Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Appalachian Power Co [Member]
Revenues
Utility Operations	$ 666,785	$ 633,140	$ 1,417,797	$ 1,479,130
Sales to AEP Affiliates	82,531	67,365	161,222	146,136
Other Revenues	2,129	2,769	4,246	4,631
TOTAL REVENUES	751,445	703,274	1,583,265	1,629,897
Expenses
Fuel and Other Consumables Used for Electric Generation	184,698	169,616	365,279	350,256
Purchased Electricity for Resale	69,127	56,936	138,345	120,619
Purchased Electricity from AEP Affiliates	183,661	179,607	407,850	447,109
Other Operation	74,617	170,907	187,893	260,947
Maintenance	57,163	14,060	89,456	77,170
Depreciation and Amortization	67,644	73,160	136,743	150,590
Taxes Other Than Income Taxes	25,968	29,955	53,071	56,235
TOTAL EXPENSES	662,878	694,241	1,378,637	1,462,926
OPERATING INCOME (LOSS)	88,567	9,033	204,628	166,971
Other Income (Expense):
Interest Income	762	662	1,082	953
Carrying Costs Income	6,542	10,298	9,981	16,062
Allowance for Equity Funds Used During Construction	1,212	128	2,095	1,291
Interest Expense	(53,188)	(51,831)	(106,127)	(103,558)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	43,895	(31,710)	111,659	81,719
Income Tax Expense (Credit)	12,268	(12,091)	41,052	31,056
NET INCOME (LOSS)	31,627	(19,619)	70,607	50,663
Less: Preferred Stock Dividend Requirements	200	225	400	450
Capital Stock Expense				1
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	31,427	(19,844)	70,207	50,213
Columbus Southern Power Co [Member]
Revenues
Utility Operations	482,655	503,270	986,026	1,004,289
Sales to AEP Affiliates	38,421	20,090	79,146	35,922
Other Revenues	383	744	889	1,332
TOTAL REVENUES	521,459	524,104	1,066,061	1,041,543
Expenses
Fuel and Other Consumables Used for Electric Generation	93,760	105,290	206,673	219,731
Purchased Electricity for Resale	24,885	20,138	48,402	39,783
Purchased Electricity from AEP Affiliates	105,369	91,287	206,980	190,086
Other Operation	65,113	103,229	136,180	180,555
Maintenance	32,423	25,114	61,523	49,397
Depreciation and Amortization	37,531	37,602	78,957	75,089
Taxes Other Than Income Taxes	44,128	44,294	94,277	91,351
TOTAL EXPENSES	403,209	426,954	832,992	845,992
OPERATING INCOME (LOSS)	118,250	97,150	233,069	195,551
Other Income (Expense):
Interest Income	183	167	350	309
Carrying Costs Income	2,268	1,963	5,922	4,184
Allowance for Equity Funds Used During Construction	547	314	1,318	1,235
Interest Expense	(20,201)	(21,091)	(39,949)	(42,875)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	101,047	78,503	200,710	158,404
Income Tax Expense (Credit)	34,519	26,387	68,624	54,638
NET INCOME (LOSS)	66,528	52,116	132,086	103,766
Capital Stock Expense	25	40	50	79
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	66,503	52,076	132,036	103,687
Indiana Michigan Power Co [Member]
Revenues
Utility Operations	419,627	408,702	876,489	846,726
Sales to AEP Affiliates	70,902	67,473	145,770	151,690
Other Revenues - Affiliated	28,133	30,685	52,464	58,651
Other Revenues	2,816	3,055	7,247	5,904
TOTAL REVENUES	521,478	509,915	1,081,970	1,062,971
Expenses
Fuel and Other Consumables Used for Electric Generation	108,322	102,258	223,384	221,439
Purchased Electricity for Resale	31,796	31,444	61,088	61,211
Purchased Electricity from AEP Affiliates	82,967	68,496	162,551	150,746
Other Operation	132,846	162,978	266,057	293,659
Maintenance	47,536	49,633	98,536	98,077
Depreciation and Amortization	33,263	33,971	67,350	67,802
Taxes Other Than Income Taxes	20,397	18,995	42,659	40,027
TOTAL EXPENSES	457,127	467,775	921,625	932,961
OPERATING INCOME (LOSS)	64,351	42,140	160,345	130,010
Other Income (Expense):
Allowance for Equity Funds Used During Construction			7,440	9,002
Other Income	3,467	5,601	7,362	10,521
Interest Expense	(24,193)	(26,410)	(49,384)	(52,511)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	43,625	21,331	118,323	88,020
Income Tax Expense (Credit)	12,239	6,729	41,510	28,360
NET INCOME (LOSS)	31,386	14,602	76,813	59,660
Less: Preferred Stock Dividend Requirements	85	85	170	170
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	31,301	14,517	76,643	59,490
Ohio Power Co [Member]
Revenues
Utility Operations	558,873	490,422	1,185,679	1,034,122
Sales to AEP Affiliates	213,076	222,561	438,125	529,329
Other Revenues - Affiliated	4,507	5,155	11,525	11,729
Other Revenues	3,515	3,826	7,470	8,057
TOTAL REVENUES	779,971	721,964	1,642,799	1,583,237
Expenses
Fuel and Other Consumables Used for Electric Generation	246,973	220,174	541,456	551,191
Purchased Electricity for Resale	44,098	38,746	88,995	77,636
Purchased Electricity from AEP Affiliates	38,168	21,583	65,862	43,774
Other Operation	94,669	146,417	194,387	235,573
Maintenance	69,607	63,472	133,919	119,703
Depreciation and Amortization	92,167	89,861	184,153	179,222
Taxes Other Than Income Taxes	51,005	52,088	106,166	105,172
TOTAL EXPENSES	636,687	632,341	1,314,938	1,312,271
OPERATING INCOME (LOSS)	143,284	89,623	327,861	270,966
Other Income (Expense):
Interest Income	254	334	545	739
Carrying Costs Income	7,579	5,681	14,656	10,555
Allowance for Equity Funds Used During Construction	961	986	1,393	2,017
Interest Expense	(36,430)	(39,077)	(73,702)	(79,052)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	115,648	57,547	270,753	205,225
Income Tax Expense (Credit)	39,982	19,999	94,675	75,774
NET INCOME (LOSS)	75,666	37,548	176,078	129,451
Less: Preferred Stock Dividend Requirements	183	183	366	366
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	75,483	37,365	175,712	129,085
Public Service Co Of Oklahoma [Member]
Revenues
Utility Operations	322,028	322,394	606,615	550,945
Sales to AEP Affiliates	5,785	4,481	8,581	13,151
Other Revenues	775	811	1,395	1,345
TOTAL REVENUES	328,588	327,686	616,591	565,441
Expenses
Fuel and Other Consumables Used for Electric Generation	100,796	88,615	192,544	129,587
Purchased Electricity for Resale	46,018	53,555	87,197	98,535
Purchased Electricity from AEP Affiliates	9,111	10,471	25,722	21,463
Other Operation	48,736	70,837	93,140	120,499
Maintenance	25,152	27,038	45,873	57,977
Depreciation and Amortization	24,096	26,920	47,959	54,208
Taxes Other Than Income Taxes	10,494	10,985	21,090	21,285
TOTAL EXPENSES	264,403	288,421	513,525	503,554
OPERATING INCOME (LOSS)	64,185	39,265	103,066	61,887
Other Income (Expense):
Interest Income	28	93	80	275
Carrying Costs Income	1,876	819	2,523	1,686
Allowance for Equity Funds Used During Construction	284	119	650	366
Interest Expense	(14,258)	(15,765)	(30,196)	(33,128)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	52,115	24,531	76,123	31,086
Income Tax Expense (Credit)	20,555	9,042	29,174	11,458
NET INCOME (LOSS)	31,560	15,489	46,949	19,628
Less: Preferred Stock Dividend Requirements	49	49	98	103
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	31,511	15,440	46,851	19,525
Southwestern Electric Power Co [Member]
Revenues
Utility Operations	388,197	347,657	735,264	680,735
Sales to AEP Affiliates	10,671	13,231	26,250	22,564
Other Revenues	666	579	975	972
TOTAL REVENUES	399,534	361,467	762,489	704,271
Expenses
Fuel and Other Consumables Used for Electric Generation	139,713	135,051	273,725	257,939
Purchased Electricity for Resale	39,691	22,841	78,280	64,727
Purchased Electricity from AEP Affiliates	5,116	4,211	7,227	13,963
Other Operation	50,722	82,265	104,790	140,518
Maintenance	34,790	28,133	64,181	45,552
Depreciation and Amortization	32,718	29,868	66,008	63,111
Taxes Other Than Income Taxes	16,730	15,580	33,696	31,475
TOTAL EXPENSES	319,480	317,949	627,907	617,285
OPERATING INCOME (LOSS)	80,054	43,518	134,582	86,986
Other Income (Expense):
Interest Income	167	169	111	248
Allowance for Equity Funds Used During Construction	11,573	12,462	22,169	27,979
Interest Expense	(20,835)	(21,475)	(43,260)	(40,019)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	70,959	34,674	113,602	75,194
Income Tax Expense (Credit)	20,571	8,707	33,967	18,863
Equity Earnings (Loss) of Unconsolidated Subsidiaries	683	738	1,263	1,457
NET INCOME (LOSS)	51,071	26,705	80,898	57,788
Less: Net Income Attributable to Noncontrolling Interests	1,036	1,273	2,118	2,424
NET INCOME (LOSS) ATTRIBUTABLE TO SHAREHOLDERS	50,035	25,432	78,780	55,364
Less: Preferred Stock Dividend Requirements	57	57	114	114
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 49,978	$ 25,375	$ 78,666	$ 55,250