Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)
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12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
|
|
Cash Flow Hedges, Tax | $ 18,000,000 | $ 14,000,000 | $ 4,000,000 |
Securities Available for Sale, Tax | 1,000,000 | 4,000,000 | 6,000,000 |
Reapplication of Regulated Operations Accounting Guidance for Pensions, Tax | 8,000,000 | ||
Amortization of Pension and OPEB Deferred Costs, Tax | 13,000,000 | 12,000,000 | 13,000,000 |
Pension and OPEB Funded Status, Tax | 41,000,000 | 25,000,000 | 12,000,000 |
Appalachian Power Co [Member]
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Cash Flow Hedges, Tax | 123,000 | 3,843,000 | 970,000 |
Amortization of Pension and OPEB Deferred Costs, Tax | 1,674,000 | 2,247,000 | 2,642,000 |
Pension and OPEB Funded Status, Tax | 7,215,000 | 4,888,000 | 3,697,000 |
Indiana Michigan Power Co [Member]
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Cash Flow Hedges, Tax | 3,553,000 | 652,000 | 462,000 |
Amortization of Pension and OPEB Deferred Costs, Tax | 510,000 | 470,000 | 445,000 |
Pension and OPEB Funded Status, Tax | 906,000 | 685,000 | 13,000 |
Ohio Power Co [Member]
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Cash Flow Hedges, Tax | 1,477,000 | 529,000 | 3,365,000 |
Amortization of Pension and OPEB Deferred Costs, Tax | 5,894,000 | 5,128,000 | 4,614,000 |
Pension and OPEB Funded Status, Tax | 13,876,000 | 10,901,000 | 870,000 |
Public Service Co Of Oklahoma [Member]
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Cash Flow Hedges, Tax | 724,000 | 4,896,000 | 57,000 |
Southwestern Electric Power Co [Member]
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Cash Flow Hedges, Tax | 6,103,000 | 401,000 | 533,000 |
Reapplication of Regulated Operations Accounting Guidance for Pensions, Tax | 0 | 0 | 8,223,000 |
Amortization of Pension and OPEB Deferred Costs, Tax | 275,000 | 505,000 | 928,000 |
Pension and OPEB Funded Status, Tax | $ 1,885,000 | $ 636,000 | $ 617,000 |