Business Segments (Tables)

3 Months Ended

Mar. 31, 2013

Business Segments (Tables) [Abstract]

Reportable Segment Information

						Nonutility Operations
								Generation
		Utility		Transmission		AEP River		and		All Other		Reconciling
		Operations		Operations		Operations		Marketing		(a)		Adjustments		Consolidated
		(in millions)
Three Months Ended March 31, 2013
Revenues from:
	External Customers	$	3,486	$	3	$	128	$	206	$	3	$	-	$	3,826
	Other Operating Segments		31		5		5		-		2		(43)		-
Total Revenues		$	3,517	$	8	$	133	$	206	$	5	$	(43)	$	3,826
Net Income (Loss)		$	349	$	13	$	(2)	$	7	$	(3)	$	-	$	364
						Nonutility Operations
								Generation
		Utility		Transmission		AEP River		and		All Other		Reconciling
		Operations		Operations		Operations		Marketing		(a)		Adjustments		Consolidated
		(in millions)
Three Months Ended March 31, 2012
Revenues from:
	External Customers	$	3,362	$	1	$	172	$	85	$	5	$	-	$	3,625
	Other Operating Segments		23		2		7		-		2		(34)		-
Total Revenues		$	3,385	$	3	$	179	$	85	$	7	$	(34)	$	3,625
Net Income (Loss)		$	384	$	9	$	9	$	(1)	$	(11)	$	-	$	390

						Nonutility Operations
								Generation				Reconciling
		Utility		Transmission		AEP River		and		All Other		Adjustments
		Operations		Operations		Operations		Marketing		(a)		(b)			Consolidated
		(in millions)
March 31, 2013
Total Property, Plant and Equipment		$	56,152	$	921	$	638	$	625	$	8	$	(269)		$	58,075
Accumulated Depreciation and
	Amortization		18,585		5		169		254		7		(75)			18,945
Total Property, Plant and
	Equipment - Net	$	37,567	$	916	$	469	$	371	$	1	$	(194)		$	39,130
Total Assets		$	51,534	$	1,409	$	640	$	1,003	$	17,795	$	(17,831)	(c)	$	54,550
						Nonutility Operations
								Generation				Reconciling
		Utility		Transmission		AEP River		and		All Other		Adjustments
		Operations		Operations		Operations		Marketing		(a)		(b)			Consolidated
		(in millions)
December 31, 2012
Total Property, Plant and Equipment		$	55,707	$	748	$	636	$	621	$	8	$	(266)		$	57,454
Accumulated Depreciation and
	Amortization		18,344		4		161		246		7		(71)			18,691
Total Property, Plant and
	Equipment - Net	$	37,363	$	744	$	475	$	375	$	1	$	(195)		$	38,763
Total Assets		$	51,477	$	1,216	$	670	$	1,005	$	17,191	$	(17,192)	(c)	$	54,367

(a)All Other includes Parent's guarantee revenue received from affiliates, investment income, interest income and interest expense and other nonallocated costs.

(b)Includes eliminations due to an intercompany capital lease.

(c)Reconciling Adjustments for Total Assets primarily include the elimination of intercompany advances to affiliates and intercompany accounts receivable along with the elimination of AEP's investments in subsidiary companies.