Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net Income (Loss)	$ 363,000,000	$ 353,000,000	$ 753,000,000	$ 708,000,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(10,000,000)	5,000,000	(21,000,000)	6,000,000
Securities Available for Sale, Net of Tax	(1,000,000)	0	1,000,000	1,000,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	8,000,000	6,000,000	15,000,000	12,000,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(3,000,000)	11,000,000	(5,000,000)	19,000,000
TOTAL COMPREHENSIVE INCOME (LOSS)	360,000,000	364,000,000	748,000,000	727,000,000
Total Comprehensive Income Attributable to Noncontrolling Interest	1,000,000	1,000,000	2,000,000	2,000,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO SHAREHOLDERS	359,000,000	363,000,000	746,000,000	725,000,000
Preferred Stock Dividend Requirements	0	0	0	1,000,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	359,000,000	363,000,000	746,000,000	724,000,000
Appalachian Power Co [Member]
Net Income (Loss)	62,332,000	31,627,000	137,643,000	70,607,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	566,000	700,000	27,000	1,211,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	899,000	777,000	1,799,000	1,554,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	1,465,000	1,477,000	1,826,000	2,765,000
TOTAL COMPREHENSIVE INCOME (LOSS)	63,797,000	33,104,000	139,469,000	73,372,000
Preferred Stock Dividend Requirements	0	200,000	0	400,000
Indiana Michigan Power Co [Member]
Net Income (Loss)	29,810,000	31,386,000	69,031,000	76,813,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(7,433,000)	528,000	(4,977,000)	1,059,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	278,000	236,000	557,000	473,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(7,155,000)	764,000	(4,420,000)	1,532,000
TOTAL COMPREHENSIVE INCOME (LOSS)	22,655,000	32,150,000	64,611,000	78,345,000
Preferred Stock Dividend Requirements	0	85,000	0	170,000
Ohio Power Co [Member]
Net Income (Loss)	101,423,000	142,194,000	252,253,000	308,164,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	170,000	228,000	(1,571,000)	521,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	3,240,000	2,640,000	6,481,000	5,281,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	3,410,000	2,868,000	4,910,000	5,802,000
TOTAL COMPREHENSIVE INCOME (LOSS)	104,833,000	145,062,000	257,163,000	313,966,000
Preferred Stock Dividend Requirements	0	208,000	0	416,000
Public Service Co Of Oklahoma [Member]
Net Income (Loss)	35,211,000	31,560,000	47,859,000	46,949,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(359,000)	(313,000)	(412,000)	(756,000)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)			(412,000)	(756,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	34,852,000	31,247,000	47,447,000	46,193,000
Preferred Stock Dividend Requirements	0	49,000	0	98,000
Southwestern Electric Power Co [Member]
Net Income (Loss)	54,902,000	51,071,000	91,297,000	80,898,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	396,000	(121,000)	(1,379,000)	255,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	167,000	1,137,000	332,000	1,265,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	563,000	1,016,000	(1,047,000)	1,520,000
TOTAL COMPREHENSIVE INCOME (LOSS)	55,465,000	52,087,000	90,250,000	82,418,000
Total Comprehensive Income Attributable to Noncontrolling Interest	1,061,000	1,036,000	2,144,000	2,118,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO SHAREHOLDERS	54,404,000	51,051,000	88,106,000	80,300,000
Preferred Stock Dividend Requirements	$ 0	$ 57,000	$ 0	$ 114,000