Condensed Consolidated Statements of Changes in Equity and Comprehensive Income (Loss) (Unaudited) (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash Flow Hedges, Tax	$ 8,000,000	$ 1,000,000
Securities Available for Sale, Tax	2,000,000	5,000,000
Amortization of Pension and OPEB Deferred Costs, Tax	9,000,000	9,000,000
Appalachian Power Co [Member]
Cash Flow Hedges, Tax	413,000	1,953,000
Amortization of Pension and OPEB Deferred Costs, Tax	1,255,000	1,685,000
Columbus Southern Power Co [Member]
Cash Flow Hedges, Tax	74,000	462,000
Amortization of Pension and OPEB Deferred Costs, Tax	1,187,000	1,000,000
Indiana Michigan Power Co [Member]
Cash Flow Hedges, Tax	2,063,000	77,000
Amortization of Pension and OPEB Deferred Costs, Tax	383,000	352,000
Ohio Power Co [Member]
Cash Flow Hedges, Tax	442,000	1,158,000
Amortization of Pension and OPEB Deferred Costs, Tax	3,234,000	2,846,000
Public Service Co Of Oklahoma [Member]
Cash Flow Hedges, Tax	640,000	97,000
Southwestern Electric Power Co [Member]
Cash Flow Hedges, Tax	5,195,000	248,000
Amortization of Pension and OPEB Deferred Costs, Tax	$ 206,000	$ 379,000