Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Net Income (Loss)	$ 631,000,000us-gaap_ProfitLoss	$ 561,000,000us-gaap_ProfitLoss
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(6,000,000)	5,000,000
Securities Available for Sale, Net of Tax	1,000,000	0
Amortization of Pension and OPEB Deferred Costs, Net of Tax	0	1,000,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(5,000,000)	6,000,000
TOTAL COMPREHENSIVE INCOME (LOSS)	626,000,000	567,000,000
Total Comprehensive Income Attributable to Noncontrolling Interest	2,000,000	1,000,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	624,000,000us-gaap_ComprehensiveIncomeNetOfTax	566,000,000us-gaap_ComprehensiveIncomeNetOfTax
Appalachian Power Co [Member]
Net Income (Loss)	141,793,000	101,851,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	129,000	246,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	(458,000)	(333,000)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(329,000)	(87,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	141,464,000	101,764,000
Indiana Michigan Power Co [Member]
Net Income (Loss)	72,674,000	87,089,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	267,000	425,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	12,000	43,000
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	279,000	468,000
TOTAL COMPREHENSIVE INCOME (LOSS)	72,953,000	87,557,000
Ohio Power Co [Member]
Net Income (Loss)	65,367,000	60,774,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(343,000)	(448,000)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(343,000)	(448,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	65,024,000	60,326,000
Public Service Co Of Oklahoma [Member]
Net Income (Loss)	13,685,000	8,448,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	(190,000)	(246,000)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(190,000)	(246,000)
TOTAL COMPREHENSIVE INCOME (LOSS)	13,495,000	8,202,000
Southwestern Electric Power Co [Member]
Net Income (Loss)	46,737,000	22,962,000
OTHER COMPREHENSIVE INCOME
Cash Flow Hedges, Net of Tax	567,000	502,000
Amortization of Pension and OPEB Deferred Costs, Net of Tax	(240,000)	(234,000)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	327,000	268,000
TOTAL COMPREHENSIVE INCOME (LOSS)	47,064,000	23,230,000
Total Comprehensive Income Attributable to Noncontrolling Interest	1,033,000	1,102,000
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 46,031,000	$ 22,128,000

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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