Financing Activities (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
		Oct. 22, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Long-term Debt
Senior Unsecured Notes			$ 13,801,000		$ 13,801,000		$ 12,647,000
Pollution Control Bonds			1,874,000		1,874,000		1,963,000
Securitization Bonds			2,072,000		2,072,000		2,380,000
Spent Nuclear Fuel Obligation	[1]		266,000		266,000		266,000
Other Long-term Debt			1,151,000		1,151,000		1,101,000
Fair Value of Interest Rate Hedges			0		0		(6,000)
Unamortized Discount, Net			(31,000)		(31,000)		(24,000)
Total Long-term Debt Outstanding			19,426,000		19,426,000		18,601,000
Long-term Debt Due Within One Year			1,826,000		1,826,000		2,500,000
Long-term Debt			17,600,000		17,600,000		16,101,000
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[2]				2,956,000
Retirements and Principal Payments					2,131,000	$ 1,536,000
Short-term Debt:
Securitized Debt for Receivables	[3]		750,000		750,000		744,000
Commercial Paper			32,000		32,000		602,000
Total Short-term Debt			$ 782,000		$ 782,000		$ 1,346,000
Securitized Debt for Receivables	[4]		0.28%		0.28%		0.22%
Comparative Accounts Receivable Information
Effective Interest Rates on Securitization of Accounts Receivable			0.30%	0.21%	0.28%	0.22%
Net Uncollectible Accounts Receivable Written Off			$ 13,000	$ 16,000	$ 27,000	$ 32,000
Customer Accounts Receivable Managed Portfolio
Accounts Receivable Retained Interest and Pledged as Collateral Less Uncollectible Accounts			970,000		970,000		$ 975,000
Total Principal Outstanding			750,000		750,000		744,000
Delinquent Securitized Accounts Receivable			50,000		50,000		44,000
Bad Debt Reserves Related to Securitization, Sale of Accounts Receivable			16,000		16,000		13,000
Unbilled Receivables Related to Securitization, Sale of Accounts Receivable			277,000		277,000		335,000
Financing Activities (Textuals) [Abstract]
Reacquired Pollution Controls Bonds Held by Trustees			475,000		$ 475,000
Maximum Percentage Debt to Capitalization					67.50%
Total Commitment from Bank Conduits to Finance Receivables			750,000	700,000	$ 750,000	700,000
Trust Fund Assets One Time Fee Obligation for Nuclear Fuel Disposition			309,000		309,000		309,000
Includes Debt Included in Liabilities Held for Sale [Member]
Long-term Debt
Notes Payable	[5]		374,000		374,000		357,000
Total Long-term Debt Outstanding	[5],[6]		19,507,000		19,507,000		18,684,000
Long-term Debt Due Within One Year	[5]		1,907,000		1,907,000		2,503,000
Long-term Debt	[5]		$ 17,600,000		17,600,000		$ 16,181,000
Includes Principal Payments Included in Discontinued Operations [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments	[7]				$ 2,133,000
Commercial Paper [Member]
Short-term Debt:
Commercial Paper	[4]		0.44%		0.44%		0.59%
AEP Subsidiaries [Member]
Long-term Debt
Long-term Debt Due Within One Year			$ 424,000		$ 424,000		$ 431,000
Long-term Debt			$ 2,004,000		2,004,000		2,260,000
AEP Subsidiaries [Member] | Notes Payable One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 5,000
Interest Rate (Variable)					Variable
Due Date					2017
AEP Subsidiaries [Member] | Notes Payable Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments	[7]				$ 1,000
Interest Rate (Percentage)			7.59%		7.59%
Due Date					2026
AEP Subsidiaries [Member] | Notes Payable Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments	[7]				$ 1,000
Interest Rate (Percentage)			8.03%		8.03%
Due Date					2026
AEP Generating Co [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 7,000
Interest Rate (Percentage)			6.33%		6.33%
Due Date					2037
AEP Texas Central Co [Member] | Securitization Bonds One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 27,000
Interest Rate (Percentage)			0.88%		0.88%
Due Date					2017
AEP Texas Central Co [Member] | Securitization Bonds Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 81,000
Interest Rate (Percentage)			5.09%		5.09%
Due Date					2015
AEP Texas Central Co [Member] | Securitization Bonds Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 76,000
Interest Rate (Percentage)			6.25%		6.25%
Due Date					2016
AEP Texas Central Co [Member] | Securitization Bonds Four [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 57,000
Interest Rate (Percentage)			5.17%		5.17%
Due Date					2018
AEP Texas Central Co [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 250,000
Interest Rate (Percentage)			3.85%		3.85%
Due Date					2025
AEP Texas North Co [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 50,000
Interest Rate (Percentage)			3.75%		3.75%
Due Date					2025
AEP Texas North Co [Member] | Senior Unsecured Notes Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 25,000
Interest Rate (Percentage)			3.27%		3.27%
Due Date					2022
Appalachian Power Co [Member]
Long-term Debt
Total Long-term Debt Outstanding			$ 3,955,295		$ 3,955,295		3,980,274
Long-term Debt Due Within One Year			318,020		318,020		552,212
Long-term Debt			3,637,275		3,637,275		3,342,062
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					672,552	$ 512,702
Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits
Maximum Borrowings from Utility Money Pool					82,417
Maximum Loans to Utility Money Pool					694,785
Average Borrowings from Utility Money Pool					46,664
Average Loans to Utility Money Pool					97,657
Net Loans (Borrowings) to/from Utility Money Pool			(11,689)		(11,689)
Authorized Short-term Borrowing Limit					$ 600,000
Maximum and Minimum Interest Rates
Maximum Interest Rate					0.59%	0.33%
Minimum Interest Rate					0.39%	0.24%
Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool
Average Interest Rate for Funds Borrowed					0.46%	0.26%
Average Interest Rate for Funds Loaned					0.46%	0.28%
Accounts Receivable and Accrued Unbilled Revenues
Accounts Receivable and Accrued Unbilled Revenues			125,153		$ 125,153		159,823
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Fees Paid to AEP Credit for Customer Accounts Receivable Sold			1,952	2,166	5,979	$ 6,626
Proceeds from Sale of Receivables
Proceeds from Sale of Receivables to AEP Credit			$ 355,275	354,406	$ 1,115,492	1,137,564
Financing Activities (Textuals) [Abstract]
Maximum Percentage Debt to Capitalization					67.50%
Appalachian Power Co [Member] | Securitization Bonds One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 22,524
Interest Rate (Percentage)			2.008%		2.008%
Due Date					2024
Appalachian Power Co [Member] | Notes Payable Affiliated [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 86,000
Interest Rate (Percentage)			3.125%		3.125%
Due Date					2015
Appalachian Power Co [Member] | Pollution Control Bonds One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 86,000
Interest Rate (Percentage)			1.90%		1.90%
Due Date					2019
Appalachian Power Co [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 350,000
Interest Rate (Percentage)			4.45%		4.45%
Due Date					2045
Appalachian Power Co [Member] | Senior Unsecured Notes Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 300,000
Interest Rate (Percentage)			3.40%		3.40%
Due Date					2025
Appalachian Power Co [Member] | Senior Unsecured Notes Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 350,000
Interest Rate (Percentage)			7.95%		7.95%
Due Date					2020
Appalachian Power Co [Member] | Senior Unsecured Notes Four [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 300,000
Interest Rate (Percentage)			3.40%		3.40%
Due Date					2015
Appalachian Power Co [Member] | Land Note [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 28
Interest Rate (Percentage)			13.718%		13.718%
Due Date					2026
Indiana Michigan Power Co [Member]
Long-term Debt
Total Long-term Debt Outstanding			$ 2,060,651		$ 2,060,651		2,027,397
Long-term Debt Due Within One Year			301,148		301,148		382,187
Long-term Debt			1,759,503		1,759,503		1,645,210
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					178,471	$ 190,550
Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits
Maximum Borrowings from Utility Money Pool					200,032
Maximum Loans to Utility Money Pool					13,515
Average Borrowings from Utility Money Pool					136,890
Average Loans to Utility Money Pool					13,503
Net Loans (Borrowings) to/from Utility Money Pool			(137,496)		(137,496)
Authorized Short-term Borrowing Limit					$ 500,000
Maximum and Minimum Interest Rates
Maximum Interest Rate					0.59%	0.33%
Minimum Interest Rate					0.39%	0.24%
Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool
Average Interest Rate for Funds Borrowed					0.47%	0.27%
Average Interest Rate for Funds Loaned					0.46%	0.30%
Accounts Receivable and Accrued Unbilled Revenues
Accounts Receivable and Accrued Unbilled Revenues			139,481		$ 139,481		137,459
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Fees Paid to AEP Credit for Customer Accounts Receivable Sold			2,191	2,011	6,611	$ 5,836
Proceeds from Sale of Receivables
Proceeds from Sale of Receivables to AEP Credit			401,518	372,422	1,192,137	1,132,603
Financing Activities (Textuals) [Abstract]
Reacquired Pollution Controls Bonds Held by Trustees			$ 40,000		$ 40,000
Maximum Percentage Debt to Capitalization					67.50%
Indiana Michigan Power Co [Member] | Notes Payable One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 111,300
Interest Rate (Variable)					Variable
Due Date					2019
Indiana Michigan Power Co [Member] | Notes Payable Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 18,600
Interest Rate (Variable)					Variable
Due Date					2016
Indiana Michigan Power Co [Member] | Notes Payable Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 20,601
Interest Rate (Variable)					Variable
Due Date					2017
Indiana Michigan Power Co [Member] | Notes Payable Four [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 26,512
Interest Rate (Variable)					Variable
Due Date					2019
Indiana Michigan Power Co [Member] | Notes Payable Five [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 16,265
Interest Rate (Variable)					Variable
Due Date					2019
Indiana Michigan Power Co [Member] | Notes Payable Six [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 1,273
Interest Rate (Variable)					Variable
Due Date					2016
Indiana Michigan Power Co [Member] | Notes Payable Seven [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 882
Interest Rate (Percentage)			2.12%		2.12%
Due Date					2016
Indiana Michigan Power Co [Member] | Other Long Term Debt One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 100,000
Interest Rate (Variable)					Variable
Due Date					2018
Indiana Michigan Power Co [Member] | Other Long Term Debt Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 93,500
Interest Rate (Variable)					Variable
Due Date					2015
Indiana Michigan Power Co [Member] | Other Long Term Debt Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 838
Interest Rate (Percentage)			6.00%		6.00%
Due Date					2025
Ohio Power Co [Member]
Long-term Debt
Total Long-term Debt Outstanding			$ 2,166,050		$ 2,166,050		2,297,123
Long-term Debt Due Within One Year			395,938		395,938		131,497
Long-term Debt			1,770,112		1,770,112		2,165,626
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					131,484	$ 438,583
Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits
Maximum Borrowings from Utility Money Pool					0
Maximum Loans to Utility Money Pool					367,472
Average Borrowings from Utility Money Pool					0
Average Loans to Utility Money Pool					256,020
Net Loans (Borrowings) to/from Utility Money Pool			279,129		279,129
Authorized Short-term Borrowing Limit					$ 400,000
Maximum and Minimum Interest Rates
Maximum Interest Rate					0.59%	0.33%
Minimum Interest Rate					0.39%	0.24%
Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool
Average Interest Rate for Funds Borrowed					0.00%	0.27%
Average Interest Rate for Funds Loaned					0.47%	0.29%
Accounts Receivable and Accrued Unbilled Revenues
Accounts Receivable and Accrued Unbilled Revenues			354,276		$ 354,276		365,834
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Fees Paid to AEP Credit for Customer Accounts Receivable Sold			8,545	7,213	23,228	$ 21,358
Proceeds from Sale of Receivables
Proceeds from Sale of Receivables to AEP Credit			670,677	668,112	1,949,042	1,980,764
Financing Activities (Textuals) [Abstract]
Reacquired Pollution Controls Bonds Held by Trustees			$ 345,000		345,000
Ohio Power Co [Member] | Securitization Bonds One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 45,426
Interest Rate (Percentage)			0.958%		0.958%
Due Date					2018
Ohio Power Co [Member] | Pollution Control Bonds One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 86,000
Interest Rate (Percentage)			3.125%		3.125%
Due Date					2015
Ohio Power Co [Member] | Other Long Term Debt One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 58
Interest Rate (Percentage)			1.149%		1.149%
Due Date					2028
Public Service Co Of Oklahoma [Member]
Long-term Debt
Total Long-term Debt Outstanding			$ 1,290,973		$ 1,290,973		1,041,036
Long-term Debt Due Within One Year			150,437		150,437		427
Long-term Debt			1,140,536		1,140,536		1,040,609
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					319	$ 34,010
Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits
Maximum Borrowings from Utility Money Pool					165,947
Maximum Loans to Utility Money Pool					152,498
Average Borrowings from Utility Money Pool					113,117
Average Loans to Utility Money Pool					74,225
Net Loans (Borrowings) to/from Utility Money Pool			116,345		116,345
Authorized Short-term Borrowing Limit					$ 300,000
Maximum and Minimum Interest Rates
Maximum Interest Rate					0.59%	0.33%
Minimum Interest Rate					0.39%	0.24%
Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool
Average Interest Rate for Funds Borrowed					0.49%	0.27%
Average Interest Rate for Funds Loaned					0.46%	0.00%
Accounts Receivable and Accrued Unbilled Revenues
Accounts Receivable and Accrued Unbilled Revenues			146,039		$ 146,039		112,905
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Fees Paid to AEP Credit for Customer Accounts Receivable Sold			1,709	1,745	4,455	$ 4,417
Proceeds from Sale of Receivables
Proceeds from Sale of Receivables to AEP Credit			$ 411,523	398,567	$ 1,025,909	$ 1,014,320
Financing Activities (Textuals) [Abstract]
Maximum Percentage Debt to Capitalization					67.50%
Public Service Co Of Oklahoma [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 125,000
Interest Rate (Percentage)			3.17%		3.17%
Due Date					2025
Public Service Co Of Oklahoma [Member] | Senior Unsecured Notes Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 125,000
Interest Rate (Percentage)			4.09%		4.09%
Due Date					2045
Public Service Co Of Oklahoma [Member] | Other Long Term Debt One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 319
Interest Rate (Percentage)			3.00%		3.00%
Due Date					2027
Southwestern Electric Power Co [Member]
Maximum Borrowings from Nonutility Money Pool					$ 0
Maximum Interest Rate for Funds Borrowed from Nonutility Money Pool					0.00%	0.00%
Long-term Debt
Total Long-term Debt Outstanding			$ 2,283,966		$ 2,283,966		2,140,437
Long-term Debt Due Within One Year			3,250		3,250		306,750
Long-term Debt			2,280,716		2,280,716		1,833,687
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					306,750	$ 3,250
Utility Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits
Maximum Borrowings from Utility Money Pool					112,481
Maximum Loans to Utility Money Pool					299,932
Average Borrowings from Utility Money Pool					52,596
Average Loans to Utility Money Pool					121,845
Net Loans (Borrowings) to/from Utility Money Pool			43,073		43,073
Authorized Short-term Borrowing Limit					$ 350,000
Maximum and Minimum Interest Rates
Maximum Interest Rate					0.59%	0.33%
Minimum Interest Rate					0.39%	0.24%
Average Interest Rates for Funds Borrowed from and Loaned to Utility Money Pool
Average Interest Rate for Funds Borrowed					0.46%	0.28%
Average Interest Rate for Funds Loaned					0.48%	0.27%
Accounts Receivable and Accrued Unbilled Revenues
Accounts Receivable and Accrued Unbilled Revenues			176,113		$ 176,113		$ 148,668
Fees Paid to AEP Credit for Customer Accounts Receivable Sold
Fees Paid to AEP Credit for Customer Accounts Receivable Sold			1,997	1,890	5,344	$ 5,035
Proceeds from Sale of Receivables
Proceeds from Sale of Receivables to AEP Credit			468,027	$ 466,828	$ 1,222,294	$ 1,278,325
Financing Activities (Textuals) [Abstract]
Maximum Percentage Debt to Capitalization					67.50%
Minimum Interest Rate for Funds Borrowed from Nonutility Money Pool					0.00%	0.00%
Maximum Interest Rate for Funds Loaned to Nonutility Money Pool					0.59%	0.33%
Minimum Interest Rate for Funds Loaned to Nonutility Money Pool					0.39%	0.00%
Average Interest Rate for Funds Borrowed from Nonutility Money Pool					0.00%	0.00%
Average Interest Rate for Funds Loaned to Nonutility Money Pool					0.47%	0.28%
Maximum Loans to Nonutility Money Pool					$ 1,948
Average Borrowings from Nonutility Money Pool					0
Average Loans to Nonutility Money Pool					1,945
Net Loans To Borrowings From Nonutility Money Pool			$ 1,946		1,946
Southwestern Electric Power Co [Member] | Notes Payable One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 3,250
Interest Rate (Percentage)			4.58%		4.58%
Due Date					2032
Southwestern Electric Power Co [Member] | Pollution Control Bonds One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 53,500
Interest Rate (Percentage)			1.60%		1.60%
Due Date					2019
Southwestern Electric Power Co [Member] | Pollution Control Bonds Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 53,500
Interest Rate (Percentage)			3.25%		3.25%
Due Date					2015
Southwestern Electric Power Co [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances	[8]				$ 400,000
Interest Rate (Percentage)			3.90%		3.90%
Due Date					2045
Southwestern Electric Power Co [Member] | Senior Unsecured Notes Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 100,000
Interest Rate (Percentage)			5.375%		5.375%
Due Date					2015
Southwestern Electric Power Co [Member] | Senior Unsecured Notes Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 150,000
Interest Rate (Percentage)			4.90%		4.90%
Due Date					2015
AEP Transmission Company, LLC [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 60,000
Interest Rate (Percentage)			4.01%		4.01%
Due Date					2030
AEP Transmission Company, LLC [Member] | Senior Unsecured Notes Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 50,000
Interest Rate (Percentage)			3.66%		3.66%
Due Date					2025
AEP Transmission Company, LLC [Member] | Senior Unsecured Notes Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 40,000
Interest Rate (Percentage)			3.76%		3.76%
Due Date					2025
Kentucky Power Co [Member] | Other Long Term Debt One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 25,000
Interest Rate (Variable)					Variable
Due Date					2018
Kentucky Power Co [Member] | Other Long Term Debt Two [Member]
Financing Activities (Textuals) [Abstract]
Credit Facility			$ 75,000		$ 75,000
Kentucky Power Co [Member] | Other Long Term Debt Two [Member] | Subsequent Event [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances		$ 25,000
Due Date		2018
Transource Missouri [Member] | Other Long Term Debt One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 20,000
Interest Rate (Variable)					Variable
Due Date					2018
Transource Missouri [Member] | Other Long Term Debt Two [Member]
Financing Activities (Textuals) [Abstract]
Credit Facility			$ 300,000		$ 300,000
Transource Missouri [Member] | Other Long Term Debt Two [Member] | Subsequent Event [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances		$ 6,000
Due Date		2018
AEP Generation Resources [Member] | Pollution Control Bonds One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 50,000
Interest Rate (Variable)					Variable
Due Date					2015
AEP Generation Resources [Member] | Pollution Control Bonds Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 39,000
Interest Rate (Variable)					Variable
Due Date					2015
AEP Generation Resources [Member] | Other Long Term Debt One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 500,000
Interest Rate (Variable)					Variable
Due Date					2017
AEP Generation Resources [Member] | Other Long Term Debt Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Retirements and Principal Payments					$ 500,000
Interest Rate (Variable)					Variable
Due Date					2015
Wheeling Power Co [Member] | Senior Unsecured Notes One [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 113,000
Interest Rate (Percentage)			3.36%		3.36%
Due Date					2022
Wheeling Power Co [Member] | Senior Unsecured Notes Two [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 122,000
Interest Rate (Percentage)			3.70%		3.70%
Due Date					2025
Wheeling Power Co [Member] | Senior Unsecured Notes Three [Member]
Long-term Debt and Other Securities Issued, Retired and Principal Payments Made
Issuances					$ 50,000
Interest Rate (Percentage)			4.20%		4.20%
Due Date					2035

[1] Pursuant to the Nuclear Waste Policy Act of 1982, I&M, a nuclear licensee, has an obligation to the United States Department of Energy for spent nuclear fuel disposal. The obligation includes a one-time fee for nuclear fuel consumed prior to April 7, 1983. Trust fund assets related to this obligation were $309 million and $309 million as of September 30, 2015 and December 31, 2014, respectively, and are included in Spent Nuclear Fuel and Decommissioning Trusts on the condensed balance sheets.

[2] Amount indicated on the statement of cash flows is net of issuance costs and premium or discount and will not tie to the issuance amount.

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

[4] Weighted average rate.

[5] Amounts include debt related to AEPRO that have been classified as Liabilities Held for Sale on the condensed balance sheets. See "AEPRO (AEP River Operations Segment)" section of Note 6 for additional information.

[6] Amounts include debt related to AEPRO that have been classified as Liabilities Held for Sale on the condensed balance sheets. See "AEPRO (AEP River Operations Segment)" section of Note 6 for additional information.

[7] Amount includes principal payments of debt related to AEPRO that has been classified as Discontinued Operations on the condensed statement of cash flows.

[8] Amounts indicated on the statements of cash flows are net of issuance costs and premium or discount and will not tie to the issuance amounts.