Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net Income (Loss)	$ 488,000,000	$ 930,000,000	$ 1,241,000,000	$ 1,638,000,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	13,000,000	(20,000,000)	(8,000,000)	(14,000,000)
Securities Available for Sale, Net of Tax	1,000,000	(4,000,000)	2,000,000	(3,000,000)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	7,000,000	6,000,000	22,000,000	18,000,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	21,000,000	(18,000,000)	16,000,000	1,000,000
TOTAL COMPREHENSIVE INCOME (LOSS)	509,000,000	912,000,000	1,257,000,000	1,639,000,000
Total Comprehensive Income Attributable to Noncontrolling Interest	1,000,000	1,000,000	3,000,000	3,000,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO SHAREHOLDERS	508,000,000	911,000,000	1,254,000,000	1,636,000,000
Preferred Stock Dividend Requirements	0	1,000,000	0	2,000,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	508,000,000	910,000,000	1,254,000,000	1,634,000,000
Appalachian Power Co [Member]
Net Income (Loss)	63,191,000	52,804,000	200,834,000	123,411,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	1,719,000	(444,000)	1,746,000	767,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	899,000	778,000	2,698,000	2,332,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	2,618,000	334,000	4,444,000	3,099,000
TOTAL COMPREHENSIVE INCOME (LOSS)	65,809,000	53,138,000	205,278,000	126,510,000
Preferred Stock Dividend Requirements	0	199,000	0	599,000
Indiana Michigan Power Co [Member]
Net Income (Loss)	39,254,000	51,702,000	108,285,000	128,515,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(404,000)	(4,891,000)	(5,381,000)	(3,832,000)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	278,000	238,000	835,000	711,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(126,000)	(4,653,000)	(4,546,000)	(3,121,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	39,128,000	47,049,000	103,739,000	125,394,000
Preferred Stock Dividend Requirements	0	85,000	0	255,000
Ohio Power Co [Member]
Net Income (Loss)	151,510,000	128,339,000	403,763,000	436,503,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	1,776,000	(1,204,000)	205,000	(683,000)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	3,240,000	2,929,000	9,721,000	8,210,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	5,016,000	1,725,000	9,926,000	7,527,000
TOTAL COMPREHENSIVE INCOME (LOSS)	156,526,000	130,064,000	413,689,000	444,030,000
Preferred Stock Dividend Requirements	0	208,000	0	624,000
Public Service Co Of Oklahoma [Member]
Net Income (Loss)	58,103,000	57,349,000	105,962,000	104,298,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(53,000)	(432,000)	(465,000)	(1,188,000)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)			(465,000)	(1,188,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	58,050,000	56,917,000	105,497,000	103,110,000
Preferred Stock Dividend Requirements	0	49,000	0	147,000
Southwestern Electric Power Co [Member]
Net Income (Loss)	89,218,000	87,795,000	180,515,000	168,693,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	697,000	(9,903,000)	(682,000)	(9,648,000)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	167,000	(882,000)	499,000	383,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	864,000	(10,785,000)	(183,000)	(9,265,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	90,082,000	77,010,000	180,332,000	159,428,000
Total Comprehensive Income Attributable to Noncontrolling Interest	955,000	1,023,000	3,099,000	3,141,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO SHAREHOLDERS	89,127,000	75,987,000	177,233,000	156,287,000
Preferred Stock Dividend Requirements	$ 0	$ 58,000	$ 0	$ 172,000