Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues
Utility Operations	$ 3,360,000,000	$ 3,186,000,000	$ 6,857,000,000	$ 6,592,000,000
Other Revenues	249,000,000	174,000,000	482,000,000	337,000,000
TOTAL REVENUES	3,609,000,000	3,360,000,000	7,339,000,000	6,929,000,000
Expenses
Fuel and Other Consumables Used for Electric Generation	980,000,000	895,000,000	2,036,000,000	1,909,000,000
Purchased Electricity for Resale	287,000,000	227,000,000	562,000,000	465,000,000
Other Operation	697,000,000	994,000,000	1,383,000,000	1,667,000,000
Maintenance	316,000,000	243,000,000	581,000,000	514,000,000
Depreciation and Amortization	410,000,000	405,000,000	813,000,000	813,000,000
Taxes Other Than Income Taxes	202,000,000	202,000,000	415,000,000	409,000,000
TOTAL EXPENSES	2,892,000,000	2,966,000,000	5,790,000,000	5,777,000,000
OPERATING INCOME (LOSS)	717,000,000	394,000,000	1,549,000,000	1,152,000,000
Other Income (Expense):
Interest and Investment Income	3,000,000	18,000,000	5,000,000	21,000,000
Carrying Costs Income	17,000,000	19,000,000	32,000,000	33,000,000
Allowance for Equity Funds Used During Construction	23,000,000	19,000,000	43,000,000	43,000,000
Interest Expense	(239,000,000)	(249,000,000)	(481,000,000)	(499,000,000)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	521,000,000	201,000,000	1,148,000,000	750,000,000
Income Tax Expense (Credit)	174,000,000	65,000,000	452,000,000	272,000,000
Equity Earnings (Loss) of Unconsolidated Subsidiaries	6,000,000	1,000,000	12,000,000	5,000,000
NET INCOME (LOSS)	353,000,000	137,000,000	708,000,000	483,000,000
Less: Net Income Attributable to Noncontrolling Interests	1,000,000	1,000,000	2,000,000	2,000,000
NET INCOME (LOSS) ATTRIBUTABLE TO SHAREHOLDERS	352,000,000	136,000,000	706,000,000	481,000,000
Less: Preferred Stock Dividend Requirements	0	0	1,000,000	1,000,000
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	352,000,000	136,000,000	705,000,000	480,000,000
Earnings Per Share
WEIGHTED AVERAGE NUMBER OF BASIC AEP COMMON SHARES OUTSTANDING	481,928,494	479,050,774	481,538,549	478,741,871
TOTAL BASIC EARNINGS PER SHARE ATTRIBUTABLE TO AEP COMMON SHAREHOLDERS	$ 0.73	$ 0.28	$ 1.46	$ 1.00
WEIGHTED AVERAGE NUMBER OF DILUTED AEP COMMON SHARES OUTSTANDING	482,203,255	479,176,543	481,786,698	479,012,304
Total Diluted Earnings Per Share Attributable to AEP Common Shareholders	$ 0.73	$ 0.28	$ 1.46	$ 1.00
CASH DIVIDENDS DECLARED PER SHARE	$ 0.46	$ 0.42	$ 0.92	$ 0.83
Appalachian Power Co [Member]
Revenues
Utility Operations	666,785,000	633,140,000	1,417,797,000	1,479,130,000
Sales to AEP Affiliates	82,531,000	67,365,000	161,222,000	146,136,000
Other Revenues	2,129,000	2,769,000	4,246,000	4,631,000
TOTAL REVENUES	751,445,000	703,274,000	1,583,265,000	1,629,897,000
Expenses
Fuel and Other Consumables Used for Electric Generation	184,698,000	169,616,000	365,279,000	350,256,000
Purchased Electricity for Resale	69,127,000	56,936,000	138,345,000	120,619,000
Purchased Electricity from AEP Affiliates	183,661,000	179,607,000	407,850,000	447,109,000
Other Operation	74,617,000	170,907,000	187,893,000	260,947,000
Maintenance	57,163,000	14,060,000	89,456,000	77,170,000
Depreciation and Amortization	67,644,000	73,160,000	136,743,000	150,590,000
Taxes Other Than Income Taxes	25,968,000	29,955,000	53,071,000	56,235,000
TOTAL EXPENSES	662,878,000	694,241,000	1,378,637,000	1,462,926,000
OPERATING INCOME (LOSS)	88,567,000	9,033,000	204,628,000	166,971,000
Other Income (Expense):
Interest Income	762,000	662,000	1,082,000	953,000
Carrying Costs Income	6,542,000	10,298,000	9,981,000	16,062,000
Allowance for Equity Funds Used During Construction	1,212,000	128,000	2,095,000	1,291,000
Interest Expense	(53,188,000)	(51,831,000)	(106,127,000)	(103,558,000)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	43,895,000	(31,710,000)	111,659,000	81,719,000
Income Tax Expense (Credit)	12,268,000	(12,091,000)	41,052,000	31,056,000
NET INCOME (LOSS)	31,627,000	(19,619,000)	70,607,000	50,663,000
Less: Preferred Stock Dividend Requirements	200,000	225,000	400,000	450,000
Capital Stock Expense				1,000
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	31,427,000	(19,844,000)	70,207,000	50,213,000
Columbus Southern Power Co [Member]
Revenues
Utility Operations	482,655,000	503,270,000	986,026,000	1,004,289,000
Sales to AEP Affiliates	38,421,000	20,090,000	79,146,000	35,922,000
Other Revenues	383,000	744,000	889,000	1,332,000
TOTAL REVENUES	521,459,000	524,104,000	1,066,061,000	1,041,543,000
Expenses
Fuel and Other Consumables Used for Electric Generation	93,760,000	105,290,000	206,673,000	219,731,000
Purchased Electricity for Resale	24,885,000	20,138,000	48,402,000	39,783,000
Purchased Electricity from AEP Affiliates	105,369,000	91,287,000	206,980,000	190,086,000
Other Operation	65,113,000	103,229,000	136,180,000	180,555,000
Maintenance	32,423,000	25,114,000	61,523,000	49,397,000
Depreciation and Amortization	37,531,000	37,602,000	78,957,000	75,089,000
Taxes Other Than Income Taxes	44,128,000	44,294,000	94,277,000	91,351,000
TOTAL EXPENSES	403,209,000	426,954,000	832,992,000	845,992,000
OPERATING INCOME (LOSS)	118,250,000	97,150,000	233,069,000	195,551,000
Other Income (Expense):
Interest Income	183,000	167,000	350,000	309,000
Carrying Costs Income	2,268,000	1,963,000	5,922,000	4,184,000
Allowance for Equity Funds Used During Construction	547,000	314,000	1,318,000	1,235,000
Interest Expense	(20,201,000)	(21,091,000)	(39,949,000)	(42,875,000)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	101,047,000	78,503,000	200,710,000	158,404,000
Income Tax Expense (Credit)	34,519,000	26,387,000	68,624,000	54,638,000
NET INCOME (LOSS)	66,528,000	52,116,000	132,086,000	103,766,000
Capital Stock Expense	25,000	40,000	50,000	79,000
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	66,503,000	52,076,000	132,036,000	103,687,000
Indiana Michigan Power Co [Member]
Revenues
Utility Operations	419,627,000	408,702,000	876,489,000	846,726,000
Sales to AEP Affiliates	70,902,000	67,473,000	145,770,000	151,690,000
Other Revenues - Affiliated	28,133,000	30,685,000	52,464,000	58,651,000
Other Revenues	2,816,000	3,055,000	7,247,000	5,904,000
TOTAL REVENUES	521,478,000	509,915,000	1,081,970,000	1,062,971,000
Expenses
Fuel and Other Consumables Used for Electric Generation	108,322,000	102,258,000	223,384,000	221,439,000
Purchased Electricity for Resale	31,796,000	31,444,000	61,088,000	61,211,000
Purchased Electricity from AEP Affiliates	82,967,000	68,496,000	162,551,000	150,746,000
Other Operation	132,846,000	162,978,000	266,057,000	293,659,000
Maintenance	47,536,000	49,633,000	98,536,000	98,077,000
Depreciation and Amortization	33,263,000	33,971,000	67,350,000	67,802,000
Taxes Other Than Income Taxes	20,397,000	18,995,000	42,659,000	40,027,000
TOTAL EXPENSES	457,127,000	467,775,000	921,625,000	932,961,000
OPERATING INCOME (LOSS)	64,351,000	42,140,000	160,345,000	130,010,000
Other Income (Expense):
Allowance for Equity Funds Used During Construction			7,440,000	9,002,000
Other Income	3,467,000	5,601,000	7,362,000	10,521,000
Interest Expense	(24,193,000)	(26,410,000)	(49,384,000)	(52,511,000)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	43,625,000	21,331,000	118,323,000	88,020,000
Income Tax Expense (Credit)	12,239,000	6,729,000	41,510,000	28,360,000
NET INCOME (LOSS)	31,386,000	14,602,000	76,813,000	59,660,000
Less: Preferred Stock Dividend Requirements	85,000	85,000	170,000	170,000
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	31,301,000	14,517,000	76,643,000	59,490,000
Ohio Power Co [Member]
Revenues
Utility Operations	558,873,000	490,422,000	1,185,679,000	1,034,122,000
Sales to AEP Affiliates	213,076,000	222,561,000	438,125,000	529,329,000
Other Revenues - Affiliated	4,507,000	5,155,000	11,525,000	11,729,000
Other Revenues	3,515,000	3,826,000	7,470,000	8,057,000
TOTAL REVENUES	779,971,000	721,964,000	1,642,799,000	1,583,237,000
Expenses
Fuel and Other Consumables Used for Electric Generation	246,973,000	220,174,000	541,456,000	551,191,000
Purchased Electricity for Resale	44,098,000	38,746,000	88,995,000	77,636,000
Purchased Electricity from AEP Affiliates	38,168,000	21,583,000	65,862,000	43,774,000
Other Operation	94,669,000	146,417,000	194,387,000	235,573,000
Maintenance	69,607,000	63,472,000	133,919,000	119,703,000
Depreciation and Amortization	92,167,000	89,861,000	184,153,000	179,222,000
Taxes Other Than Income Taxes	51,005,000	52,088,000	106,166,000	105,172,000
TOTAL EXPENSES	636,687,000	632,341,000	1,314,938,000	1,312,271,000
OPERATING INCOME (LOSS)	143,284,000	89,623,000	327,861,000	270,966,000
Other Income (Expense):
Interest Income	254,000	334,000	545,000	739,000
Carrying Costs Income	7,579,000	5,681,000	14,656,000	10,555,000
Allowance for Equity Funds Used During Construction	961,000	986,000	1,393,000	2,017,000
Interest Expense	(36,430,000)	(39,077,000)	(73,702,000)	(79,052,000)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	115,648,000	57,547,000	270,753,000	205,225,000
Income Tax Expense (Credit)	39,982,000	19,999,000	94,675,000	75,774,000
NET INCOME (LOSS)	75,666,000	37,548,000	176,078,000	129,451,000
Less: Preferred Stock Dividend Requirements	183,000	183,000	366,000	366,000
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	75,483,000	37,365,000	175,712,000	129,085,000
Public Service Co Of Oklahoma [Member]
Revenues
Utility Operations	322,028,000	322,394,000	606,615,000	550,945,000
Sales to AEP Affiliates	5,785,000	4,481,000	8,581,000	13,151,000
Other Revenues	775,000	811,000	1,395,000	1,345,000
TOTAL REVENUES	328,588,000	327,686,000	616,591,000	565,441,000
Expenses
Fuel and Other Consumables Used for Electric Generation	100,796,000	88,615,000	192,544,000	129,587,000
Purchased Electricity for Resale	46,018,000	53,555,000	87,197,000	98,535,000
Purchased Electricity from AEP Affiliates	9,111,000	10,471,000	25,722,000	21,463,000
Other Operation	48,736,000	70,837,000	93,140,000	120,499,000
Maintenance	25,152,000	27,038,000	45,873,000	57,977,000
Depreciation and Amortization	24,096,000	26,920,000	47,959,000	54,208,000
Taxes Other Than Income Taxes	10,494,000	10,985,000	21,090,000	21,285,000
TOTAL EXPENSES	264,403,000	288,421,000	513,525,000	503,554,000
OPERATING INCOME (LOSS)	64,185,000	39,265,000	103,066,000	61,887,000
Other Income (Expense):
Interest Income	28,000	93,000	80,000	275,000
Carrying Costs Income	1,876,000	819,000	2,523,000	1,686,000
Allowance for Equity Funds Used During Construction	284,000	119,000	650,000	366,000
Interest Expense	(14,258,000)	(15,765,000)	(30,196,000)	(33,128,000)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	52,115,000	24,531,000	76,123,000	31,086,000
Income Tax Expense (Credit)	20,555,000	9,042,000	29,174,000	11,458,000
NET INCOME (LOSS)	31,560,000	15,489,000	46,949,000	19,628,000
Less: Preferred Stock Dividend Requirements	49,000	49,000	98,000	103,000
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	31,511,000	15,440,000	46,851,000	19,525,000
Southwestern Electric Power Co [Member]
Revenues
Utility Operations	388,197,000	347,657,000	735,264,000	680,735,000
Sales to AEP Affiliates	10,671,000	13,231,000	26,250,000	22,564,000
Other Revenues	666,000	579,000	975,000	972,000
TOTAL REVENUES	399,534,000	361,467,000	762,489,000	704,271,000
Expenses
Fuel and Other Consumables Used for Electric Generation	139,713,000	135,051,000	273,725,000	257,939,000
Purchased Electricity for Resale	39,691,000	22,841,000	78,280,000	64,727,000
Purchased Electricity from AEP Affiliates	5,116,000	4,211,000	7,227,000	13,963,000
Other Operation	50,722,000	82,265,000	104,790,000	140,518,000
Maintenance	34,790,000	28,133,000	64,181,000	45,552,000
Depreciation and Amortization	32,718,000	29,868,000	66,008,000	63,111,000
Taxes Other Than Income Taxes	16,730,000	15,580,000	33,696,000	31,475,000
TOTAL EXPENSES	319,480,000	317,949,000	627,907,000	617,285,000
OPERATING INCOME (LOSS)	80,054,000	43,518,000	134,582,000	86,986,000
Other Income (Expense):
Interest Income	167,000	169,000	111,000	248,000
Allowance for Equity Funds Used During Construction	11,573,000	12,462,000	22,169,000	27,979,000
Interest Expense	(20,835,000)	(21,475,000)	(43,260,000)	(40,019,000)
INCOME BEFORE INCOME TAX EXPENSE (CREDIT) AND EQUITY EARNINGS (LOSS)	70,959,000	34,674,000	113,602,000	75,194,000
Income Tax Expense (Credit)	20,571,000	8,707,000	33,967,000	18,863,000
Equity Earnings (Loss) of Unconsolidated Subsidiaries	683,000	738,000	1,263,000	1,457,000
NET INCOME (LOSS)	51,071,000	26,705,000	80,898,000	57,788,000
Less: Net Income Attributable to Noncontrolling Interests	1,036,000	1,273,000	2,118,000	2,424,000
NET INCOME (LOSS) ATTRIBUTABLE TO SHAREHOLDERS	50,035,000	25,432,000	78,780,000	55,364,000
Less: Preferred Stock Dividend Requirements	57,000	57,000	114,000	114,000
EARNINGS ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 49,978,000	$ 25,375,000	$ 78,666,000	$ 55,250,000

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