Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net Income (Loss)	$ 339,000,000	$ 363,000,000	$ 703,000,000	$ 753,000,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(10,000,000)	(10,000,000)	14,000,000	(21,000,000)
Securities Available for Sale, Net of Tax	0	(1,000,000)	1,000,000	1,000,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	3,000,000	8,000,000	9,000,000	15,000,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(7,000,000)	(3,000,000)	24,000,000	(5,000,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	332,000,000	360,000,000	727,000,000	748,000,000
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 COMMON SHAREHOLDERS	331,000,000	359,000,000	725,000,000	746,000,000
Appalachian Power Co [Member]
Net Income (Loss)	29,862,000	62,332,000	100,410,000	137,643,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	89,000	566,000	1,347,000	27,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	358,000	899,000	716,000	1,799,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	447,000	1,465,000	2,063,000	1,826,000
TOTAL COMPREHENSIVE INCOME (LOSS)	30,309,000	63,797,000	102,473,000	139,469,000
Indiana Michigan Power Co [Member]
Net Income (Loss)	40,754,000	29,810,000	84,211,000	69,031,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	321,000	(7,433,000)	3,444,000	(4,977,000)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	175,000	278,000	351,000	557,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	496,000	(7,155,000)	3,795,000	(4,420,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	41,250,000	22,655,000	88,006,000	64,611,000
Ohio Power Co [Member]
Net Income (Loss)	21,056,000	101,423,000	150,830,000	252,253,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(545,000)	170,000	521,000	(1,571,000)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	3,270,000	3,240,000	6,539,000	6,481,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	2,725,000	3,410,000	7,060,000	4,910,000
TOTAL COMPREHENSIVE INCOME (LOSS)	23,781,000	104,833,000	157,890,000	257,163,000
Public Service Co Of Oklahoma [Member]
Net Income (Loss)	28,432,000	35,211,000	42,125,000	47,859,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(254,000)	(359,000)	(421,000)	(412,000)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(254,000)		(421,000)	(412,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	28,178,000	34,852,000	41,704,000	47,447,000
Southwestern Electric Power Co [Member]
Net Income (Loss)	30,227,000	54,902,000	41,775,000	91,297,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	490,000	396,000	1,086,000	(1,379,000)
Amortization of Pension and OPEB Deferred Costs, Net of Tax	(64,000)	167,000	(127,000)	332,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	426,000	563,000	959,000	(1,047,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	30,653,000	55,465,000	42,734,000	90,250,000
Total Comprehensive Income Attributable to Noncontrolling Interest	1,056,000	1,061,000	2,146,000	2,144,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 29,597,000	$ 54,404,000	$ 40,588,000	$ 88,106,000