permits will be completed at the state level in Minnesota by the MPCA when the Title V permits are renewed. However, installation of new units or modification of existing units resulting in a significant increase in GHG emissions will require obtaining PSD permits and amending our operating permits to demonstrate that Best Available Control Technology (BACT) is being used at the facility to control GHG emissions. The EPA has defined significant emissions increase for existing sources as a GHG increase of 75,000 tons or more per year of total GHG on a CO2 equivalent basis. In late 2010, the EPA issued guidance to permitting authorities and affected sources to facilitate incorporation of the Tailoring Rule permitting requirements into the Title V and PSD permitting programs. The guidance stated that the project-specific top-down BACT determination process used for other pollutants will also be used to determine BACT for GHG emissions. Through sector-specific white papers, the EPA also provided examples and technical summaries of GHG emission control technologies and techniques the EPA considers available or likely to be available to sources. It is possible these control technologies could be determined to be BACT on a project-by-project basis. In the near term, one option appears to be energy efficiency maximization. Legal challenges to the EPA's regulation of GHG emissions, including the Tailoring Rule, have been filed by others and are awaiting judicial determination. Comments to the permitting guidance were also submitted by Minnesota Power and others and may be addressed by the EPA in the form of revised guidance documents. We cannot predict the nature or timing of any additional GHG legislation or regulation. Although we are unable to predict the compliance costs we might incur, the costs could have a material impact on our financial results. Water. The Clean Water Act requires NPDES permits to be obtained from the EPA (or, when delegated, from individual state pollution control agencies) for any wastewater discharged into navigable waters. We have obtained all necessary NPDES permits, including NPDES storm water permits for applicable facilities, to conduct our operations. We are in substantial compliance with these permits. Clean Water Act - Aquatic Organisms. On April 20, 2011, the EPA published in the Federal Register proposed regulations under section 316(b) of the Clean Water Act that set standards applicable to cooling water intake structures for the protection of aquatic organisms. The proposed regulations would require existing large power plants and manufacturing facilities that withdraw greater than 25 percent of water from adjacent water bodies for cooling purposes to limit the number of aquatic organisms that are killed when they are pinned against the facility's intake structure or that are drawn into the facility's cooling system. The section 316(b) standards would be implemented through NPDES permits issued to the covered facilities. The EPA has re-opened the comment period and is accepting public comments on the proposed rule through August 18, 2011. The EPA is obligated to finalize the rule by July 27, 2012. Minnesota Power is in the process of evaluating the potential impacts the proposed rule may have on its facilities. We are unable to predict the compliance costs we might incur; however, the costs could have a material impact on our financial results. Solid and Hazardous Waste. The Resource Conservation and Recovery Act of 1976 regulates the management and disposal of solid and hazardous wastes. We are required to notify the EPA of hazardous waste activity and, consequently, routinely submit the necessary reports to the EPA. Coal Ash Management Facilities. Minnesota Power generates coal ash at all five of its steam electric generating facilities. Two facilities store ash in onsite impoundments (ash ponds) with engineered liners and containment dikes. Another facility stores dry ash in a landfill with an engineered liner and leachate collection system. Two facilities generate a combined wood and coal ash that is either land applied as an approved beneficial use or trucked to state permitted landfills. In June 2010, the EPA proposed regulations for coal combustion residuals generated by the electric utility sector. The proposal sought comments on three general regulatory schemes for coal ash. Comments on the proposed rule were due in November 2010. It is estimated that the final rule will be published in late 2012 or early 2013. We are unable to predict the compliance costs we might incur; however, the costs could have a material impact on our financial results. Manufactured Gas Plant Site. We are reviewing and addressing environmental conditions at a former manufactured gas plant site in the City of Superior, Wisconsin, and formerly operated by SWL&P. We have been working with the WDNR to determine the extent of contamination and the remediation of contaminated locations. As of June 30, 2011, we have a $0.5 million liability for this site and a corresponding regulatory asset as we expect recovery of remediation costs to be allowed by the PSCW. Other Matters BNI Coal. As of June 30, 2011, BNI Coal had surety bonds outstanding of $29.7 million related to the reclamation liability for closing costs associated with its mine and mine facilities which meet the requirements for BNI Coal's total reclamation liability. BNI Coal does not believe it is likely that any of these outstanding bonds will be drawn upon. ALLETE Properties. As of June 30, 2011, ALLETE Properties, through its subsidiaries, had surety bonds outstanding of $10.2 million primarily related to performance and maintenance obligations to governmental entities to construct improvements in the Company's various projects. The cost of the remaining work to be completed on these improvements is estimated to be approximately $8.0 million and ALLETE Properties does not believe it is likely that any of these outstanding bonds will be drawn upon. Community Development District Obligations. In March 2005, the Town Center District issued $26.4 million of tax-exempt, 6 percent capital improvement revenue bonds and in May 2006, the Palm Coast Park District issued $31.8 million of tax-exempt, 5.7 percent special assessment bonds. The capital improvement revenue bonds and the special assessment bonds are payable over 31 years (by May 1, 2036 and 2037, respectively) and secured by special assessments on the benefitted land. The bond proceeds were used to pay for the construction of a portion of the major infrastructure improvements in each district and to mitigate traffic and environmental impacts. The assessments were billed to the landowners beginning in November 2006 for Town Center and November 2007 for Palm Coast Park. To the extent that we still own land at the time of the assessment, we will incur the cost of our portion of these assessments, based upon our ownership of benefited property. At June 30, 2011, we owned 73 percent of the assessable land in the Town Center District (69 percent at December 31, 2010) and 93 percent of the assessable land in the Palm Coast Park District (93 percent at December 31, 2010). At these ownership levels, our annual assessments are approximately $1.5 million for Town Center and $2.2 million for Palm Coast Park. As we sell property, the obligation to pay special assessments will pass to the new landowners. Under current accounting rules, these bonds are not reflected as debt on our consolidated balance sheet. Legal Proceedings. In January 2011, the Company was named as a defendant in a lawsuit in the Sixth Judicial District for the State of Minnesota by one of our customer's, United Taconite, LLC, property and business interruption insurers. In October 2006, United Taconite experienced a fire as a result of the failure of certain electrical protective equipment. The equipment at issue in the incident was not owned, designed or installed by Minnesota Power, but Minnesota Power had provided testing and calibration services related to the equipment. The lawsuit alleges approximately $20 million in damages related to the fire. The Company believes that it has strong defenses to the lawsuit and intends to vigorously assert such defenses. An expense related to any damages that may result from the lawsuit has not been recorded as of June 30, 2011, because a potential loss is not currently probable or reasonably estimable; however, the Company believes it has adequate insurance coverage for any potential loss. Other. We are involved in litigation arising in the normal course of business. Also in the normal course of business, we are involved in tax, regulatory and other governmental audits, inspections, investigations and other proceedings that involve state and federal taxes, safety, compliance with regulations, rate base and cost of service issues, among other things. While the resolution of such matters could have a material affect on earnings and cash flows in the year of resolution, none of these matters are expected to materially change our present liquidity position or have a material adverse affect on our financial condition. |
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This element represents the disclosure related to assets and liabilities by class, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition (for example, impaired assets). The disclosures that may be required or desired include: (a) the fair value measurements recorded during the period and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The entire disclosure for detailed information about regulatory assets and liabilities, including current and noncurrent assets created when regulatory agencies permit the deferral of costs to the balance sheet that would otherwise be required to appear on the company's income statement and would be charged against current expenses or revenues, as well as current and noncurrent liabilities created when regulatory agencies permit. No definition available.
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Jun. 30, 2011
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| Equity Investments [Abstract] | |||||||||||||||
| Schedule of Equity Method Investments |
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of equity method investments in common stock. The disclosure may include: (a) the name of each investee or group of investments for which combined disclosure is appropriate, (2) the percentage ownership of common stock, (3) the difference, if any, between the carrying amount of an investment and the value of the underlying equity in the net assets and the accounting treatment of difference, if any, and (4) the aggregate value of each identified investment based on its quoted market price, if available. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Other Income (Expense) (Tables)
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6 Months Ended | |||||||||||||||||||||||||||||||||||
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Jun. 30, 2011
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| Other Income (Expense) [Abstract] | ||||||||||||||||||||||||||||||||||||
| Other Income (Expense) |
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. No definition available.
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Income Tax Expense (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2011
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| Income Tax Expense [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Tax Expense |
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Comprehensive Income (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2011
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| Comprehensive Income (Loss) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive Income (Loss) |
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Earnings Per Share and Common Stock (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2011
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| Earnings Per Share and Common Stock [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share and Common Stock |
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Pension and Other Postretirement Benefit Plans (Tables)
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6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2011
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| Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Components of Net Periodic Benefit Expense |
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Operations and Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Dec. 31, 2010
|
|
| Inventories | |||||
| Fuel | $ 23.5 | $ 23.5 | $ 22.9 | ||
| Materials and Supplies | 37.8 | 37.8 | 37.1 | ||
| Total Inventories | 61.3 | 61.3 | 60.0 | ||
| Prepayments and Other Current Assets | |||||
| Deferred Fuel Adjustment Clause | 15.0 | 15.0 | 20.6 | ||
| Other | 5.6 | 5.6 | 8.0 | ||
| Total Prepayments and Other Current Assets | 20.6 | 20.6 | 28.6 | ||
| Other Non-Current Liabilities | |||||
| Asset Retirement Obligation | 52.0 | 52.0 | 50.3 | ||
| Other | 48.9 | 48.9 | 43.1 | ||
| Total Other Non-Current Liabilities | 100.9 | 100.9 | 93.4 | ||
| Cash Paid During the Period for | |||||
| Interest - Net of Amounts Capitalized | 21.9 | 16.3 | |||
| Income Taxes | 0.4 | 1.5 | |||
| Noncash Investing and Financing Activities | |||||
| Increase (Decrease) in Accounts Payable for Capital Additions to Property, Plant and Equipment | (13.2) | 4.4 | (13.2) | 4.4 | |
| AFUDC - Equity | $ 0.5 | $ 0.9 | $ 1.1 | $ 2.1 | |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
To reflect the noncash decrease in accounts payable for capital additions to property, plant and equipment No definition available.
|
| X | ||||||||||
|
- Definition
Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
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- Details
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| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of capitalized fuel costs of a regulated entity that are expected to be recoverable through rate adjustments within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of coal, which is a combustible rock or minerals which are extracted from the ground and used as fuel. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the capitalized cost of equity (based on assumed rate of return) and / or borrowed funds (based on interest rate) used to finance construction of regulated assets, which is expected to be recovered through rate adjustments. As a result of this capitalization, net income is increased. This element pertains to certain regulated industries, such as public utilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
The amount of cash paid for interest during the period net of cash paid for interest that is capitalized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The noncurrent portion (due beyond one year or one operating cycle) of other accrued expenses (expenses incurred at the end of the reporting period but not yet paid) not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The total of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer, and the aggregate carrying amount of current assets, as of the balance sheet date, not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Cost of electricity sold during the reporting period, operations of which is regulated by a federal or state agency. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of net Income or Loss attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
|
- Definition
The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Current year acquisitions of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. No definition available.
|
| X | ||||||||||
|
- Definition
Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total amount of operating revenues recognized during the period. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Discloses the total amount of all operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Discloses the amount of operating expense for the period related to depreciation and amortization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Discloses the amount of operating expense for the period for routine plant maintenance, repairs and operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Investments (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Jun. 30, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
| Investments [Abstract] | |||
| Land Held for sale | $ 87.3 | $ 86.0 | $ 74.9 |
| Additions during period: | |||
| Deeds to Collateralized Property | 1.6 | 9.9 | |
| Capitalized Improvements and Other | 0 | 1.2 | |
| Deductions during period: Cost of Real Estate Sold | (0.3) | 0 | |
| Long-Term Finance Receivables | 2.1 | 3.7 | |
| Other | 3.3 | 4.3 | |
| Total Real Estate Assets | 92.7 | 94.0 | |
| Available-for-sale Securities | 30.5 | 25.2 | |
| Other investments | 5.8 | 6.8 | |
| Total Investments | 129.0 | 126.0 | |
| Allowance for long-term receivables [Roll forward] | |||
| Additional Reserve | 0.1 | ||
| Allowance for long-term receivables | $ 0.9 | $ 0.8 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The current amount of expenditures for capital improvements of land held for resale during the period. No definition available.
|
| X | ||||||||||
|
- Definition
The reduction in the balance of land held-for-resale as a result of the selling off of some of the holdings. No definition available.
|
| X | ||||||||||
|
- Definition
Deeds as the result of an entity filing Chapter 11 bankruptcy recorded at fair value. No definition available.
|
| X | ||||||||||
|
- Definition
Other increase (decrease) during the period in the value of land held-for-resale. No definition available.
|
| X | ||||||||||
|
- Definition
Total real estate assets owned. No definition available.
|
| X | ||||||||||
|
- Definition
Reflects the sum for the period of the additions and reductions to the loan loss reserve, which when added to the opening balance of the reserve will agree to the ending balance in the reserve. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Land held for sale recorded at cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The allowance for loan and lease losses represents the reserve to cover probable credit losses related to specifically identified loans and leases, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for loan losses in connection with business combinations determined to be appropriate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Reflects the aggregate carrying amount of all categories of loans and leases held in portfolio, net of unearned income and the allowance for losses on loans and leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Other investments not otherwise specified in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Other long-term investments not otherwise specified in the taxonomy, not including investments in marketable securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Fair Value (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | 6 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2011
|
Dec. 31, 2010
|
Jun. 30, 2011
Estimate of Fair Value, Fair Value Disclosure [Member]
|
Dec. 31, 2010
Estimate of Fair Value, Fair Value Disclosure [Member]
|
Jun. 30, 2010
Derivative Financial Instruments, Assets [Member]
|
Dec. 31, 2009
Derivative Financial Instruments, Assets [Member]
|
Jun. 30, 2011
Debt Securities Issued by States of the United States[Member]
|
Dec. 31, 2010
Debt Securities Issued by States of the United States[Member]
|
Jun. 30, 2010
Debt Securities Issued by States of the United States[Member]
|
Dec. 31, 2009
Debt Securities Issued by States of the United States[Member]
|
Jun. 30, 2011
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
|
Dec. 31, 2010
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
|
Jun. 30, 2011
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 1 [Member]
|
Dec. 31, 2010
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 1 [Member]
|
Jun. 30, 2011
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 2 [Member]
|
Dec. 31, 2010
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 2 [Member]
|
Dec. 31, 2010
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 3 [Member]
|
|
| Assets: | |||||||||||||||||
| Equity Securities | $ 21.4 | $ 19.4 | $ 21.4 | $ 19.4 | |||||||||||||
| Available-for-sale Securities | |||||||||||||||||
| Corporate Debt Securities | 8.0 | 7.5 | 8.0 | 7.5 | |||||||||||||
| Debt Securities Issued by States of the United States (ARS) | 6.7 | 6.7 | |||||||||||||||
| Total Available-for-sale Securities | 8.0 | 14.2 | 8.0 | 7.5 | 6.7 | ||||||||||||
| Money Market Funds | 3.6 | 0.8 | 3.6 | 0.8 | |||||||||||||
| Total Fair Value of Assets | 33.0 | 34.4 | 25.0 | 20.2 | 8.0 | 7.5 | 6.7 | ||||||||||
| Liabilities: | |||||||||||||||||
| Deferred Compensation | 14.6 | 13.3 | 14.6 | 13.3 | |||||||||||||
| Total Fair Value of Liabilities | 14.6 | 13.3 | 14.6 | 13.3 | |||||||||||||
| Total Net Fair Value of Assets (Liabilities) | 18.4 | 21.1 | 25.0 | 20.2 | (6.6) | (5.8) | 6.7 | ||||||||||
| Activity in Level 3 | |||||||||||||||||
| Level 3 Assets Measured on a Recurring Basis | 0.7 | 6.7 | 6.7 | 6.7 | |||||||||||||
| Redeemed During the Period | (0.7) | (6.7) | |||||||||||||||
| Fair Value of Fianancial Instruments | |||||||||||||||||
| Long-Term Debt, Including Current Portion | $ 783.6 | $ 785.0 | $ 807.8 | $ 796.7 | |||||||||||||
| X | ||||||||||
|
- Definition
Total of corporate debt securities categorized as neither held-to-maturity nor trading. No definition available.
|
| X | ||||||||||
|
- Definition
Total of debt securities issued by states of the United States categorized as neither held-to-maturity nor trading. No definition available.
|
| X | ||||||||||
|
- Definition
This element represents the aggregate of the assets and liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. No definition available.
|
| X | ||||||||||
|
- Definition
Total of all securities categorized neither as held-to-maturity nor trading (available-for-sale). No definition available.
|
| X | ||||||||||
|
- Definition
This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. No definition available.
|
| X | ||||||||||
|
- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investments accounted for under the equity method of accounting as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Regulatory Matters (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2011
|
Jun. 30, 2010
|
May 24, 2011
|
Dec. 31, 2010
|
Nov. 02, 2010
|
Apr. 30, 2010
|
Dec. 31, 2009
|
Nov. 02, 2009
|
Jun. 30, 2011
Deferred Fuel Costs [Member]
|
Dec. 31, 2010
Deferred Fuel Costs [Member]
|
Jun. 30, 2011
Pension Costs [Member]
|
Dec. 31, 2010
Pension Costs [Member]
|
Jun. 30, 2011
Environmental Restoration Costs [Member]
|
Dec. 31, 2010
Environmental Restoration Costs [Member]
|
Jun. 30, 2011
Deferred Income Tax Charges [Member]
|
Dec. 31, 2010
Deferred Income Tax Charges [Member]
|
Jun. 30, 2011
Asset Retirement Obligation Costs [Member]
|
Dec. 31, 2010
Asset Retirement Obligation Costs [Member]
|
Jun. 30, 2011
Rate Case Expenses [Member]
|
Dec. 31, 2010
Rate Case Expenses [Member]
|
Jun. 30, 2011
Loss on Reacquired Debt [Member]
|
Dec. 31, 2010
Loss on Reacquired Debt [Member]
|
Jun. 30, 2011
Other Regulatory Assets [Member]
|
Dec. 31, 2010
Other Regulatory Assets [Member]
|
Jun. 30, 2011
Medicare Part D [Member]
|
Dec. 31, 2010
Medicare Part D [Member]
|
Jun. 30, 2011
Plant Removal Obligations [Member]
|
Dec. 31, 2010
Plant Removal Obligations [Member]
|
Jun. 30, 2011
Other Regulatory Liabilities [Member]
|
Dec. 31, 2010
Other Regulatory Liabilities [Member]
|
Dec. 31, 2011
Retail Utility Rates [Member]
|
Dec. 31, 2011
Water Rates [Member]
|
Dec. 31, 2011
Natural Gas Rates [Member]
|
Dec. 31, 2011
Electric Rates [Member]
|
||||||
| Regulatory Matters [Abstract] | ||||||||||||||||||||||||||||||||||||||||
| Amount of retail rate increase request to recover the investment costs | $ 81.0 | |||||||||||||||||||||||||||||||||||||||
| Amount of estimated increase in revenues due to interim rates | 48.5 | |||||||||||||||||||||||||||||||||||||||
| Amount of amended retail rate increase | 72.0 | |||||||||||||||||||||||||||||||||||||||
| Requested percentage return on equity | 11.25% | |||||||||||||||||||||||||||||||||||||||
| Requested percentage of capital structure related to equity | 54.29% | |||||||||||||||||||||||||||||||||||||||
| Requested percentage of capital structure related to debt | 45.71% | |||||||||||||||||||||||||||||||||||||||
| Amount of approved retail rate increase | 53.5 | 53.5 | ||||||||||||||||||||||||||||||||||||||
| Percentage return on common equity approved | 10.38% | |||||||||||||||||||||||||||||||||||||||
| Percentage of approved equity ratio | 54.29% | |||||||||||||||||||||||||||||||||||||||
| Amount of rate differential authorized for collection | 3.2 | |||||||||||||||||||||||||||||||||||||||
| Amount capitalized as part of the rate base as part of agreement for new retail rate | 20.5 | |||||||||||||||||||||||||||||||||||||||
| Amount of deferred tax liability reversed as part of agreement for retail rate increase | 6.2 | |||||||||||||||||||||||||||||||||||||||
| Number of municipalities included in non-affiliated municipal customers (in number of municipalities) | 16 | 16 | ||||||||||||||||||||||||||||||||||||||
| Number of private utilities included in non-affiliated municipal customers (in number of private utilities) | 1 | 1 | ||||||||||||||||||||||||||||||||||||||
| Start date of formula-based contract with City of Nashwauk | May 01, 2012 | May 01, 2012 | ||||||||||||||||||||||||||||||||||||||
| End date of formula-based contract with City of Nashwauk | Apr. 30, 2022 | Apr. 30, 2022 | ||||||||||||||||||||||||||||||||||||||
| Start date of formula-based contract with other municipal customers | Jul. 01, 2011 | Jul. 01, 2011 | ||||||||||||||||||||||||||||||||||||||
| End date of formula-based contract with other municipal customers | Jun. 30, 2019 | Jun. 30, 2019 | ||||||||||||||||||||||||||||||||||||||
| Length of termination notice required for non-affiliated municipal customers (in years) | 3Y | |||||||||||||||||||||||||||||||||||||||
| Rates Subject To Change [Line Items] | ||||||||||||||||||||||||||||||||||||||||
| Percentage of average rate increase (in hundredths) | 2.40% | 12.80% | 2.50% | 0.70% | ||||||||||||||||||||||||||||||||||||
| Percentage increase in rates (in hundredths) | 10.90% | |||||||||||||||||||||||||||||||||||||||
| Amount of estimated additional revenue that will be generated under rate increase | 2.0 | |||||||||||||||||||||||||||||||||||||||
| Amount of income tax benefit (expense) related to Medicare Part D | 2.9 | 2.9 | (4.0) | |||||||||||||||||||||||||||||||||||||
| Regulatory asset related to Medicare Part D | 5.0 | |||||||||||||||||||||||||||||||||||||||
| Regulatory Assets [Line Items] | ||||||||||||||||||||||||||||||||||||||||
| Current assets | 15.0 | [1] | 15.0 | [1] | 20.6 | [1] | 15.0 | 20.6 | ||||||||||||||||||||||||||||||||
| Non-current assets | 290.2 | 290.2 | 310.2 | 249.5 | 257.9 | 0 | 20.5 | 22.1 | 17.3 | 8.7 | 7.8 | 1.0 | 1.4 | 1.7 | 1.8 | 2.2 | 3.5 | 5.0 | 0 | |||||||||||||||||||||
| Total regulatory assets | 305.2 | 305.2 | 330.8 | |||||||||||||||||||||||||||||||||||||
| Regulatory Liabilities [Line Items] | ||||||||||||||||||||||||||||||||||||||||
| Non-Current liabilities | 43.4 | 43.4 | 43.6 | 22.2 | 23.4 | 16.4 | 16.9 | 4.8 | 3.3 | |||||||||||||||||||||||||||||||
| Total regulatory liabilities | $ 43.4 | $ 43.4 | $ 43.6 | |||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||
| X | ||||||||||
|
- Definition
The entity's adjusted requested amount of increase to existing electric rates, filed with the state regulatory commission. No definition available.
|
| X | ||||||||||
|
- Definition
Reclassification of revenue receivable to property, plant and equipment per stipulation and settlement agreement approved by the state regulators. No definition available.
|
| X | ||||||||||
|
- Definition
The estimated amount of additional revenue that will be generated under regulatory approved rate increase. No definition available.
|
| X | ||||||||||
|
- Definition
The differential between interim rates and final rates authorized for collection. No definition available.
|
| X | ||||||||||
|
- Definition
The allowed percentage of capital structure related to equity approved by the state regulators. No definition available.
|
| X | ||||||||||
|
- Definition
Rate of return on common equity approved in rate case by the state regulators. No definition available.
|
| X | ||||||||||
|
- Definition
The entity's approved amount of increase to existing electric rates by the state regulators. No definition available.
|
| X | ||||||||||
|
- Definition
End date of formula-based contract with City of Nashwauk. No definition available.
|
| X | ||||||||||
|
- Definition
End date of formula-based contract with other municipal customers. No definition available.
|
| X | ||||||||||
|
- Definition
The state regulator's approved interim electric rate increase (decrease). No definition available.
|
| X | ||||||||||
|
- Definition
The length of notice to terminate contract that must be given by customers. No definition available.
|
| X | ||||||||||
|
- Definition
The number of municipalities included in the non-affiliated municipal customer base with formula-based contracts. No definition available.
|
| X | ||||||||||
|
- Definition
The number of private utilities included in the non-affiliated municipal customer base with formula-based contracts. No definition available.
|
| X | ||||||||||
|
- Definition
The entity's original requested amount of increase to existing electric rates, filed with the state regulators. No definition available.
|
| X | ||||||||||
|
- Definition
Percentage increase (decrease) in rates for the period. No definition available.
|
| X | ||||||||||
|
- Definition
Average rate increase (decrease) during the period. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
No authoritative reference available. No definition available.
|
| X | ||||||||||
|
- Definition
The allowed percentage of capital structure related to equity requested by Minnesota Power . No definition available.
|
| X | ||||||||||
|
- Definition
The percentage of capital structure related to equity requested by the entity. No definition available.
|
| X | ||||||||||
|
- Definition
Rate of return on common equity requested by utility through a rate case proceeding with the state regulators. No definition available.
|
| X | ||||||||||
|
- Definition
Start date of formula-based contract with City of Nashwauk. No definition available.
|
| X | ||||||||||
|
- Definition
Start date of formula-based contract with other municipal customers. No definition available.
|
| X | ||||||||||
|
- Definition
The change during the period in the entity's deferred tax assets and liabilities attributable to continuing operations as determined by applying enacted tax laws other than federal, domestic, foreign, state or local. Items affecting deferred income taxes and required to be disclosed, but not included elsewhere, would also be designated as "Other"; for example, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity and adjustments to be beginning-of-year balance of a valuation allowance because of a change in circumstance that causes a change in judgment about the realizability of the related deferred tax asset in future periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Investment in ATC (Details) (USD $)
In Millions, unless otherwise specified |
0 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|---|
|
Jul. 29, 2011
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Equity Investments [Abstract] | |||||||
| Percent ownership of equity investment | 8.00% | 8.00% | |||||
| Approved percent return on common equity dedicated to utility plant | 12.20% | ||||||
| Anticipated additional investment in current fiscal year | $ 0.6 | $ 2.0 | |||||
| ALLETE's Investment in ATC | |||||||
| Equity Investment Balance | 96.3 | 96.3 | 93.3 | ||||
| Cash Investments | 1.4 | 1.2 | |||||
| Equity in ATC Earnings | 4.6 | 4.4 | 9.0 | 8.9 | |||
| Distributed ATC Earnings | (7.4) | ||||||
| ATC Summarized Financial Data | |||||||
| Revenue | 138.2 | 138.7 | 277.8 | 277.1 | |||
| Operating Expense | 63.0 | 62.9 | 126.1 | 125.7 | |||
| Other Expense | 19.6 | 21.7 | 41.9 | 42.2 | |||
| Net Income | 55.6 | 54.1 | 109.8 | 109.2 | |||
| ALLETE's Equity in Net Income | $ 4.6 | $ 4.4 | $ 9.0 | $ 8.9 | |||
| X | ||||||||||
|
- Definition
Anticipated additional contributions to acquire additional equity in equity method investments. No definition available.
|
| X | ||||||||||
|
- Definition
The approved percentage return on common equity dedicated to the utility plant in equity method investment. No definition available.
|
| X | ||||||||||
|
- Definition
The amount of the operating expense reported by an equity method investment of the entity. No definition available.
|
| X | ||||||||||
|
- Definition
The amount of other expense reported by an equity method investment of the entity. No definition available.
|
| X | ||||||||||
|
- Definition
This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The amount of net income (loss) reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity. No definition available.
|
| X | ||||||||||
|
- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow associated with the acquisition of a controlling interest in another entity or an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Short-Term and Long-Term Debt (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2011
|
Dec. 31, 2010
|
Jun. 30, 2011
Allete [Member]
|
May 25, 2011
Allete [Member]
|
Jan. 11, 2006
Allete [Member]
|
Jun. 30, 2011
Bni Coal [Member]
|
May 25, 2011
Bni Coal [Member]
|
Nov. 12, 2009
Bni Coal [Member]
|
|
| Short-Term and Long-Term Debt (Details) [Abstract] | ||||||||
| Long-term debt outstanding | $ 770.7 | $ 771.6 | ||||||
| Debt instrument, restrictive covenant | 0.65 to 1.00 | |||||||
| Line of Credit Facility [Line Items] | ||||||||
| Credit Agreement | 250.0 | 150.0 | 10.0 | 3.0 | ||||
| Credit Agreement Effective Date | 07-01-2011 | |||||||
| Credit Agreement Capacity Available for Issuance of Letters of Credit | 40.0 | |||||||
| Credit Agreement Extension Available | 1Y | |||||||
| Credit Agreement Expiration Date | 06-30-2015 | |||||||
| Line of Credit Facility, Amount Withdrawn | 2.5 | |||||||
| Debt instrument, actual restrictive covenant range (in hundredths) | 0.42 to 1.00 | |||||||
| Debt due within one year | $ 15.4 | $ 14.4 |
| X | ||||||||||
|
- Definition
Debt instrument, actual restrictive covenant range No definition available.
|
| X | ||||||||||
|
- Definition
No authoritative reference available. No definition available.
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount borrowed under the credit facility as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer. No definition available.
|
| X | ||||||||||
|
- Definition
Reflects when the credit facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Reflects when the credit facility first became available, which may be presented in a variety of ways (year, month and year, day, month and year, quarter). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Other Income (Expense) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
|
| Other Income (Expense) [Abstract] | ||||
| AFUDC - Equity | $ 0.5 | $ 0.9 | $ 1.1 | $ 2.1 |
| Investment and Other Income (Expense) | 0.5 | 1.3 | 0.7 | 1.1 |
| Total Other Income | $ 1.0 | $ 2.2 | $ 1.8 | $ 3.2 |
| X | ||||||||||
|
- Definition
The increase (decrease) during the reporting period in the capitalized cost of equity (based on assumed rate of return) and / or borrowed funds (based on interest rate) used to finance construction of regulated assets, which is expected to be recovered through rate adjustments. As a result of this capitalization, net income is increased. This element pertains to certain regulated industries, such as public utilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Income Tax Expense (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
|||||||||
| Current Tax Expense (Benefit) | ||||||||||||
| Federal - Current | $ 0 | [1] | $ 0 | [1] | $ 0 | [1] | $ 7.2 | [1] | ||||
| State - Current | 0.1 | [1] | (1.9) | [1] | 0.2 | [1] | (1.0) | [1] | ||||
| Total Current Tax Expense | 0.1 | (1.9) | 0.2 | 6.2 | ||||||||
| Deferred Tax Expense | ||||||||||||
| Federal - Deferred | 4.0 | [2] | 8.2 | [2] | 10.8 | [2] | 18.0 | [2] | ||||
| State - Deferred | 0 | [2] | 3.3 | [2] | 1.5 | [2] | 5.5 | [2] | ||||
| Deferred Tax Credits | (0.3) | (0.2) | (0.5) | (0.4) | ||||||||
| Total Deferred Tax Expense | 3.7 | 11.3 | 11.8 | 23.1 | ||||||||
| Total Income Tax Expense | 3.8 | 9.4 | 12.0 | 29.3 | ||||||||
| Amount of income tax benefit (expense) related to Medicare Part D | 2.9 | 2.9 | (4.0) | |||||||||
| Deferred tax adjustments | 6.2 | |||||||||||
| Effective tax rate | 18.20% | 41.00% | ||||||||||
| Effective tax rate, reduction due to income tax benefit | 4.40% | |||||||||||
| Effective tax rate, reduction due to reversal of deferred tax liability | 9.40% | |||||||||||
| Effective tax rate, statutory | 41.00% | 41.00% | ||||||||||
| Gross unrecognized tax benefits | 11.3 | 11.3 | ||||||||||
| Unrecognized tax benefits that would favorably impact effective tax rate | $ 0.6 | $ 0.6 | ||||||||||
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| X | ||||||||||
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- Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to an income tax benefit. No definition available.
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| X | ||||||||||
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- Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to a reversal of deferred tax liability. No definition available.
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The change during the period in the entity's deferred tax assets and liabilities attributable to continuing operations as determined by applying enacted tax laws other than federal, domestic, foreign, state or local. Items affecting deferred income taxes and required to be disclosed, but not included elsewhere, would also be designated as "Other"; for example, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity and adjustments to be beginning-of-year balance of a valuation allowance because of a change in circumstance that causes a change in judgment about the realizability of the related deferred tax asset in future periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of total income tax expense for the period comprised of the increase (decrease) in the entity's state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
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Jun. 30, 2010
|
|
| Comprehensive Income (Loss) | ||||
| Net Income | $ 16.9 | $ 19.4 | $ 54.0 | $ 42.2 |
| Other Comprehensive Income | ||||
| Unrealized Gain on Securities Net of Income Taxes | 0.2 | (0.6) | 1.1 | (0.5) |
| Defined Benefit Pension and Other Postretirement Plans Net of Income Taxes | 0.4 | 0.3 | 0.8 | 0.6 |
| Total Other Comprehensive Income | 0.6 | (0.3) | 1.9 | 0.1 |
| Total Comprehensive Income | 17.5 | 19.1 | 55.9 | 42.3 |
| Less: Non-Controlling Interest in Subsidiaries | (0.1) | 0 | (0.2) | (0.2) |
| Comprehensive Income Attributable to ALLETE | 17.6 | 19.1 | 56.1 | 42.5 |
| Income Taxes on Unrealized Gains on Securities | 0.2 | (0.4) | 0.8 | (0.4) |
| Income Taxes on Defined Benefit Pension and Other Postretirement Plans | $ 0.2 | $ 0.2 | $ 0.5 | $ 0.4 |
| X | ||||||||||
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- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests, if any. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) in accumulated comprehensive income during the period related to pension and other postretirement benefit plans, after tax. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
This element represents Other Comprehensive Income or Loss, Net of Tax, for the period attributable to the parent entity. Includes deferred gains or losses on qualifying hedges, unrealized holding gains or losses on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain (loss), net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain (loss) at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains (losses) realized upon the sale of securities, after tax; and (3) the unrealized gains (losses) realized upon the write-down of securities, after tax. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Earnings Per Share and Common Stock (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
|
| Earnings Per Share and Common Stock [Abstract] | ||||
| Common Shares Excluded (shares) | 0.3 | 0.6 | 0.3 | 0.6 |
| Net Income (Loss) Attributable to ALLETE | $ 17.0 | $ 19.4 | $ 54.2 | $ 42.4 |
| Common Shares (shares) | 35.0 | 34.1 | 34.8 | 34.0 |
| Earnings Per Share - Basic (in dollars per share) | $ 0.49 | $ 0.57 | $ 1.56 | $ 1.25 |
| Dilutive Securities (shares) | 0.1 | 0.1 | 0.1 | 0.1 |
| Diluted Common Shares (shares) | 35.1 | 34.2 | 34.9 | 34.1 |
| Earnings Per Share -Diluted (in dollars per share) | $ 0.48 | $ 0.57 | $ 1.55 | $ 1.25 |
| X | ||||||||||
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- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the transition obligation or asset recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
The increase in the fair value of plan assets from contributions made by the employer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions. No definition available.
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| X | ||||||||||
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- Definition
An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the period's gross receipts received from the prescription drug subsidy, which is to be used in the roll forward of the accumulated postretirement benefit obligation of an applicable postretirement benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of damages being sought from Company related to lawsuit from fire as a result of failure of certain electrical protective equipment No definition available.
|
| X | ||||||||||
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- Definition
Amount spent to date for CapX2020 transmission line projects. No definition available.
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| X | ||||||||||
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- Definition
Estimated annual special assessments owed on community development districts based on current ownership percentages. No definition available.
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| X | ||||||||||
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- Definition
The annual debt service on the outstanding debt for Square Butte, a North Dakota cooperative corporation which owns a 455 MW coal-fired generating unit near Center, North Dakota. No definition available.
|
| X | ||||||||||
|
- Definition
Capacity of CapX2020 transmission line between Bemidji and Minnesota Power's Boswell Energy Center near Grand Rapids, MN. No definition available.
|
| X | ||||||||||
|
- Definition
Capacity of CapX2020 transmission line from Fargo to Monticello. No definition available.
|
| X | ||||||||||
|
- Definition
Capacity of transmission line built in phase one of wind project. No definition available.
|
| X | ||||||||||
|
- Definition
Capacity of turbines built for phase one of wind project. No definition available.
|
| X | ||||||||||
|
- Definition
Capacity of turbines built for phase two of wind project. No definition available.
|
| X | ||||||||||
|
- Definition
Represents time period over which capital improvement and special assessment bonds are payable over. No definition available.
|
| X | ||||||||||
|
- Definition
Represents MW capacity for coal-fired generating unit near Center, ND. No definition available.
|
| X | ||||||||||
|
- Definition
Represents kV capacity from Square Butte. No definition available.
|
| X | ||||||||||
|
- Definition
Length of DC transmission line. No definition available.
|
| X | ||||||||||
|
- Definition
Annual dragline lease payment for BNI. No definition available.
|
| X | ||||||||||
|
- Details
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| X | ||||||||||
|
- Definition
Interest rate on tax-exempt capital improvement revenue bonds issued. No definition available.
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| X | ||||||||||
|
- Details
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| X | ||||||||||
|
- Definition
Expiration date of leasing agreement for dragline lease. No definition available.
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| X | ||||||||||
|
- Details
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| X | ||||||||||
|
- Definition
Length of CapX2020 transmission line between Bemidji and Minnesota Power's Boswell Energy Center near Grand Rapids, MN. No definition available.
|
| X | ||||||||||
|
- Definition
Length of CapX2020 transmission line from Fargo to Monticello. No definition available.
|
| X | ||||||||||
|
- Definition
Length of transmission line built in phase one of wind project. No definition available.
|
| X | ||||||||||
|
- Definition
Length of long-term wind PPAs. No definition available.
|
| X | ||||||||||
|
- Definition
Represents MW capacity Minnesota Power is purchasing from Manitoba Hydro. No definition available.
|
| X | ||||||||||
|
- Definition
Expiration date of PPA with Manitoba Hydro. No definition available.
|
| X | ||||||||||
|
- Definition
Ending date of PPA wwith Manitoba Hydro to purchase surplus energy. No definition available.
|
| X | ||||||||||
|
- Definition
Beginning date of PPA with Manitoba Hydro to purchase surplus energy. No definition available.
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| X | ||||||||||
|
- Definition
The maximum amount expected to be invested in transmission line projects. No definition available.
|
| X | ||||||||||
|
- Definition
The minimum amount expected to be invested in transmission line projects. No definition available.
|
| X | ||||||||||
|
- Definition
Minimum MWh of surplus energy to be purchased from Minnkota Power over contract term. No definition available.
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| X | ||||||||||
|
- Definition
Expiration date of PPA with Minnkota Power. No definition available.
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| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
No authoritative reference available. No definition available.
|
| X | ||||||||||
|
- Definition
Number of turbines built in phase one of wind project. No definition available.
|
| X | ||||||||||
|
- Definition
Number of turbines built in phase two of wind project. No definition available.
|
| X | ||||||||||
|
- Definition
Represents MW capacity for Oliver Wind I. No definition available.
|
| X | ||||||||||
|
- Definition
Represents MW capacity for Oliver Wind I. No definition available.
|
| X | ||||||||||
|
- Definition
Future lease payment obligations due within one year of the balance sheet date under an operating lease. No definition available.
|
| X | ||||||||||
|
- Definition
Future lease payment obligations due within five years of the balance sheet date under an operating lease. No definition available.
|
| X | ||||||||||
|
- Definition
Future lease payment obligations due within five years of the balance sheet date under an operating lease. No definition available.
|
| X | ||||||||||
|
- Definition
Future lease payment obligations due within three years of the balance sheet date under an operating lease. No definition available.
|
| X | ||||||||||
|
- Definition
Future lease payment obligations due within two years of the balance sheet date under an operating lease. No definition available.
|
| X | ||||||||||
|
- Definition
Future lease payment obligations due in greater than five years of the balance sheet date under an operating lease. No definition available.
|
| X | ||||||||||
|
- Definition
Ownership percentage in property covered by community development district. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Expiration date of PPA with Square Butte. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of surety bonds that are available for future payment obligations. No definition available.
|
| X | ||||||||||
|
- Definition
A lump sum payment in conjunction with a lease termination. No definition available.
|
| X | ||||||||||
|
- Definition
Represents total wind project costs to date. No definition available.
|
| X | ||||||||||
|
- Definition
Total current estimated liability for performance obligation. No definition available.
|
| X | ||||||||||
|
- Definition
The total debt outstanding for Square Butte, a North Dakota cooperative corporation which owns a 455 MW coal-fired generating unit near Center, North Dakota. No definition available.
|
| X | ||||||||||
|
- Definition
Represents total expected capital cost for wind project in North Dakota. No definition available.
|
| X | ||||||||||
|
- Definition
Represents total MW capacity for wind development project. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying amount of the liability for remediation of environmental damage pertaining to assets or businesses previously disposed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Share of plant output being purchased under a long-term contract to purchase electricity from a production plant constructed and financed by a public utility district, cooperative, or other organization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The aggregate amount of payments due in the second year after the balance sheet date to reduce a recorded unconditional purchase obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate amount of payments due in the third year after the balance sheet date to reduce a recorded unconditional purchase obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate amount of payments due in the first year after the balance sheet date to reduce a recorded unconditional purchase obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Details
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| X | ||||||||||
|
- Definition
Including the current and noncurrent portions, carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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