Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Cash Flow Hedges, Tax	$ 1,000,000	$ (5,000,000)	$ 4,000,000	$ 8,000,000
Securities Available for Sale, Tax	0	0	0	0
Amortization of Pension and OPEB Deferred Costs, Tax	1,000,000	2,000,000	1,000,000	5,000,000
Appalachian Power Co [Member]
Cash Flow Hedges, Tax	90,000	48,000	222,000	725,000
Amortization of Pension and OPEB Deferred Costs, Tax	(180,000)	193,000	(359,000)	386,000
Indiana Michigan Power Co [Member]
Cash Flow Hedges, Tax	189,000	172,000	418,000	1,854,000
Amortization of Pension and OPEB Deferred Costs, Tax	23,000	95,000	46,000	189,000
Ohio Power Co [Member]
Cash Flow Hedges, Tax	(185,000)	(293,000)	(426,000)	281,000
Amortization of Pension and OPEB Deferred Costs, Tax	0	1,760,000	0	3,520,000
Public Service Co Of Oklahoma [Member]
Cash Flow Hedges, Tax	(103,000)	(137,000)	(235,000)	(227,000)
Southwestern Electric Power Co [Member]
Cash Flow Hedges, Tax	306,000	264,000	576,000	585,000
Amortization of Pension and OPEB Deferred Costs, Tax	$ (127,000)	$ (34,000)	$ (253,000)	$ (68,000)