Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flow Hedges, Tax	$ 3,000,000	$ 13,000,000
Securities Available for Sale, Tax	0	1,000,000
Amortization of Pension and OPEB Deferred Costs, Tax	0	3,000,000
Appalachian Power Co [Member]
Cash Flow Hedges, Tax	132,000	677,000
Amortization of Pension and OPEB Deferred Costs, Tax	(179,000)	193,000
Indiana Michigan Power Co [Member]
Cash Flow Hedges, Tax	229,000	1,682,000
Amortization of Pension and OPEB Deferred Costs, Tax	23,000	94,000
Ohio Power Co [Member]
Cash Flow Hedges, Tax	(241,000)	574,000
Amortization of Pension and OPEB Deferred Costs, Tax	0	1,760,000
Public Service Co Of Oklahoma [Member]
Cash Flow Hedges, Tax	(132,000)	(90,000)
Southwestern Electric Power Co [Member]
Cash Flow Hedges, Tax	270,000	321,000
Amortization of Pension and OPEB Deferred Costs, Tax	$ (126,000)	$ (34,000)