Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014		Dec. 31, 2013
Current Assets
Cash and Cash Equivalents	$ 292,000,000		$ 118,000,000
Other Temporary Investments	310,000,000		353,000,000
Accounts Receivable:
Customers	785,000,000		746,000,000
Accrued Unbilled Revenues	143,000,000		157,000,000
Pledged Accounts Receivable - AEP Credit	1,015,000,000		945,000,000
Miscellaneous	66,000,000		72,000,000
Allowance for Uncollectible Accounts	(66,000,000)		(60,000,000)
Total Accounts Receivable	1,943,000,000		1,860,000,000
Fuel	490,000,000		701,000,000
Materials and Supplies	724,000,000		722,000,000
Risk Management Assets	125,000,000		160,000,000
Regulatory Asset for Under-Recovered Fuel Costs	175,000,000		80,000,000
Margin Deposits	117,000,000		70,000,000
Prepayments and Other Current Assets	159,000,000		246,000,000
TOTAL CURRENT ASSETS	4,335,000,000		4,310,000,000
Property, Plant and Equipment
Generation	25,174,000,000		25,074,000,000
Transmission	11,014,000,000		10,893,000,000
Distribution	16,518,000,000		16,377,000,000
Other Property, Plant and Equipment	5,552,000,000		5,470,000,000
Construction Work in Progress	2,836,000,000		2,471,000,000
Total Property, Plant and Equipment	61,094,000,000		60,285,000,000
Accumulated Depreciation and Amortization	19,564,000,000		19,288,000,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	41,530,000,000		40,997,000,000
Other Noncurrent Assets
Regulatory Assets	4,384,000,000		4,376,000,000
Securitized Assets	2,308,000,000		2,373,000,000
Spent Nuclear Fuel and Decommissioning Trusts	1,962,000,000		1,932,000,000
Goodwill	91,000,000		91,000,000
Long-term Risk Management Assets	266,000,000		297,000,000
Deferred Charges and Other Noncurrent Assets	2,162,000,000		2,038,000,000
TOTAL OTHER NONCURRENT ASSETS	11,173,000,000		11,107,000,000
TOTAL ASSETS	57,038,000,000		56,414,000,000
Current Liabilities
Accounts Payable	1,213,000,000		1,266,000,000
Short-term Debt:
Securitized Debt for Receivable - AEP Credit	700,000,000	[1]	700,000,000	[1]
Other Short-term Debt	632,000,000		57,000,000
Total Short-term Debt	1,332,000,000		757,000,000
Long-term Debt Due Within One Year	1,612,000,000		1,549,000,000
Risk Management Liabilities	60,000,000		90,000,000
Customer Deposits	302,000,000		299,000,000
Accrued Taxes	803,000,000		822,000,000
Accrued Interest	220,000,000		245,000,000
Regulatory Liability for Over-Recovered Fuel Costs	60,000,000		119,000,000
Other Current Liabilities	917,000,000		965,000,000
TOTAL CURRENT LIABILITIES	6,519,000,000		6,112,000,000
Noncurrent Liabilities
Long-term Debt	16,475,000,000		16,828,000,000
Long-term Risk Management Liabilities	137,000,000		177,000,000
Deferred Income Taxes	10,446,000,000		10,300,000,000
Regulatory Liabilities and Deferred Investment Tax Credits	3,765,000,000		3,694,000,000
Asset Retirement Obligations	1,853,000,000		1,835,000,000
Employee Benefits and Pension Obligations	456,000,000		415,000,000
Deferred Credits and Other Noncurrent Liabilities	968,000,000		967,000,000
TOTAL NONCURRENT LIABILITIES	34,100,000,000		34,216,000,000
TOTAL LIABILITIES	40,619,000,000		40,328,000,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	3,305,000,000		3,303,000,000
Paid-in Capital	6,144,000,000		6,131,000,000
Retained Earnings	7,076,000,000		6,766,000,000
Accumulated Other Comprehensive Income (Loss)	(109,000,000)		(115,000,000)
TOTAL COMMON SHAREHOLDER'S EQUITY	16,416,000,000		16,085,000,000
Noncontrolling Interests	3,000,000		1,000,000
TOTAL EQUITY	16,419,000,000		16,086,000,000
TOTAL LIABILITIES AND EQUITY	57,038,000,000		56,414,000,000
Appalachian Power Co [Member]
Current Assets
Cash and Cash Equivalents	4,758,000		2,745,000
Advances to Affiliates	245,516,000		92,485,000
Accounts Receivable:
Customers	150,954,000		142,010,000
Affiliated Companies	72,283,000		113,793,000
Accrued Unbilled Revenues	46,631,000		55,930,000
Miscellaneous	472,000		412,000
Allowance for Uncollectible Accounts	(3,517,000)		(2,443,000)
Total Accounts Receivable	266,823,000		309,702,000
Fuel	103,983,000		191,811,000
Materials and Supplies	128,614,000		128,843,000
Risk Management Assets	15,972,000		21,171,000
Regulatory Asset for Under-Recovered Fuel Costs	79,498,000		39,811,000
Prepayments and Other Current Assets	33,677,000		16,472,000
TOTAL CURRENT ASSETS	878,841,000		803,040,000
Property, Plant and Equipment
Generation	6,752,422,000		6,745,172,000
Transmission	2,173,839,000		2,160,660,000
Distribution	3,161,917,000		3,139,150,000
Other Property, Plant and Equipment	365,750,000		357,517,000
Construction Work in Progress	217,713,000		184,701,000
Total Property, Plant and Equipment	12,671,641,000		12,587,200,000
Accumulated Depreciation and Amortization	3,679,394,000		3,617,990,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	8,992,247,000		8,969,210,000
Other Noncurrent Assets
Regulatory Assets	1,006,426,000		1,003,890,000
Securitized Assets	364,984,000		369,355,000
Long-term Risk Management Assets	14,013,000		16,948,000
Deferred Charges and Other Noncurrent Assets	157,592,000		148,205,000
TOTAL OTHER NONCURRENT ASSETS	1,543,015,000		1,538,398,000
TOTAL ASSETS	11,414,103,000		11,310,648,000
Current Liabilities
Accounts Payable	188,773,000		169,184,000
Affiliated Companies	87,447,000		120,789,000
Short-term Debt:
Long-term Debt Due Within One Year	553,399,000		342,360,000
Risk Management Liabilities	4,636,000		8,892,000
Customer Deposits	69,180,000		66,040,000
Deferred Income Taxes	12,208,000		6,899,000
Accrued Taxes	115,557,000		114,699,000
Accrued Interest	62,397,000		51,899,000
Regulatory Liability for Over-Recovered Fuel Costs	45,144,000		107,048,000
Other Current Liabilities	76,445,000		97,566,000
TOTAL CURRENT LIABILITIES	1,215,186,000		1,085,376,000
Noncurrent Liabilities
Long-term Debt	3,555,117,000		3,765,997,000
Long-term Debt - Affiliated	86,000,000		86,000,000
Long-term Risk Management Liabilities	7,929,000		10,241,000
Deferred Income Taxes	2,297,662,000		2,232,441,000
Regulatory Liabilities and Deferred Investment Tax Credits	648,895,000		631,225,000
Employee Benefits and Pension Obligations	105,927,000		82,264,000
Deferred Credits and Other Noncurrent Liabilities	186,191,000		187,672,000
TOTAL NONCURRENT LIABILITIES	6,887,721,000		6,995,840,000
TOTAL LIABILITIES	8,102,907,000		8,081,216,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	260,458,000		260,458,000
Paid-in Capital	1,809,562,000		1,809,562,000
Retained Earnings	1,238,312,000		1,156,461,000
Accumulated Other Comprehensive Income (Loss)	2,864,000		2,951,000
TOTAL EQUITY	3,311,196,000		3,229,432,000
TOTAL LIABILITIES AND EQUITY	11,414,103,000		11,310,648,000
Indiana Michigan Power Co [Member]
Current Assets
Cash and Cash Equivalents	2,288,000		1,317,000
Advances to Affiliates	59,162,000		55,863,000
Accounts Receivable:
Customers	52,471,000		63,011,000
Affiliated Companies	71,359,000		78,282,000
Accrued Unbilled Revenues	13,999,000		17,293,000
Miscellaneous	1,259,000		5,064,000
Allowance for Uncollectible Accounts	(33,000)		(184,000)
Total Accounts Receivable	139,055,000		163,466,000
Fuel	49,365,000		53,807,000
Materials and Supplies	206,820,000		209,718,000
Risk Management Assets	12,558,000		15,388,000
Accrued Tax Benefits	29,792,000		48,832,000
Prepayments and Other Current Assets	27,897,000		38,103,000
TOTAL CURRENT ASSETS	526,937,000		586,494,000
Property, Plant and Equipment
Generation	3,583,883,000		3,577,906,000
Transmission	1,310,169,000		1,304,225,000
Distribution	1,641,866,000		1,625,057,000
Other Property, Plant and Equipment	1,440,408,000		1,421,361,000
Construction Work in Progress	476,734,000		427,164,000
Total Property, Plant and Equipment	8,453,060,000		8,355,713,000
Accumulated Depreciation and Amortization	3,337,401,000		3,299,349,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	5,115,659,000		5,056,364,000
Other Noncurrent Assets
Regulatory Assets	505,750,000		524,114,000
Spent Nuclear Fuel and Decommissioning Trusts	1,962,151,000		1,931,610,000
Long-term Risk Management Assets	9,505,000		11,495,000
Deferred Charges and Other Noncurrent Assets	140,198,000		143,657,000
TOTAL OTHER NONCURRENT ASSETS	2,617,604,000		2,610,876,000
TOTAL ASSETS	8,260,200,000		8,253,734,000
Current Liabilities
Accounts Payable	121,516,000		142,219,000
Affiliated Companies	69,635,000		93,773,000
Short-term Debt:
Long-term Debt Due Within One Year	287,598,000		294,845,000
Risk Management Liabilities	4,134,000		7,029,000
Customer Deposits	31,851,000		31,103,000
Accrued Taxes	83,314,000		73,292,000
Accrued Interest	15,182,000		27,686,000
Obligations Under Capital Leases	48,407,000		46,210,000
Other Current Liabilities	146,801,000		139,088,000
TOTAL CURRENT LIABILITIES	808,438,000		855,245,000
Noncurrent Liabilities
Long-term Debt	1,725,246,000		1,744,171,000
Long-term Risk Management Liabilities	5,378,000		6,946,000
Deferred Income Taxes	1,184,213,000		1,183,350,000
Regulatory Liabilities and Deferred Investment Tax Credits	1,122,812,000		1,112,645,000
Asset Retirement Obligations	1,269,671,000		1,255,184,000
Deferred Credits and Other Noncurrent Liabilities	159,732,000		174,040,000
TOTAL NONCURRENT LIABILITIES	5,467,052,000		5,476,336,000
TOTAL LIABILITIES	6,275,490,000		6,331,581,000
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	962,271,000		900,182,000
Accumulated Other Comprehensive Income (Loss)	(15,041,000)		(15,509,000)
TOTAL EQUITY	1,984,710,000		1,922,153,000
TOTAL LIABILITIES AND EQUITY	8,260,200,000		8,253,734,000
Ohio Power Co [Member]
Current Assets
Cash and Cash Equivalents	4,780,000		3,004,000
Restricted Cash for Securitized Funding	32,054,000		19,387,000
Advances to Affiliates	0		339,070,000
Accounts Receivable:
Customers	96,218,000		67,054,000
Affiliated Companies	72,311,000		74,771,000
Accrued Unbilled Revenues	49,761,000		36,353,000
Miscellaneous	747,000		1,559,000
Allowance for Uncollectible Accounts	(39,602,000)		(34,984,000)
Total Accounts Receivable	179,435,000		144,753,000
Notes Receivable Due Within One Year - Affiliated	178,580,000		178,580,000
Materials and Supplies	55,311,000		53,711,000
Risk Management Assets	3,980,000		3,082,000
Deferred Income Tax Benefits	33,642,000		36,105,000
Accrued Tax Benefits	487,000		7,109,000
Regulatory Asset for Under-Recovered Fuel Costs	26,153,000		15,829,000
Prepayments and Other Current Assets	7,085,000		6,483,000
TOTAL CURRENT ASSETS	521,507,000		807,113,000
Property, Plant and Equipment
Transmission	2,030,881,000		2,011,289,000
Distribution	3,907,852,000		3,877,532,000
Other Property, Plant and Equipment	379,780,000		364,573,000
Construction Work in Progress	188,636,000		185,428,000
Total Property, Plant and Equipment	6,507,149,000		6,438,822,000
Accumulated Depreciation and Amortization	1,986,318,000		1,973,042,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	4,520,831,000		4,465,780,000
Other Noncurrent Assets
Notes Receivable - Affiliated	118,245,000		118,245,000
Regulatory Assets	1,398,055,000		1,378,697,000
Securitized Assets	126,597,000		131,582,000
Deferred Charges and Other Noncurrent Assets	211,819,000		260,141,000
TOTAL OTHER NONCURRENT ASSETS	1,854,716,000		1,888,665,000
TOTAL ASSETS	6,897,054,000		7,161,558,000
Current Liabilities
Advances from Affiliates	27,108,000		0
Accounts Payable	128,333,000		146,307,000
Affiliated Companies	195,954,000		222,889,000
Short-term Debt:
Long-term Debt Due Within One Year	235,785,000		438,595,000
Accrued Taxes	324,491,000		429,260,000
Accrued Interest	49,854,000		40,853,000
Other Current Liabilities	128,143,000		144,334,000
TOTAL CURRENT LIABILITIES	1,089,668,000		1,422,238,000
Noncurrent Liabilities
Long-term Debt	2,274,500,000		2,296,580,000
Deferred Income Taxes	1,352,301,000		1,330,711,000
Regulatory Liabilities and Deferred Investment Tax Credits	467,433,000		435,499,000
Employee Benefits and Pension Obligations	28,789,000		28,329,000
Deferred Credits and Other Noncurrent Liabilities	23,772,000		22,936,000
TOTAL NONCURRENT LIABILITIES	4,146,795,000		4,114,055,000
TOTAL LIABILITIES	5,236,463,000		5,536,293,000
Rate Matters
Commitments and Contingencies
Equity
Common Stock	321,201,000		321,201,000
Paid-in Capital	663,782,000		663,782,000
Retained Earnings	668,977,000		633,203,000
Accumulated Other Comprehensive Income (Loss)	6,631,000		7,079,000
TOTAL EQUITY	1,660,591,000		1,625,265,000
TOTAL LIABILITIES AND EQUITY	6,897,054,000		7,161,558,000
Public Service Co Of Oklahoma [Member]
Current Assets
Cash and Cash Equivalents	1,756,000		1,277,000
Accounts Receivable:
Customers	29,384,000		32,314,000
Affiliated Companies	18,634,000		30,392,000
Miscellaneous	3,460,000		3,102,000
Allowance for Uncollectible Accounts	(325,000)		(462,000)
Total Accounts Receivable	51,153,000		65,346,000
Fuel	15,054,000		15,191,000
Materials and Supplies	52,695,000		52,707,000
Risk Management Assets	1,349,000		1,167,000
Deferred Income Tax Benefits	0		7,333,000
Accrued Tax Benefits	35,708,000		21,665,000
Regulatory Asset for Under-Recovered Fuel Costs	26,692,000		3,298,000
Prepayments and Other Current Assets	5,994,000		6,194,000
TOTAL CURRENT ASSETS	190,401,000		174,178,000
Property, Plant and Equipment
Generation	1,236,105,000		1,203,221,000
Transmission	727,512,000		731,312,000
Distribution	2,001,049,000		1,986,032,000
Other Property, Plant and Equipment	411,700,000		393,026,000
Construction Work in Progress	172,949,000		175,890,000
Total Property, Plant and Equipment	4,549,315,000		4,489,481,000
Accumulated Depreciation and Amortization	1,334,507,000		1,323,522,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	3,214,808,000		3,165,959,000
Other Noncurrent Assets
Regulatory Assets	164,929,000		156,690,000
Employee Benefits and Pension Assets	23,162,000		22,629,000
Deferred Charges and Other Noncurrent Assets	38,197,000		7,238,000
TOTAL OTHER NONCURRENT ASSETS	226,288,000		186,557,000
TOTAL ASSETS	3,631,497,000		3,526,694,000
Current Liabilities
Advances from Affiliates	70,119,000		36,772,000
Accounts Payable	106,312,000		150,184,000
Affiliated Companies	45,468,000		45,427,000
Short-term Debt:
Long-term Debt Due Within One Year	34,118,000		34,115,000
Risk Management Liabilities	83,000		85,000
Customer Deposits	45,676,000		45,379,000
Accrued Taxes	44,847,000		23,442,000
Accrued Interest	15,040,000		12,646,000
Other Current Liabilities	80,931,000		58,992,000
TOTAL CURRENT LIABILITIES	442,594,000		407,042,000
Noncurrent Liabilities
Long-term Debt	1,015,675,000		965,695,000
Deferred Income Taxes	848,101,000		836,556,000
Regulatory Liabilities and Deferred Investment Tax Credits	328,224,000		327,673,000
Employee Benefits and Pension Obligations	9,966,000		10,561,000
Deferred Credits and Other Noncurrent Liabilities	36,634,000		37,066,000
TOTAL NONCURRENT LIABILITIES	2,238,600,000		2,177,551,000
TOTAL LIABILITIES	2,681,194,000		2,584,593,000
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	423,524,000		415,076,000
Accumulated Other Comprehensive Income (Loss)	5,512,000		5,758,000
TOTAL EQUITY	950,303,000		942,101,000
TOTAL LIABILITIES AND EQUITY	3,631,497,000		3,526,694,000
Southwestern Electric Power Co [Member]
Current Assets
Cash and Cash Equivalents	17,995,000		17,241,000
Accounts Receivable:
Customers	76,416,000		86,263,000
Affiliated Companies	21,341,000		22,389,000
Miscellaneous	24,380,000		27,175,000
Allowance for Uncollectible Accounts	(1,342,000)		(1,418,000)
Total Accounts Receivable	120,795,000		134,409,000
Fuel	116,294,000		122,026,000
Materials and Supplies	75,492,000		74,862,000
Risk Management Assets	1,907,000		1,179,000
Deferred Income Tax Benefits	170,410,000		177,297,000
Regulatory Asset for Under-Recovered Fuel Costs	32,325,000		17,949,000
Prepayments and Other Current Assets	24,786,000		21,089,000
TOTAL CURRENT ASSETS	560,004,000		566,052,000
Property, Plant and Equipment
Generation	3,790,809,000		3,764,429,000
Transmission	1,190,356,000		1,165,167,000
Distribution	1,850,573,000		1,843,912,000
Other Property, Plant and Equipment	873,458,000		869,230,000
Construction Work in Progress	309,200,000		281,849,000
Total Property, Plant and Equipment	8,014,396,000		7,924,587,000
Accumulated Depreciation and Amortization	2,424,701,000		2,391,652,000
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET	5,589,695,000		5,532,935,000
Other Noncurrent Assets
Regulatory Assets	367,406,000		369,905,000
Deferred Charges and Other Noncurrent Assets	133,123,000		92,890,000
TOTAL OTHER NONCURRENT ASSETS	500,529,000		462,795,000
TOTAL ASSETS	6,650,228,000		6,561,782,000
Current Liabilities
Advances from Affiliates	117,342,000		9,180,000
Accounts Payable	138,177,000		152,653,000
Affiliated Companies	53,742,000		56,923,000
Short-term Debt:
Long-term Debt Due Within One Year	56,750,000		3,250,000
Customer Deposits	57,065,000		56,375,000
Accrued Taxes	83,946,000		41,508,000
Accrued Interest	18,565,000		43,996,000
Obligations Under Capital Leases	18,220,000		17,899,000
Regulatory Liability for Over-Recovered Fuel Costs	0		7,275,000
Other Current Liabilities	61,448,000		79,622,000
TOTAL CURRENT LIABILITIES	605,255,000		468,681,000
Noncurrent Liabilities
Long-term Debt	1,985,046,000		2,040,082,000
Deferred Income Taxes	1,277,745,000		1,271,478,000
Regulatory Liabilities and Deferred Investment Tax Credits	477,469,000		472,128,000
Asset Retirement Obligations	88,866,000		87,630,000
Employee Benefits and Pension Obligations	13,914,000		14,602,000
Obligations Under Capital Leases	102,984,000		105,086,000
Deferred Credits and Other Noncurrent Liabilities	46,038,000		46,178,000
TOTAL NONCURRENT LIABILITIES	3,992,062,000		4,037,184,000
TOTAL LIABILITIES	4,597,317,000		4,505,865,000
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	1,250,477,000		1,253,617,000
Accumulated Other Comprehensive Income (Loss)	(8,176,000)		(8,444,000)
TOTAL COMMON SHAREHOLDER'S EQUITY	2,052,567,000		2,055,439,000
Noncontrolling Interests	344,000		478,000
TOTAL EQUITY	2,052,911,000		2,055,917,000
TOTAL LIABILITIES AND EQUITY	$ 6,650,228,000		$ 6,561,782,000

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