Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013		Dec. 31, 2012
Current Assets
Cash and Cash Equivalents	$ 147,000,000		$ 279,000,000
Other Temporary Investments	288,000,000		324,000,000
Accounts Receivable:
Customers	657,000,000		685,000,000
Accrued Unbilled Revenues	164,000,000		195,000,000
Pledged Accounts Receivable - AEP Credit	982,000,000		856,000,000
Miscellaneous	107,000,000		171,000,000
Allowance for Uncollectible Accounts	(54,000,000)		(36,000,000)
Total Accounts Receivable	1,856,000,000		1,871,000,000
Fuel	748,000,000		844,000,000
Materials and Supplies	692,000,000		675,000,000
Risk Management Assets	171,000,000		191,000,000
Regulatory Asset for Under-Recovered Fuel Costs	81,000,000		88,000,000
Margin Deposits	72,000,000		76,000,000
Prepayments and Other Current Assets	262,000,000		241,000,000
TOTAL CURRENT ASSETS	4,317,000,000		4,589,000,000
Property, Plant and Equipment
Generation	26,172,000,000		26,279,000,000
Transmission	10,256,000,000		9,846,000,000
Distribution	16,067,000,000		15,565,000,000
Other Property, Plant and Equipment	4,060,000,000		3,945,000,000
Construction Work in Progress	2,489,000,000		1,819,000,000
Total Property, Plant and Equipment	59,044,000,000		57,454,000,000
Accumulated Depreciation and Amortization	19,174,000,000		18,691,000,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	39,870,000,000		38,763,000,000
Other Noncurrent Assets
Regulatory Assets	5,038,000,000		5,106,000,000
Securitized Transition Assets	2,080,000,000		2,117,000,000
Spent Nuclear Fuel and Decommissioning Trusts	1,839,000,000		1,706,000,000
Goodwill	91,000,000		91,000,000
Long-term Risk Management Assets	314,000,000		368,000,000
Deferred Charges and Other Noncurrent Assets	1,414,000,000		1,627,000,000
TOTAL OTHER NONCURRENT ASSETS	10,776,000,000		11,015,000,000
TOTAL ASSETS	54,963,000,000		54,367,000,000
Current Liabilities
Accounts Payable	1,044,000,000		1,169,000,000
Short-term Debt:
Securitized Debt for Receivable - AEP Credit	700,000,000	[1]	657,000,000	[1]
Other Short-term Debt	518,000,000		324,000,000
Total Short-term Debt	1,218,000,000		981,000,000
Long-term Debt Due Within One Year	1,366,000,000		2,171,000,000
Risk Management Liabilities	102,000,000		155,000,000
Customer Deposits	298,000,000		316,000,000
Accrued Taxes	590,000,000		747,000,000
Accrued Interest	219,000,000		269,000,000
Regulatory Liability for Over-Recovered Fuel Costs	14,000,000		47,000,000
Other Current Liabilities	841,000,000		968,000,000
TOTAL CURRENT LIABILITIES	5,692,000,000		6,823,000,000
Noncurrent Liabilities
Long-term Debt	16,202,000,000		15,586,000,000
Long-term Risk Management Liabilities	182,000,000		214,000,000
Deferred Income Taxes	9,871,000,000		9,252,000,000
Regulatory Liabilities and Deferred Investment Tax Credits	3,640,000,000		3,544,000,000
Asset Retirement Obligations	1,736,000,000		1,696,000,000
Employee Benefits and Pension Obligations	986,000,000		1,075,000,000
Deferred Credits and Other Noncurrent Liabilities	891,000,000		940,000,000
TOTAL NONCURRENT LIABILITIES	33,508,000,000		32,307,000,000
TOTAL LIABILITIES	39,200,000,000		39,130,000,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	3,299,000,000		3,289,000,000
Paid-in Capital	6,105,000,000		6,049,000,000
Retained Earnings	6,664,000,000		6,236,000,000
Accumulated Other Comprehensive Income (Loss)	(306,000,000)		(337,000,000)
TOTAL COMMON SHAREHOLDER'S EQUITY	15,762,000,000		15,237,000,000
Noncontrolling Interests	1,000,000		0
TOTAL EQUITY	15,763,000,000		15,237,000,000
TOTAL LIABILITIES AND EQUITY	54,963,000,000		54,367,000,000
Appalachian Power Co [Member]
Current Assets
Cash and Cash Equivalents	4,130,000		3,576,000
Advances to Affiliates	23,424,000		23,024,000
Accounts Receivable:
Customers	130,168,000		158,380,000
Affiliated Companies	83,218,000		96,213,000
Accrued Unbilled Revenues	46,592,000		70,825,000
Miscellaneous	1,744,000		1,344,000
Allowance for Uncollectible Accounts	(2,361,000)		(6,087,000)
Total Accounts Receivable	259,361,000		320,675,000
Fuel	177,586,000		185,813,000
Materials and Supplies	108,341,000		105,208,000
Risk Management Assets	24,550,000		30,960,000
Accrued Tax Benefits	42,735,000		50,032,000
Regulatory Asset for Under-Recovered Fuel Costs	48,880,000		74,906,000
Prepayments and Other Current Assets	15,986,000		18,690,000
TOTAL CURRENT ASSETS	704,993,000		812,884,000
Property, Plant and Equipment
Generation	5,688,679,000		5,632,665,000
Transmission	2,066,088,000		2,042,144,000
Distribution	3,075,781,000		2,991,898,000
Other Property, Plant and Equipment	386,192,000		373,327,000
Construction Work in Progress	250,040,000		266,247,000
Total Property, Plant and Equipment	11,466,780,000		11,306,281,000
Accumulated Depreciation and Amortization	3,307,175,000		3,196,639,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	8,159,605,000		8,109,642,000
Other Noncurrent Assets
Regulatory Assets	1,339,713,000		1,435,704,000
Long-term Risk Management Assets	20,839,000		34,360,000
Deferred Charges and Other Noncurrent Assets	96,016,000		115,078,000
TOTAL OTHER NONCURRENT ASSETS	1,456,568,000		1,585,142,000
TOTAL ASSETS	10,321,166,000		10,507,668,000
Current Liabilities
Advances from Affiliates	276,776,000		173,965,000
Accounts Payable	141,492,000		195,203,000
Affiliated Companies	98,211,000		137,088,000
Short-term Debt:
Long-term Debt Due Within One Year	229,682,000		574,679,000
Risk Management Liabilities	11,641,000		16,698,000
Customer Deposits	66,377,000		67,339,000
Deferred Income Taxes	21,263,000		11,715,000
Accrued Taxes	66,994,000		74,967,000
Accrued Interest	58,381,000		51,442,000
Other Current Liabilities	88,687,000		110,657,000
TOTAL CURRENT LIABILITIES	1,059,504,000		1,413,753,000
Noncurrent Liabilities
Long-term Debt	3,198,235,000		3,127,763,000
Long-term Risk Management Liabilities	12,081,000		18,476,000
Deferred Income Taxes	1,992,385,000		1,928,683,000
Regulatory Liabilities and Deferred Investment Tax Credits	627,360,000		607,680,000
Employee Benefits and Pension Obligations	194,237,000		204,207,000
Deferred Credits and Other Noncurrent Liabilities	149,323,000		154,544,000
TOTAL NONCURRENT LIABILITIES	6,173,621,000		6,041,353,000
TOTAL LIABILITIES	7,233,125,000		7,455,106,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	260,458,000		260,458,000
Paid-in Capital	1,573,752,000		1,573,752,000
Retained Earnings	1,281,285,000		1,248,250,000
Accumulated Other Comprehensive Income (Loss)	(27,454,000)		(29,898,000)
TOTAL EQUITY	3,088,041,000		3,052,562,000
TOTAL LIABILITIES AND EQUITY	10,321,166,000		10,507,668,000
Indiana Michigan Power Co [Member]
Current Assets
Cash and Cash Equivalents	1,798,000		1,562,000
Advances to Affiliates	322,476,000		116,977,000
Accounts Receivable:
Customers	52,482,000		61,776,000
Affiliated Companies	67,744,000		79,886,000
Accrued Unbilled Revenues	16,469,000		11,218,000
Miscellaneous	5,291,000		12,260,000
Allowance for Uncollectible Accounts	(186,000)		(229,000)
Total Accounts Receivable	141,800,000		164,911,000
Fuel	71,372,000		53,406,000
Materials and Supplies	187,040,000		195,147,000
Risk Management Assets	16,150,000		26,974,000
Deferred Cook Plant Fire Costs	0		80,000,000
Prepayments and Other Current Assets	39,328,000		83,270,000
TOTAL CURRENT ASSETS	779,964,000		722,247,000
Property, Plant and Equipment
Generation	4,177,462,000		4,062,733,000
Transmission	1,311,364,000		1,278,236,000
Distribution	1,594,559,000		1,553,358,000
Other Property, Plant and Equipment	729,516,000		725,313,000
Construction Work in Progress	388,835,000		341,063,000
Total Property, Plant and Equipment	8,201,736,000		7,960,703,000
Accumulated Depreciation and Amortization	3,301,177,000		3,232,135,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	4,900,559,000		4,728,568,000
Other Noncurrent Assets
Regulatory Assets	567,402,000		540,019,000
Spent Nuclear Fuel and Decommissioning Trusts	1,839,118,000		1,705,772,000
Long-term Risk Management Assets	13,733,000		23,569,000
Deferred Charges and Other Noncurrent Assets	87,016,000		111,364,000
TOTAL OTHER NONCURRENT ASSETS	2,507,269,000		2,380,724,000
TOTAL ASSETS	8,187,792,000		7,831,539,000
Current Liabilities
Accounts Payable	120,821,000		208,701,000
Affiliated Companies	64,779,000		104,631,000
Short-term Debt:
Long-term Debt Due Within One Year	224,859,000		203,953,000
Risk Management Liabilities	9,268,000		31,517,000
Customer Deposits	30,702,000		31,142,000
Accrued Taxes	45,223,000		67,675,000
Accrued Interest	18,855,000		26,859,000
Other Current Liabilities	131,823,000		122,053,000
TOTAL CURRENT LIABILITIES	646,330,000		796,531,000
Noncurrent Liabilities
Long-term Debt	2,046,754,000		1,853,713,000
Long-term Risk Management Liabilities	8,307,000		13,898,000
Deferred Income Taxes	1,120,947,000		1,019,160,000
Regulatory Liabilities and Deferred Investment Tax Credits	1,042,494,000		948,292,000
Asset Retirement Obligations	1,234,540,000		1,192,313,000
Deferred Credits and Other Noncurrent Liabilities	185,841,000		203,857,000
TOTAL NONCURRENT LIABILITIES	5,638,883,000		5,231,233,000
TOTAL LIABILITIES	6,285,213,000		6,027,764,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	56,584,000		56,584,000
Paid-in Capital	980,896,000		980,896,000
Retained Earnings	889,769,000		795,178,000
Accumulated Other Comprehensive Income (Loss)	(24,670,000)		(28,883,000)
TOTAL EQUITY	1,902,579,000		1,803,775,000
TOTAL LIABILITIES AND EQUITY	8,187,792,000		7,831,539,000
Ohio Power Co [Member]
Current Assets
Cash and Cash Equivalents	4,341,000		3,640,000
Advances to Affiliates	10,126,000		116,422,000
Accounts Receivable:
Customers	83,382,000		135,954,000
Affiliated Companies	147,471,000		176,590,000
Accrued Unbilled Revenues	38,753,000		57,887,000
Miscellaneous	6,683,000		9,327,000
Allowance for Uncollectible Accounts	(26,966,000)		(129,000)
Total Accounts Receivable	249,323,000		379,629,000
Fuel	251,888,000		328,840,000
Materials and Supplies	173,397,000		186,269,000
Risk Management Assets	34,178,000		44,313,000
Accrued Tax Benefits	947,000		17,785,000
Prepayments and Other Current Assets	50,199,000		26,807,000
TOTAL CURRENT ASSETS	774,399,000		1,103,705,000
Property, Plant and Equipment
Generation	8,392,967,000		8,673,296,000
Transmission	2,034,958,000		2,013,737,000
Distribution	3,815,303,000		3,722,745,000
Other Property, Plant and Equipment	566,007,000		571,154,000
Construction Work in Progress	440,199,000		354,497,000
Total Property, Plant and Equipment	15,249,434,000		15,335,429,000
Accumulated Depreciation and Amortization	5,220,979,000		5,242,805,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	10,028,455,000		10,092,624,000
Other Noncurrent Assets
Regulatory Assets	1,455,176,000		1,420,966,000
Securitized Transition Assets	136,566,000		0
Long-term Risk Management Assets	28,594,000		48,288,000
Deferred Charges and Other Noncurrent Assets	133,024,000		320,026,000
TOTAL OTHER NONCURRENT ASSETS	1,753,360,000		1,789,280,000
TOTAL ASSETS	12,556,214,000		12,985,609,000
Current Liabilities
Advances from Affiliates	1,063,000		0
Accounts Payable	249,663,000		276,220,000
Affiliated Companies	99,322,000		153,222,000
Short-term Debt:
Long-term Debt Due Within One Year	553,516,000		856,000,000
Risk Management Liabilities	16,431,000		24,155,000
Accrued Taxes	261,496,000		467,309,000
Accrued Interest	54,603,000		63,560,000
Other Current Liabilities	201,018,000		263,638,000
TOTAL CURRENT LIABILITIES	1,437,112,000		2,104,104,000
Noncurrent Liabilities
Long-term Debt	2,945,058,000		2,804,440,000
Long-term Debt - Affiliated	200,000,000		200,000,000
Long-term Risk Management Liabilities	16,577,000		25,965,000
Deferred Income Taxes	2,489,349,000		2,345,850,000
Regulatory Liabilities and Deferred Investment Tax Credits	444,216,000		451,071,000
Deferred Credits and Other Noncurrent Liabilities	436,743,000		528,470,000
TOTAL NONCURRENT LIABILITIES	6,531,943,000		6,355,796,000
TOTAL LIABILITIES	7,969,055,000		8,459,900,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	321,201,000		321,201,000
Paid-in Capital	1,744,099,000		1,744,099,000
Retained Earnings	2,658,562,000		2,626,134,000
Accumulated Other Comprehensive Income (Loss)	(136,703,000)		(165,725,000)
TOTAL EQUITY	4,587,159,000		4,525,709,000
TOTAL LIABILITIES AND EQUITY	12,556,214,000		12,985,609,000
Public Service Co Of Oklahoma [Member]
Current Assets
Cash and Cash Equivalents	2,000,000		1,367,000
Advances to Affiliates	19,442,000		10,558,000
Accounts Receivable:
Customers	30,787,000		31,047,000
Affiliated Companies	20,448,000		24,751,000
Miscellaneous	4,409,000		6,216,000
Allowance for Uncollectible Accounts	(956,000)		(872,000)
Total Accounts Receivable	54,688,000		61,142,000
Fuel	18,202,000		22,085,000
Materials and Supplies	52,190,000		52,183,000
Risk Management Assets	852,000		509,000
Deferred Income Tax Benefits	5,713,000		7,183,000
Accrued Tax Benefits	10,628,000		11,812,000
Prepayments and Other Current Assets	6,908,000		7,633,000
TOTAL CURRENT ASSETS	170,623,000		174,472,000
Property, Plant and Equipment
Generation	1,381,290,000		1,346,530,000
Transmission	724,125,000		706,917,000
Distribution	1,937,654,000		1,859,557,000
Other Property, Plant and Equipment	219,015,000		210,549,000
Construction Work in Progress	118,879,000		95,170,000
Total Property, Plant and Equipment	4,380,963,000		4,218,723,000
Accumulated Depreciation and Amortization	1,321,843,000		1,278,941,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	3,059,120,000		2,939,782,000
Other Noncurrent Assets
Regulatory Assets	185,856,000		202,328,000
Long-term Risk Management Assets	149,000		31,000
Deferred Charges and Other Noncurrent Assets	17,217,000		8,560,000
TOTAL OTHER NONCURRENT ASSETS	203,222,000		210,919,000
TOTAL ASSETS	3,432,965,000		3,325,173,000
Current Liabilities
Accounts Payable	106,997,000		87,050,000
Affiliated Companies	32,646,000		36,189,000
Short-term Debt:
Long-term Debt Due Within One Year	34,111,000		764,000
Risk Management Liabilities	1,388,000		5,848,000
Customer Deposits	45,653,000		46,533,000
Accrued Taxes	55,923,000		28,024,000
Accrued Interest	15,383,000		12,654,000
Regulatory Liability for Over-Recovered Fuel Costs	144,000		7,945,000
Other Current Liabilities	47,311,000		50,684,000
TOTAL CURRENT LIABILITIES	339,556,000		275,691,000
Noncurrent Liabilities
Long-term Debt	915,715,000		949,107,000
Long-term Risk Management Liabilities	0		31,000
Deferred Income Taxes	814,719,000		740,676,000
Regulatory Liabilities and Deferred Investment Tax Credits	324,329,000		344,817,000
Employee Benefits and Pension Obligations	33,884,000		34,906,000
Deferred Credits and Other Noncurrent Liabilities	37,106,000		63,667,000
TOTAL NONCURRENT LIABILITIES	2,125,753,000		2,133,204,000
TOTAL LIABILITIES	2,465,309,000		2,408,895,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	157,230,000		157,230,000
Paid-in Capital	364,037,000		364,037,000
Retained Earnings	440,501,000		388,530,000
Accumulated Other Comprehensive Income (Loss)	5,888,000		6,481,000
TOTAL EQUITY	967,656,000		916,278,000
TOTAL LIABILITIES AND EQUITY	3,432,965,000		3,325,173,000
Southwestern Electric Power Co [Member]
Current Assets
Cash and Cash Equivalents	17,651,000		2,036,000
Advances to Affiliates	18,634,000		153,829,000
Accounts Receivable:
Customers	59,408,000		39,349,000
Affiliated Companies	26,597,000		26,288,000
Miscellaneous	22,350,000		35,514,000
Allowance for Uncollectible Accounts	(2,034,000)		(2,041,000)
Total Accounts Receivable	106,321,000		99,110,000
Fuel	121,443,000		134,234,000
Materials and Supplies	73,365,000		69,212,000
Risk Management Assets	402,000		695,000
Deferred Income Tax Benefits	99,362,000		101,403,000
Accrued Tax Benefits	7,015,000		9,616,000
Regulatory Asset for Under-Recovered Fuel Costs	21,430,000		8,527,000
Prepayments and Other Current Assets	18,673,000		16,489,000
TOTAL CURRENT ASSETS	484,296,000		595,151,000
Property, Plant and Equipment
Generation	3,813,995,000		3,888,230,000
Transmission	1,141,848,000		1,115,795,000
Distribution	1,807,252,000		1,758,988,000
Other Property, Plant and Equipment	699,918,000		688,254,000
Construction Work in Progress	223,860,000		99,783,000
Total Property, Plant and Equipment	7,686,873,000		7,551,050,000
Accumulated Depreciation and Amortization	2,378,225,000		2,284,258,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	5,308,648,000		5,266,792,000
Other Noncurrent Assets
Regulatory Assets	375,581,000		403,278,000
Long-term Risk Management Assets	21,000		0
Deferred Charges and Other Noncurrent Assets	81,848,000		76,432,000
TOTAL OTHER NONCURRENT ASSETS	457,450,000		479,710,000
TOTAL ASSETS	6,250,394,000		6,341,653,000
Current Liabilities
Accounts Payable	132,265,000		126,768,000
Affiliated Companies	39,657,000		62,835,000
Short-term Debt:
Other Short-term Debt	0		2,603,000
Long-term Debt Due Within One Year	3,250,000		3,250,000
Risk Management Liabilities	296,000		1,128,000
Customer Deposits	55,832,000		69,393,000
Accrued Taxes	64,436,000		31,532,000
Accrued Interest	19,234,000		43,950,000
Obligations Under Capital Leases	17,905,000		17,599,000
Regulatory Liability for Over-Recovered Fuel Costs	5,562,000		16,761,000
Other Current Liabilities	63,921,000		64,997,000
TOTAL CURRENT LIABILITIES	402,358,000		440,816,000
Noncurrent Liabilities
Long-term Debt	2,039,994,000		2,042,978,000
Deferred Income Taxes	1,095,691,000		1,075,551,000
Regulatory Liabilities and Deferred Investment Tax Credits	471,953,000		476,471,000
Asset Retirement Obligations	87,565,000		78,017,000
Employee Benefits and Pension Obligations	31,129,000		38,240,000
Obligations Under Capital Leases	104,175,000		114,161,000
Deferred Credits and Other Noncurrent Liabilities	41,769,000		53,946,000
TOTAL NONCURRENT LIABILITIES	3,872,276,000		3,879,364,000
TOTAL LIABILITIES	4,274,634,000		4,320,180,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	135,660,000		135,660,000
Paid-in Capital	674,606,000		674,606,000
Retained Earnings	1,181,547,000		1,228,806,000
Accumulated Other Comprehensive Income (Loss)	(16,376,000)		(17,860,000)
TOTAL COMMON SHAREHOLDER'S EQUITY	1,975,437,000		2,021,212,000
Noncontrolling Interests	323,000		261,000
TOTAL EQUITY	1,975,760,000		2,021,473,000
TOTAL LIABILITIES AND EQUITY	$ 6,250,394,000		$ 6,341,653,000

[1] Amount of securitized debt for receivables as accounted for under the ''Transfers and Servicing'' accounting guidance.