Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

Components of Net Periodic Benefit Cost

					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended June 30,				Three Months Ended June 30,
	2013		2012		2013		2012
	(in millions)
Service Cost	$	18	$	19	$	6	$	11
Interest Cost		51		55		17		26
Expected Return on Plan Assets		(70)		(79)		(26)		(25)
Amortization of Prior Service Credit		-		-		(18)		(4)
Amortization of Net Actuarial Loss		46		38		16		15
Net Periodic Benefit Cost (Credit)	$	45	$	33	$	(5)	$	23

					Other Postretirement
	Pension Plans				Benefit Plans
	Six Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in millions)
Service Cost	$	35	$	38	$	12	$	23
Interest Cost		101		111		35		52
Expected Return on Plan Assets		(139)		(159)		(53)		(50)
Amortization of Prior Service Cost (Credit)		1		-		(35)		(9)
Amortization of Net Actuarial Loss		92		75		32		29
Net Periodic Benefit Cost (Credit)	$	90	$	65	$	(9)	$	45

Appalachian Power Co [Member]

Components of Net Periodic Benefit Cost

APCo
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended June 30,				Three Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	1,542	$	1,891	$	642	$	1,347
Interest Cost		6,915		7,553		3,364		4,615
Expected Return on Plan Assets		(9,260)		(10,486)		(4,537)		(4,188)
Amortization of Transition Obligation		-		-		-		200
Amortization of Prior Service Cost (Credit)		50		119		(2,513)		(715)
Amortization of Net Actuarial Loss		6,257		5,084		3,062		2,632
Net Periodic Benefit Cost	$	5,504	$	4,161	$	18	$	3,891

					Other Postretirement
	Pension Plans				Benefit Plans
	Six Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	3,085	$	3,782	$	1,283	$	2,694
Interest Cost		13,831		15,106		6,727		9,231
Expected Return on Plan Assets		(18,520)		(20,972)		(9,073)		(8,376)
Amortization of Transition Obligation		-		-		-		400
Amortization of Prior Service Cost (Credit)		99		238		(5,025)		(1,431)
Amortization of Net Actuarial Loss		12,513		10,169		6,124		5,263
Net Periodic Benefit Cost	$	11,008	$	8,323	$	36	$	7,781

Indiana Michigan Power Co [Member]

Components of Net Periodic Benefit Cost

I&M
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended June 30,				Three Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	2,184	$	2,477	$	805	$	1,655
Interest Cost		6,025		6,561		2,055		3,197
Expected Return on Plan Assets		(8,206)		(9,392)		(3,296)		(3,212)
Amortization of Transition Obligation		-		-		-		33
Amortization of Prior Service Cost (Credit)		48		102		(2,355)		(596)
Amortization of Net Actuarial Loss		5,422		4,393		1,881		1,763
Net Periodic Benefit Cost (Credit)	$	5,473	$	4,141	$	(910)	$	2,840

					Other Postretirement
	Pension Plans				Benefit Plans
	Six Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	4,368	$	4,954	$	1,610	$	3,310
Interest Cost		12,050		13,122		4,110		6,393
Expected Return on Plan Assets		(16,413)		(18,783)		(6,592)		(6,423)
Amortization of Transition Obligation		-		-		-		66
Amortization of Prior Service Cost (Credit)		97		204		(4,710)		(1,192)
Amortization of Net Actuarial Loss		10,844		8,785		3,763		3,525
Net Periodic Benefit Cost (Credit)	$	10,946	$	8,282	$	(1,819)	$	5,679

Ohio Power Co [Member]

Components of Net Periodic Benefit Cost

OPCo
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended June 30,				Three Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	2,373	$	2,751	$	1,299	$	2,187
Interest Cost		10,292		11,299		4,447		6,048
Expected Return on Plan Assets		(15,142)		(17,101)		(6,239)		(5,639)
Amortization of Transition Obligation		-		-		-		26
Amortization of Prior Service Cost (Credit)		70		185		(3,230)		(968)
Amortization of Net Actuarial Loss		9,309		7,610		4,041		3,417
Net Periodic Benefit Cost	$	6,902	$	4,744	$	318	$	5,071

					Other Postretirement
	Pension Plans				Benefit Plans
	Six Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	4,745	$	5,502	$	2,599	$	4,374
Interest Cost		20,584		22,597		8,894		12,095
Expected Return on Plan Assets		(30,283)		(34,201)		(12,477)		(11,278)
Amortization of Transition Obligation		-		-		-		52
Amortization of Prior Service Cost (Credit)		141		371		(6,461)		(1,936)
Amortization of Net Actuarial Loss		18,618		15,220		8,082		6,834
Net Periodic Benefit Cost	$	13,805	$	9,489	$	637	$	10,141

Public Service Co Of Oklahoma [Member]

Components of Net Periodic Benefit Cost

PSO
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended June 30,				Three Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	1,390	$	1,488	$	343	$	709
Interest Cost		2,749		3,075		948		1,450
Expected Return on Plan Assets		(3,919)		(4,504)		(1,522)		(1,481)
Amortization of Prior Service Cost (Credit)		74		(237)		(1,073)		(269)
Amortization of Net Actuarial Loss		2,461		2,051		869		797
Net Periodic Benefit Cost (Credit)	$	2,755	$	1,873	$	(435)	$	1,206

					Other Postretirement
	Pension Plans				Benefit Plans
	Six Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	2,781	$	2,976	$	686	$	1,418
Interest Cost		5,497		6,150		1,896		2,899
Expected Return on Plan Assets		(7,837)		(9,008)		(3,044)		(2,961)
Amortization of Prior Service Cost (Credit)		148		(474)		(2,145)		(539)
Amortization of Net Actuarial Loss		4,922		4,103		1,738		1,594
Net Periodic Benefit Cost (Credit)	$	5,511	$	3,747	$	(869)	$	2,411

Southwestern Electric Power Co [Member]

Components of Net Periodic Benefit Cost

SWEPCo
					Other Postretirement
	Pension Plans				Benefit Plans
	Three Months Ended June 30,				Three Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	1,753	$	1,774	$	423	$	831
Interest Cost		2,863		3,135		1,076		1,668
Expected Return on Plan Assets		(4,128)		(4,716)		(1,720)		(1,698)
Amortization of Prior Service Cost (Credit)		88		(199)		(1,290)		(233)
Amortization of Net Actuarial Loss		2,554		2,082		982		914
Net Periodic Benefit Cost (Credit)	$	3,130	$	2,076	$	(529)	$	1,482

					Other Postretirement
	Pension Plans				Benefit Plans
	Six Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Service Cost	$	3,506	$	3,549	$	846	$	1,662
Interest Cost		5,727		6,269		2,151		3,336
Expected Return on Plan Assets		(8,255)		(9,433)		(3,440)		(3,397)
Amortization of Prior Service Cost (Credit)		175		(397)		(2,578)		(466)
Amortization of Net Actuarial Loss		5,107		4,165		1,964		1,829
Net Periodic Benefit Cost (Credit)	$	6,260	$	4,153	$	(1,057)	$	2,964