Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Other Intangible Assets (Tables) [Abstract]

Changes in Carrying Amount of Goodwill

					Generation
	Utility		AEP River			and	AEP
	Operations		Operations		Marketing		Consolidated
	(in millions)
Balance as of December 31, 2010	$	37	$	39	$	-	$	76
Impairment Losses		-		-		-		-
Balance as of December 31, 2011		37		39		-		76
Acquired Goodwill		-		-		15		15
Impairment Losses		-		-		-		-
Balance as of December 31, 2012	$	37	$	39	$	15	$	91

Amortization Life, Gross Carrying Amount and Accumulated Amortization by Major Asset Class

		December 31,
		2012				2011
		Gross				Gross
	Amortization	Carrying		Accumulated		Carrying		Accumulated
	Life	Amount		Amortization		Amount		Amortization
	(in years)	(in millions)
Easements	10	$	-	$	-	$	2	$	2
Purchased Technology	10		-		-		11		11
Acquired Customer Contracts	5		58		34		-		-
Total		$	58	$	34	$	13	$	13