Rate Matters (Details) (USD $)	3 Months Ended		6 Months Ended																																											3 Months Ended		6 Months Ended											3 Months Ended		6 Months Ended																															6 Months Ended			6 Months Ended			6 Months Ended				6 Months Ended												6 Months Ended		6 Months Ended																				6 Months Ended		6 Months Ended		1 Months Ended			6 Months Ended						1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2012 Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2013 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Dec. 31, 2012 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Jun. 30, 2013 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Mountaineer Carbon Capture and Storage Product Validation Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Mountaineer Carbon Capture and Storage Product Validation Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Dec. 31, 2012 Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Jun. 30, 2013 Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Dec. 31, 2012 Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Jun. 30, 2013 Ormet Delayed Payment Arrangement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Ormet Delayed Payment Arrangement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member]	Dec. 31, 2012 Appalachian Power Co [Member]	Jun. 30, 2013 Appalachian Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2012 Appalachian Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2013 Appalachian Power Co [Member] Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member] Mountaineer Carbon Capture and Storage Product Validation Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Mountaineer Carbon Capture and Storage Product Validation Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member] Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member] Deferred Wind Power Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Deferred Wind Power Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member] Dresden Plant Operating Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Dresden Plant Operating Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member] Transmission Agreement Phase-In [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Transmission Agreement Phase-In [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Appalachian Power Co [Member] Mountaineer Carbon Capture and Storage Commercial Scale Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Appalachian Power Co [Member] Mountaineer Carbon Capture and Storage Commercial Scale Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Southwestern Electric Power Co [Member]	Jun. 30, 2012 Southwestern Electric Power Co [Member]	Jun. 30, 2013 Southwestern Electric Power Co [Member]	Jun. 30, 2012 Southwestern Electric Power Co [Member]	Dec. 31, 2012 Southwestern Electric Power Co [Member]	Jun. 30, 2013 Southwestern Electric Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2012 Southwestern Electric Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2013 Southwestern Electric Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Southwestern Electric Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Southwestern Electric Power Co [Member] Mountaineer Carbon Capture and Storage Commercial Scale Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Southwestern Electric Power Co [Member] Mountaineer Carbon Capture and Storage Commercial Scale Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Southwestern Electric Power Co [Member] Rate Case Expenses [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Southwestern Electric Power Co [Member] Rate Case Expenses [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Ohio Power Co [Member]	Jun. 30, 2012 Ohio Power Co [Member]	Jun. 30, 2013 Ohio Power Co [Member]	Jun. 30, 2012 Ohio Power Co [Member]	Dec. 31, 2012 Ohio Power Co [Member]	Jun. 30, 2013 Ohio Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2012 Ohio Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2013 Ohio Power Co [Member] Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Ohio Power Co [Member] Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Ohio Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Ohio Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Ohio Power Co [Member] Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Dec. 31, 2012 Ohio Power Co [Member] Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning a Return	Jun. 30, 2013 Ohio Power Co [Member] Ormet Delayed Payment Arrangement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Ohio Power Co [Member] Ormet Delayed Payment Arrangement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Public Service Co Of Oklahoma [Member]	Dec. 31, 2012 Public Service Co Of Oklahoma [Member]	Jun. 30, 2013 Public Service Co Of Oklahoma [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2012 Public Service Co Of Oklahoma [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2013 Public Service Co Of Oklahoma [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Public Service Co Of Oklahoma [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Indiana Michigan Power Co [Member]	Dec. 31, 2012 Indiana Michigan Power Co [Member]	Jun. 30, 2013 Indiana Michigan Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2012 Indiana Michigan Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2013 Indiana Michigan Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Indiana Michigan Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Indiana Michigan Power Co [Member] Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Indiana Michigan Power Co [Member] Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Indiana Michigan Power Co [Member] Mountaineer Carbon Capture and Storage Commercial Scale Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Indiana Michigan Power Co [Member] Mountaineer Carbon Capture and Storage Commercial Scale Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Indiana Michigan Power Co [Member] Under-recovered Capacity Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Dec. 31, 2012 Indiana Michigan Power Co [Member] Under-recovered Capacity Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning a Return	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member]	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member] Deferred Capacity Costs [Member]	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member] Deferred Fuel Costs [Member]	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member] Ohio Power Co [Member]	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member] Ohio Power Co [Member] Deferred Capacity Costs [Member]	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member] Ohio Power Co [Member] Deferred Fuel Costs [Member]	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member] Significantly Excessive Earnings Test - 2010 [Member]	Jun. 30, 2013 Ohio Electric Security Plan Filing [Member] Significantly Excessive Earnings Test - 2010 [Member] Ohio Power Co [Member]	Jun. 30, 2013 Storm Damage Recovery Rider [Member] Storm Costs [Member]	Jun. 30, 2013 Storm Damage Recovery Rider [Member] Ohio Power Co [Member] Storm Costs [Member]	Jun. 30, 2013 Ohio Fuel Adjustment Clause Audit - 2009 [Member]	Jun. 30, 2013 Ohio Fuel Adjustment Clause Audit - 2009 [Member] Ohio Power Co [Member]	Jun. 30, 2013 Ohio Fuel Adjustment Clause Audit - 2010 and 2011 [Member]	Jun. 30, 2013 Ohio Fuel Adjustment Clause Audit - 2010 and 2011 [Member] Ohio Power Co [Member]	Jun. 30, 2013 Ormet Interim Arrangement [Member]	Jun. 30, 2013 Ormet Interim Arrangement [Member] Ohio Power Co [Member]	Jun. 30, 2013 Special Rate Mechanism For Ormet [Member]	Jun. 30, 2013 Special Rate Mechanism For Ormet [Member] Ohio Power Co [Member]	Jun. 30, 2013 Ohio IGCC Plant [Member]	Jun. 30, 2013 Ohio IGCC Plant [Member] Ohio Power Co [Member]	Jun. 30, 2013 Turk Plant [Member]	Jun. 30, 2013 Turk Plant [Member] Electric Transmission [Member]	Jun. 30, 2013 Turk Plant [Member] Southwestern Electric Power Co [Member]	Jun. 30, 2013 Turk Plant [Member] Southwestern Electric Power Co [Member] Electric Transmission [Member]	Jun. 30, 2013 Texas Base Rate Case [Member]	Jun. 30, 2013 Texas Base Rate Case [Member] Minimum [Member]	Jun. 30, 2013 Texas Base Rate Case [Member] Maximum [Member]	Jun. 30, 2013 Texas Base Rate Case [Member] Southwestern Electric Power Co [Member]	Jun. 30, 2013 Texas Base Rate Case [Member] Southwestern Electric Power Co [Member] Minimum [Member]	Jun. 30, 2013 Texas Base Rate Case [Member] Southwestern Electric Power Co [Member] Maximum [Member]	Jun. 30, 2013 Louisiana 2012 Formula Rate Filing [Member]	Jun. 30, 2013 Louisiana 2012 Formula Rate Filing [Member] Southwestern Electric Power Co [Member]	Jun. 30, 2013 Flint Creek Plant Environmental Controls [Member]	Jun. 30, 2013 Flint Creek Plant Environmental Controls [Member] Southwestern Electric Power Co [Member]	Jun. 30, 2013 APCo's Filing for IGCC Plant [Member] Applicable to West Virginia Jurisdiction [Member]	Jun. 30, 2013 APCo's Filing for IGCC Plant [Member] Applicable to West Virginia Jurisdiction [Member] Appalachian Power Co [Member]	Jun. 30, 2013 APCo's Filing for IGCC Plant [Member] Applicable to FERC Jurisdiction [Member]	Jun. 30, 2013 APCo's Filing for IGCC Plant [Member] Applicable to FERC Jurisdiction [Member] Appalachian Power Co [Member]	Jun. 30, 2013 APCo's Filing for IGCC Plant [Member] Applicable to Virginia Jurisdiction [Member]	Jun. 30, 2013 APCo's Filing for IGCC Plant [Member] Applicable to Virginia Jurisdiction [Member] Appalachian Power Co [Member]	Jun. 30, 2013 West Virginia Expanded Net Energy Charge [Member]	Jun. 30, 2013 West Virginia Expanded Net Energy Charge [Member] Appalachian Power Co [Member]	Jun. 30, 2013 Oklahoma Environmental Compliance Plan [Member]	Jun. 30, 2013 Oklahoma Environmental Compliance Plan [Member] Northeastern Station Units 3 and 4 [Member]	Jun. 30, 2013 Oklahoma Environmental Compliance Plan [Member] Public Service Co Of Oklahoma [Member]	Jun. 30, 2013 Oklahoma Environmental Compliance Plan [Member] Public Service Co Of Oklahoma [Member] Northeastern Station Units 3 and 4 [Member]	Jun. 30, 2013 Cook Plant Life Cycle Management Project [Member]	Jun. 30, 2013 Cook Plant Life Cycle Management Project [Member] Indiana Michigan Power Co [Member]	Jul. 26, 2013 Cook Plant Life Cycle Management Project [Member] Indiana Filing [Member] Subsequent Event [Member]	Jul. 26, 2013 Cook Plant Life Cycle Management Project [Member] Indiana Filing [Member] Indiana Michigan Power Co [Member] Subsequent Event [Member]	Jun. 30, 2013 Plant Transfer [Member] Costs Incurred Related to Flue Gas Desulfurization Project [Member] Big Sandy Plant Unit 2 Flue Gas Desulfurization Project [Member]	Jun. 30, 2013 Plant Transfer [Member] Terms Of Kentucky Power Co Memorandum Of Understanding [Member]	Jun. 30, 2013 Virginia Environmental Rate Adjustment Clause [Member]	Jun. 30, 2013 Virginia Environmental Rate Adjustment Clause [Member] Appalachian Power Co [Member]	Jun. 30, 2013 Virginia Generation Rate Adjustment Clause [Member] Dresden Plant [Member]	Jun. 30, 2013 Virginia Generation Rate Adjustment Clause [Member] Appalachian Power Co [Member] Dresden Plant [Member]	Jun. 30, 2013 Rockport Plant CCT Project [Member]	Jul. 26, 2013 Rockport Plant CCT Project [Member] Subsequent Event [Member]	Jun. 30, 2013 Rockport Plant CCT Project [Member] Indiana Michigan Power Co [Member]	Jul. 26, 2013 Rockport Plant CCT Project [Member] Indiana Michigan Power Co [Member] Subsequent Event [Member]	Jun. 30, 2013 Indiana Base Rate Case [Member]	Jun. 30, 2013 Indiana Base Rate Case [Member] Indiana Michigan Power Co [Member]	Jun. 30, 2013 Virginia Storm Costs [Member]	Jun. 30, 2013 Virginia Storm Costs [Member] Appalachian Power Co [Member]	Jun. 30, 2013 Kentucky 2013 Base Rate Case [Member]	Jun. 30, 2013 Kentucky 2013 Base Rate Case [Member] Big Sandy Plant Unit 2 Flue Gas Desulfurization Project [Member]	Jun. 30, 2013 Kentucky 2013 Base Rate Case [Member] Storm Costs [Member]
Regulatory Assets Not Being Recovered [Abstract]
Regulatory Assets, Noncurrent	$ 5,139,000,000		$ 5,139,000,000		$ 5,106,000,000	$ 288,000,000	$ 304,000,000	$ 22,000,000	$ 23,000,000	$ 142,000,000	$ 172,000,000	$ 14,000,000	$ 14,000,000	$ 29,000,000	$ 29,000,000	$ 3,000,000	$ 1,000,000	$ 44,000,000	$ 36,000,000	$ 0	$ 11,000,000	$ 14,000,000	$ 13,000,000	$ 20,000,000	$ 5,000,000	$ 1,364,541,000	$ 1,435,704,000	$ 125,104,000	$ 157,560,000	$ 65,206,000	$ 94,458,000	$ 14,155,000	$ 14,155,000	$ 28,777,000	$ 29,320,000	$ 0	$ 5,143,000	$ 3,652,000	$ 1,447,000	$ 8,760,000	$ 8,758,000	$ 3,267,000	$ 2,992,000	$ 1,287,000	$ 1,287,000	$ 407,408,000		$ 407,408,000		$ 403,278,000	$ 11,902,000	$ 9,000,000	$ 2,373,000	$ 2,188,000	$ 2,295,000	$ 2,295,000	$ 7,234,000	$ 4,517,000	$ 1,527,609,000		$ 1,527,609,000		$ 1,420,966,000	$ 92,751,000	$ 80,524,000	$ 58,512,000	$ 61,828,000	$ 706,000	$ 30,000	$ 13,533,000	$ 13,213,000	$ 20,000,000	$ 5,453,000	$ 181,392,000	$ 202,328,000	$ 803,000	$ 423,000	$ 803,000	$ 423,000	$ 564,163,000	$ 540,019,000	$ 13,426,000	$ 13,264,000	$ 2,634,000	$ 786,000	$ 0	$ 11,098,000	$ 0	$ 1,380,000	$ 10,792,000	$ 0		$ 171,000,000	$ 484,000,000		$ 171,000,000	$ 484,000,000			$ 61,000,000	$ 61,000,000							$ 20,000,000	$ 20,000,000																							$ 287,000,000	$ 287,000,000											$ 28,000,000	$ 28,000,000	$ 4,000,000	$ 4,000,000											$ 12,000,000
Rate Matters (Textuals) [Abstract]
Regulatory Assets, Noncurrent	5,139,000,000		5,139,000,000		5,106,000,000	288,000,000	304,000,000	22,000,000	23,000,000	142,000,000	172,000,000	14,000,000	14,000,000	29,000,000	29,000,000	3,000,000	1,000,000	44,000,000	36,000,000	0	11,000,000	14,000,000	13,000,000	20,000,000	5,000,000	1,364,541,000	1,435,704,000	125,104,000	157,560,000	65,206,000	94,458,000	14,155,000	14,155,000	28,777,000	29,320,000	0	5,143,000	3,652,000	1,447,000	8,760,000	8,758,000	3,267,000	2,992,000	1,287,000	1,287,000	407,408,000		407,408,000		403,278,000	11,902,000	9,000,000	2,373,000	2,188,000	2,295,000	2,295,000	7,234,000	4,517,000	1,527,609,000		1,527,609,000		1,420,966,000	92,751,000	80,524,000	58,512,000	61,828,000	706,000	30,000	13,533,000	13,213,000	20,000,000	5,453,000	181,392,000	202,328,000	803,000	423,000	803,000	423,000	564,163,000	540,019,000	13,426,000	13,264,000	2,634,000	786,000	0	11,098,000	0	1,380,000	10,792,000	0		171,000,000	484,000,000		171,000,000	484,000,000			61,000,000	61,000,000							20,000,000	20,000,000																							287,000,000	287,000,000											28,000,000	28,000,000	4,000,000	4,000,000											12,000,000
Unrecognized Equity Carrying Costs																																																																																																																																				3,000,000	3,000,000											11,000,000	11,000,000	4,000,000	4,000,000
Intervenors' Recommended Additional Refund of Excessive Earnings																																																																																																		62,000,000	62,000,000
Future Commitment to Support the Development of a Large Solar Farm																																																																																												20,000,000			20,000,000
Commission Staff's Recommended Refund of Excessive Earnings																																																																																																		23,000,000	23,000,000
Percentage of Standard Service Offer Load Which Registrant Will Conduct an Energy Only Auction for Delivery through May 2015																																																																																												10.00%			10.00%
Additional Percentage of Standard Service Offer Load Which Registrant Will Conduct an Energy Only Auction for Delivery Beginning June 2014 through May 2015																																																																																												50.00%			50.00%
Remaining Percentage of Standard Service Offer Load Which Registrant Will Conduct an Energy Only Auction for Delivery from January 2015 through May 2015																																																																																												40.00%			40.00%
PUCO-Determined Fixed Price per MW Day for Customers Who Switch During ESP Period																																																																																												188.88			188.88
Reliability Pricing Model Rate per MW Day in Effect June 2013 through May 2014																																																																																												33			33
Total Amount Provided by the Retail Stability Rider																																																																																												500,000,000			500,000,000
Retail Stability Rider through May 2014 ($ Per MWh)																																																																																												3.50			3.50
Retail Stability Rider for the Period June 2014 through May 2015 ($ per MWh)																																																																																												4.00			4.00
Amount of Retail Stability Rider Applied to the Deferred Capacity Costs for the Period June 2014 through May 2015 ($ per MWh)																																																																																												1.00			1.00
2008 Coal Contract Settlement Proceeds to be Applied to Deferred Fuel Adjustment Clause as Orginially Ordered by the PUCO																																																																																																						65,000,000	65,000,000
Favorable Fuel Adjustment Recorded in the Second Quarter of 2012 Based on Fuel Adjustment Clause Audit Rehearing																																																																																																						30,000,000	30,000,000
Remaining Retail Gain Not Already Flowed Through Fuel Adjustment Clause																																																																																																						35,000,000	35,000,000
Potential Refund of Carrying Costs																																																																																																								34,000,000	34,000,000
Potential Refund of Unrecognized Equity Carrying Costs																																																																																																								18,000,000	18,000,000
Deferred Fuel Adjustment Clause Related to Ormet Interim Arrangement as of September 2009																																																																																																										64,000,000	64,000,000
Unrecognized Equity Carrying Costs Related to Ormet Interim Arrangement as of September 2009																																																																																																										2,000,000	2,000,000
Ormet's October and November 2012 Power Billings																																																																																																												27,000,000	27,000,000
Maximum Amount of Ormet's October and November 2012 Unpaid Balance Allowed to be Recovered in the Economic Development Rider																																																																																																												20,000,000	20,000,000
Net Receivable Related to the Special Rate Mechanism for Ormet																																																																																																												6,000,000	6,000,000
Collection of Authorized Pre-Construction Costs																																																																																																														24,000,000	24,000,000
Subsidiary's Ownership Percentage																																																																																																																73.00%		73.00%
Asset Impairments and Other Related Charges	154,000,000	0	154,000,000	0																																										0	13,000,000	0	13,000,000										154,304,000	0	154,304,000	0																																																		62,000,000		62,000,000
Property, Plant and Equipment	26,183,000,000		26,183,000,000		26,279,000,000																					5,678,562,000	5,632,665,000																			3,919,327,000		3,919,327,000		3,888,230,000									8,363,747,000		8,363,747,000		8,673,296,000											1,374,411,000	1,346,530,000					4,130,327,000	4,062,733,000																															1,800,000,000	118,000,000	1,800,000,000	118,000,000
Capitalized AFUDC and Interest Excluding Costs Attributable to its Joint Owners																																																																																																																328,000,000		328,000,000
Arkansas Jurisdictional Share of the Turk Plant																																																																																																																20.00%		20.00%
The PUCT Required Cap on the Plant, Excluding AFUDC and Related Transmission Costs																																																																																																																1,522,000,000		1,522,000,000
The PUCT Required Cap on CO2 Emission Costs (per ton)																																																																																																																28		28
Requested Base Rate Increase																																																																																																																				83,000,000			83,000,000																																					114,000,000
Requested Return on Equity																																																																																																																				11.25%			11.25%																																					10.65%
Texas Jurisdictional Share of the Turk Plant																																																																																																																				33.00%			33.00%
Intervenors' Recommended Base Rate Increase																																																																																																																					16,000,000	51,000,000		16,000,000	51,000,000
Intervenors' Recommended Return on Equity																																																																																																																					9.00%	9.55%		9.00%	9.55%
Proposal for Decision Recommended Annual Base Rate Increase																																																																																																																				41,000,000			41,000,000
Proposal for Decision Recommended Return on Equity																																																																																																																				9.65%			9.65%
Estimated Write Off that Could Result from the Proposal for Decision Recommended Disallowance of Certain Turk Plant Capital Costs																																																																																																																				74,000,000			74,000,000
Louisiana Jurisdictional Share of the Turk Plant																																																																																																																										29.00%	29.00%
Increase in Louisiana Total Rates per the Settlement Agreement																																																																																																																										2,000,000	2,000,000
Base Rate Increase per the Settlement Agreement																																																																																																																										85,000,000	85,000,000
Fuel Rate Decrease per the Settlement Agreement																																																																																																																										83,000,000	83,000,000
Return on Common Equity per the Settlement Agreement																																																																																																																										10.00%	10.00%
Projected Capital Costs																																																																																																																												408,000,000	408,000,000													1,200,000,000	1,200,000,000									285,000,000		142,000,000
Subsidary's Portion of Projected Capital Costs																																																																																																																												204,000,000	204,000,000
Construction Work in Progress	2,173,000,000		2,173,000,000		1,819,000,000																					241,215,000	266,247,000																			153,715,000		153,715,000		99,783,000									409,751,000		409,751,000		354,497,000											101,119,000	95,170,000					370,384,000	341,063,000																																											24,000,000	24,000,000													240,000,000	240,000,000									77,000,000		39,000,000
Amount of Deferred Preconstruction IGCC Costs for Future Recovery																																																																																																																														9,000,000	9,000,000	2,000,000	2,000,000	10,000,000	10,000,000
Requested Recovery Of 2011 and 2012 Environmental Compliance Costs																																																																																																																																																39,000,000	39,000,000
Requested Increase in Virginia Generation RAC Revenues Related to the Dresden Plant																																																																																																																																																		12,000,000	12,000,000
Total Annual Increase to Collect Costs Related to the Dresden Plant																																																																																																																																																		38,000,000	38,000,000
Requested Expanded Net Energy Charge Securitization																																																																																																																																				422,000,000	422,000,000
Requested Other Expanded Net Energy Charge Related Assets																																																																																																																																				13,000,000	13,000,000
Requested Future Financing Costs																																																																																																																																				7,000,000	7,000,000
Recommended Securitization Amount Per Settlement Agreement																																																																																																																																				376,000,000	376,000,000
Other Expanded Net Energy Charge Related Assets																																																																																																																																				15,000,000	15,000,000
Write-off of Regulatory Asset, Pretax																																																																																																																																																										30,000,000	30,000,000
Proposed Cost Recovery of New Environmental Investment at Northeastern Station Unit 3																																																																																																																																						210,000,000		210,000,000
Excluded AFUDC and Overheads from Proposed Cost Recovery of Northeastern Station Unit 3																																																																																																																																						46,000,000		46,000,000
Net Book Value of Northeastern Station, Units 3 and 4																																																																																																																																							231,000,000		231,000,000
Proposed Cost Recovery of New Investment at Various Gas Units																																																																																																																																						83,000,000		83,000,000
Proposed Annual Earnings Component of New Purchase Power Agreement																																																																																																																																						3,000,000		3,000,000
The Corporation Commission of the State of Oklahoma and the Oklahoma Office of the Attorney General Revised Recommended Cost Cap on Northeastern Station Unit 3 Environmental Investment																																																																																																																																						210,000,000		210,000,000
The Corporation Commission of the State of Oklahoma and the Oklahoma Office of the Attorney General Recommended Cost Cap on Northeastern Station Unit 3 Environmental Investment																																																																																																																																						175,000,000		175,000,000
Approved Base Rate Increase																																																																																																																																																								85,000,000	85,000,000
Approved Return On Equity																																																																																																																																																								10.20%	10.20%
Approved Base Rate Increase Adjustment																																																																																																																																																								92,000,000	92,000,000
Amount Excluded from Indiana Utility Regulatory Commission LCM Project Approval																																																																																																																																												23,000,000	23,000,000
Revised Projected Capital Costs per Settlement Agreement																																																																																																																																																					258,000,000		129,000,000
Federal Mandate Percentage of Project to be Recovered Under a Rider per Settlement Agreement																																																																																																																																																					80.00%		80.00%
Percentage of Project to be Deferred and Recovered in a Future Rate Case per Settlement Agreement																																																																																																																																																					20.00%		20.00%
Deferred Charges and Other Noncurrent Assets	1,581,000,000		1,581,000,000		1,627,000,000																					109,465,000	115,078,000																			100,880,000		100,880,000		76,432,000									193,947,000		193,947,000		320,026,000											27,927,000	8,560,000					117,327,000	111,364,000																																																													28,000,000															28,000,000
Annual Amount of Asset Transfer Rider																																																																																																																																															44,000,000
Annual Level of Off System Sales Margins in Base Rates Above Which is Proposed to be Retained by Kentucky Power Company																																																																																																																																															15,300,000
Total Deferrals Requested																																																																																																																																																												$ 48,000,000