Rate Matters (Details) (USD $)											6 Months Ended																			6 Months Ended															3 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											6 Months Ended									6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2011 Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2012 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning Return [Member]	Dec. 31, 2011 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning Return [Member]	Jun. 30, 2012 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Mountaineer Carbon Capture and Storage Product Validation Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Mountaineer Carbon Capture and Storage Product Validation Facility [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Virginia Environmental Rate Adjustment Clause [Member]	Jun. 30, 2012 Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Virginia Deferred Wind Power Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Virginia Deferred Wind Power Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Special Rate Mechanism for Century Aluminum [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Special Rate Mechanism for Century Aluminum [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning Return [Member]	Dec. 31, 2011 Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning Return [Member]	Jun. 30, 2012 Appalachian Power Co [Member]	Dec. 31, 2011 Appalachian Power Co [Member]	Jun. 30, 2012 Appalachian Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2011 Appalachian Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 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 Return [Member]	Dec. 31, 2011 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 Return [Member]	Jun. 30, 2012 Appalachian Power Co [Member] Virginia Environmental Rate Adjustment Clause [Member]	Jun. 30, 2012 Appalachian Power Co [Member] Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Appalachian Power Co [Member] Virginia Environmental Rate Adjustment Clause [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Appalachian Power Co [Member] Virginia Deferred Wind Power Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Appalachian Power Co [Member] Virginia Deferred Wind Power Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Appalachian Power Co [Member] Special Rate Mechanism for Century Aluminum [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Appalachian Power Co [Member] Special Rate Mechanism for Century Aluminum [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 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 Return [Member]	Dec. 31, 2011 Appalachian Power Co [Member] Other Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Appalachian Power Co [Member] Dresden Operating Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Appalachian Power Co [Member] Dresden Operating Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Appalachian Power Co [Member] Transmission Agreement Phase-In [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Appalachian Power Co [Member] Transmission Agreement Phase-In [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 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 Return [Member]	Dec. 31, 2011 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 Return [Member]	Jun. 30, 2012 Southwestern Electric Power Co [Member]	Jun. 30, 2011 Southwestern Electric Power Co [Member]	Jun. 30, 2012 Southwestern Electric Power Co [Member]	Jun. 30, 2011 Southwestern Electric Power Co [Member]	Dec. 31, 2011 Southwestern Electric Power Co [Member]	Jun. 30, 2012 Southwestern Electric Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2011 Southwestern Electric Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 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 Return [Member]	Dec. 31, 2011 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 Return [Member]	Jun. 30, 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 Return [Member]	Dec. 31, 2011 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 Return [Member]	Jun. 30, 2012 Southwestern Electric Power Co [Member] Rate Case Expenses [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Southwestern Electric Power Co [Member] Rate Case Expenses [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Ohio Power Co [Member]	Dec. 31, 2011 Ohio Power Co [Member]	Jun. 30, 2012 Ohio Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2011 Ohio Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 2012 Ohio Power Co [Member] Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Ohio Power Co [Member] Storm Costs [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 2012 Ohio Power Co [Member] Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning Return [Member]	Dec. 31, 2011 Ohio Power Co [Member] Economic Development Rider [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Earning Return [Member]	Jun. 30, 2012 Public Service Co Of Oklahoma [Member]	Dec. 31, 2011 Public Service Co Of Oklahoma [Member]	Jun. 30, 2012 Indiana Michigan Power Co [Member]	Dec. 31, 2011 Indiana Michigan Power Co [Member]	Jun. 30, 2012 Indiana Michigan Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Dec. 31, 2011 Indiana Michigan Power Co [Member] Regulatory Assets Not Yet Being Recovered [Member]	Jun. 30, 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 Return [Member]	Dec. 31, 2011 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 Return [Member]	Jun. 30, 2012 Indiana Michigan Power Co [Member] Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Dec. 31, 2011 Indiana Michigan Power Co [Member] Litigation Settlement [Member] Regulatory Assets Not Yet Being Recovered [Member] Regulatory Assets Currently Not Earning Return [Member]	Jun. 30, 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 Return [Member]	Dec. 31, 2011 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 Return [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member]	Jul. 27, 2012 Ohio Electric Security Plan Filing [Member] Capacity Cost Cap [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Storm Costs [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Deferred Fuel Costs [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Ohio Power Co [Member]	Jul. 27, 2012 Ohio Electric Security Plan Filing [Member] Ohio Power Co [Member] Capacity Cost Cap [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Ohio Power Co [Member] Storm Costs [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Ohio Power Co [Member] Deferred Fuel Costs [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Significantly Excessive Earnings Test - 2009 [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Significantly Excessive Earnings Test - 2009 [Member] Ohio Power Co [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Significantly Excessive Earnings Test - 2010 [Member]	Jun. 30, 2012 Ohio Electric Security Plan Filing [Member] Significantly Excessive Earnings Test - 2010 [Member] Ohio Power Co [Member]	Jun. 30, 2012 Ohio Distribution Base Rate Case [Member]	Jun. 30, 2012 Ohio Distribution Base Rate Case [Member] Ohio Power Co [Member]	Jun. 30, 2012 Ohio Fuel Adjustment Clause Audit - 2009 [Member]	Jun. 30, 2012 Ohio Fuel Adjustment Clause Audit - 2009 [Member] Ohio Power Co [Member]	Jun. 30, 2012 Ohio Fuel Adjustment Clause Audit - 2010 and 2011 [Member]	Jun. 30, 2012 Ohio Fuel Adjustment Clause Audit - 2010 and 2011 [Member] Ohio Power Co [Member]	Jun. 30, 2012 Ormet Interim Arrangement [Member]	Jun. 30, 2012 Ormet Interim Arrangement [Member] Ohio Power Co [Member]	Jun. 30, 2012 Ohio IGCC Plant [Member]	Jun. 30, 2012 Ohio IGCC Plant [Member] Ohio Power Co [Member]	Jun. 30, 2012 Turk Plant [Member]	Jun. 30, 2012 Turk Plant [Member] Electric Transmission [Member]	Jun. 30, 2012 Turk Plant [Member] Southwestern Electric Power Co [Member]	Jun. 30, 2012 Turk Plant [Member] Southwestern Electric Power Co [Member] Electric Transmission [Member]	Jul. 27, 2012 Texas Base Rate Case [Member] Base Rate Increase [Member]	Jul. 27, 2012 Texas Base Rate Case [Member] Return on Equity [Member]	Jul. 27, 2012 Texas Base Rate Case [Member] Southwestern Electric Power Co [Member] Base Rate Increase [Member]	Jul. 27, 2012 Texas Base Rate Case [Member] Southwestern Electric Power Co [Member] Return on Equity [Member]	Jun. 30, 2012 Louisiana 2010 Formula Rate Filing [Member] Southwestern Electric Power Co [Member]	Jun. 30, 2012 Virginia Fuel Filing [Member]	Jun. 30, 2012 Virginia Fuel Filing [Member] Appalachian Power Co [Member]	Jun. 30, 2012 APCo's Filing for IGCC Plant [Member] Applicable to West Virginia Jurisdiction [Member]	Jun. 30, 2012 APCo's Filing for IGCC Plant [Member] Applicable to West Virginia Jurisdiction [Member] Appalachian Power Co [Member]	Jun. 30, 2012 APCo's Filing for IGCC Plant [Member] Applicable to FERC Jurisdiction [Member]	Jun. 30, 2012 APCo's Filing for IGCC Plant [Member] Applicable to FERC Jurisdiction [Member] Appalachian Power Co [Member]	Jun. 30, 2012 APCo's Filing for IGCC Plant [Member] Applicable to Virginia Jurisdiction [Member]	Jun. 30, 2012 APCo's Filing for IGCC Plant [Member] Applicable to Virginia Jurisdiction [Member] Appalachian Power Co [Member]	Jun. 30, 2012 West Virginia Expanded Net Energy Charge [Member]	Jun. 30, 2012 West Virginia Expanded Net Energy Charge [Member] Appalachian Power Co [Member]	Jun. 30, 2012 West Virginia Expanded Net Energy Charge [Member] Rate Matters Year Four [Member]	Jun. 30, 2012 West Virginia Expanded Net Energy Charge [Member] Rate Matters Year Four [Member] Appalachian Power Co, Wheeling Power Co [Member]	Jun. 30, 2012 Oklahoma Fuel and Purchased Power 2008 [Member]	Jun. 30, 2012 Oklahoma Fuel and Purchased Power 2008 [Member] Public Service Co Of Oklahoma [Member]	Jun. 30, 2012 Indiana Base Rate Case [Member]	Jun. 30, 2012 Indiana Base Rate Case [Member] Indiana Michigan Power Co [Member]	Jun. 30, 2012 Cook Plant Life Cycle Management Project [Member]	Jun. 30, 2012 Cook Plant Life Cycle Management Project [Member] Indiana Michigan Power Co [Member]	Jun. 30, 2012 Big Sandy Unit Two Flue Gas Desulfurization System [Member]	Jun. 30, 2012 Seams Elimination Cost Allocation [Member]	Jun. 30, 2012 Seams Elimination Cost Allocation [Member] Appalachian Power Co [Member]	Jun. 30, 2012 Seams Elimination Cost Allocation [Member] Ohio Power Co [Member]	Jun. 30, 2012 Seams Elimination Cost Allocation [Member] Indiana Michigan Power Co [Member]
Regulatory Assets Not Being Recovered [Abstract]
Regulatory Assets, Noncurrent	$ 5,277,000,000	$ 6,026,000,000	$ 135,000,000	$ 155,000,000	$ 24,000,000	$ 24,000,000	$ 8,000,000	$ 10,000,000	$ 14,000,000	$ 14,000,000		$ 22,000,000	$ 18,000,000	$ 4,000,000	$ 38,000,000	$ 13,000,000	$ 13,000,000	$ 26,000,000	$ 14,000,000	$ 11,000,000	$ 11,000,000	$ 13,000,000	$ 13,000,000	$ 1,404,116,000	$ 1,481,193,000	$ 67,820,000	$ 87,378,000	$ 14,155,000	$ 14,155,000		$ 22,336,000	$ 17,950,000	$ 4,277,000	$ 38,192,000	$ 12,939,000	$ 12,811,000	$ 3,049,000	$ 1,010,000	$ 7,265,000	$ 0	$ 2,510,000	$ 1,925,000	$ 1,289,000	$ 1,335,000	$ 423,048,000		$ 423,048,000		$ 394,276,000	$ 7,064,000	$ 4,079,000	$ 2,006,000	$ 1,699,000	$ 2,298,000	$ 2,380,000	$ 2,760,000	$ 0	$ 1,405,104,000	$ 1,370,504,000	$ 12,892,000	$ 20,947,000	$ 0	$ 8,375,000	$ 12,892,000	$ 12,572,000	$ 254,017,000	$ 266,545,000	$ 599,542,000	$ 602,979,000	$ 12,994,000	$ 12,483,000	$ 658,000	$ 0	$ 10,954,000	$ 10,803,000	$ 1,382,000	$ 1,680,000				$ 538,000,000				$ 538,000,000																																$ 326,000,000	$ 326,000,000
Recognized Gross Seams Elimination Cost Allocation Revenue [Abstract]
Recognized Gross Seams Elimination Cost Allocation Revenue																																																																																																																																220,000,000	70,200,000	92,100,000	41,300,000
Originally Booked Reserve for Net Refund [Abstract]
Originally Booked Reserve for Net Refund																																																																																																																																44,000,000	14,100,000	18,500,000	8,300,000
Reserve for Net Refund [Abstract]
Reserve for Net Refund																																																																																																																																32,000,000	10,000,000	13,200,000	5,900,000
Acceptance of Compliance Filing [Abstract]
Potential Payment if Compliance Filing is Accepted																																																																																																																																20,000,000	6,400,000	8,300,000	3,700,000
Potential Receipt of Payment if Compliance Filing is Accepted																																																																																																																																10,000,000	3,200,000	4,200,000	1,900,000
Rate Matters (Textuals) [Abstract]
Intervenors' Recommended Refund of POLR and Environmental Carrying Charge																																																																														698,000,000				698,000,000
Intervenors' Recommended Additional Refund of Excessive Earnings																																																																																						22,000,000	22,000,000	62,000,000	62,000,000
Commission Staff's Recommended Refund of Excessive Earnings																																																																																								23,000,000	23,000,000
Reversal of Liability Related to Obligation to Contribute to Partnership with Ohio and Ohio Growth Fund																																																																														35,000,000				35,000,000
Reversal of Regulatory Asset																																																																																8,000,000				8,000,000
Tier One Negotiated MW Day Fixed Price for Customers Who Switch During the ESP Period																																																																														146				146
Current MW Day Capacity Cost																																																																														355				355
Tier Two Negotiated MW Day Fixed Price for Customers Who Switch During the ESP Period																																																																														255				255
Proposed Percentage of SSO Load Which Will be Auctioned Through December 2014																																																																														5.00%				5.00%
Percentage of Customer Class Who Will Receive the Tier One Reliability Pricing Model Rate Through December 2012																																																																														21.00%				21.00%
Percentage of Customer Class Who Will Receive the Tier One Reliability Pricing Model Rate Through December 2013																																																																														31.00%				31.00%
Percentage of Customer Class Who Will Receive the Tier One Reliability Pricing Model Rate for Period January 2014 Through May 2015																																																																														41.00%				41.00%
PUCO-Approved Fixed Price for Customers Who Switch During ESP Period																																																																															188.88				188.88
Reliability Pricing Model Rate per MW Day in Effect Through May 2013																																																																														20				20
Regulatory Assets, Noncurrent	5,277,000,000	6,026,000,000	135,000,000	155,000,000	24,000,000	24,000,000	8,000,000	10,000,000	14,000,000	14,000,000		22,000,000	18,000,000	4,000,000	38,000,000	13,000,000	13,000,000	26,000,000	14,000,000	11,000,000	11,000,000	13,000,000	13,000,000	1,404,116,000	1,481,193,000	67,820,000	87,378,000	14,155,000	14,155,000		22,336,000	17,950,000	4,277,000	38,192,000	12,939,000	12,811,000	3,049,000	1,010,000	7,265,000	0	2,510,000	1,925,000	1,289,000	1,335,000	423,048,000		423,048,000		394,276,000	7,064,000	4,079,000	2,006,000	1,699,000	2,298,000	2,380,000	2,760,000	0	1,405,104,000	1,370,504,000	12,892,000	20,947,000	0	8,375,000	12,892,000	12,572,000	254,017,000	266,545,000	599,542,000	602,979,000	12,994,000	12,483,000	658,000	0	10,954,000	10,803,000	1,382,000	1,680,000				538,000,000				538,000,000																																326,000,000	326,000,000
Unrecognized Equity Carrying Costs																																																																																																																					6,000,000	6,000,000
Requested Deferral Threshold for Storm Damage Recovery Mechanism																																																																														5,000,000				5,000,000
Current Vegetation Management Base Used for Calculating Over/Under Recovery on Incremental Vegetation Spend																																																																														21,000,000				21,000,000
Proposed Vegetation Management Base Used for Calculating Over/Under Recovery on Incremental Vegetation Spend																																																																														39,000,000				39,000,000
Increase in Other Operation and Maintenance Expense if PUCO Approves Increase to Vegetation Management Base																																																																														18,000,000				18,000,000
Requested Base Rate Increase																																																																																										94,000,000	94,000,000													83,000,000		83,000,000																	178,000,000	178,000,000
Requested Return on Equity																																																																																										11.15%	11.15%														11.25%		11.25%																11.15%	11.15%
Rider for Annual Credit to Residential Ratepayers																																																																																										15,000,000	15,000,000
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 Based on Fuel Adjustment Clause Audit Rehearing																																																																																												30,000,000	30,000,000
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
Collection of Authorized Pre-Construction Costs																																																																																																		24,000,000	24,000,000
Subsidiary's Ownership Percentage																																																																																																				73.00%		73.00%
Total Current Estimated Generation Costs																																																																																																				1,800,000,000		1,800,000,000
Total Current Estimated Transmission Costs																																																																																																					120,000,000		120,000,000
Subsidiary's Estimated Share of the Generation Cost																																																																																																				1,300,000,000		1,300,000,000
Subsidiary's Estimated Share of the Transmission Costs																																																																																																					120,000,000		120,000,000
Asset Impairments and Other Related Charges																																													13,000,000	0	13,000,000	0																																																				49,000,000		62,000,000
Construction Work in Progress	3,020,000,000	3,121,000,000																						217,902,000	565,841,000																				1,520,783,000		1,520,783,000		1,443,569,000									346,531,000	354,465,000							59,916,000	70,371,000	254,149,000	236,096,000																															1,600,000,000	121,000,000	1,600,000,000	121,000,000																						92,000,000	92,000,000	29,000,000
Subsidiary's Capitalized AFUDC and Interest Excluding Costs Attributable to its Joint Owners																																																																																																				269,000,000		269,000,000
Contractual Construction Obligations of Joint Owners and Subsidiary																																																																																																				65,000,000		65,000,000
Transmission Contractual Construction Obligations of Subsidiary																																																																																																					3,000,000		3,000,000
Subsidiary's Share of the Contractual Construction Obligations																																																																																																				48,000,000		48,000,000
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 Reduction in Rates																																																																																																												3,000,000											34,000,000	34,000,000
Requested Increase in Rates																																																																																																													117,000,000	117,000,000
Approved Cost Recovery											30,000,000																			30,000,000
Write-off of Regulatory Asset, Pretax											31,000,000																			31,000,000
Amount of Deferred Preconstruction IGCC Costs for Future Recovery																																																																																																															9,000,000	9,000,000	2,000,000	2,000,000	9,000,000	9,000,000
Requested Dresden Plant Surcharge																																																																																																																							32,000,000	32,000,000
Requested Increase of Construction Surcharges																																																																																																																							2,000,000	2,000,000
Increase in Construction Surcharge per the Settlement Agreement																																																																																																																							24,000,000	24,000,000
Reduction in Rates per the Settlement Agreement																																																																																																																							24,000,000	24,000,000
Intervenors' Recommended Disallowance of Fuel Costs for the Mountaineer Plant																																																																																																																							14,000,000	14,000,000
Current Shareholder's Percentage of Off-System Sales Margins Sharing																																																																																																																									25.00%	25.00%
The Intervenors' Proposed New Shareholder Percentage of Off-system Sales Margins Sharing																																																																																																																									10.00%	10.00%
Administrative Law Judge Recommended Percentage of Offsystem Sales Margins Sharing																																																																																																																									25.00%	25.00%
Requested Net Base Rate Increase																																																																																																																											149,000,000	149,000,000
Requested Reduction to Off-system Sales Sharing Rider																																																																																																																											13,000,000	13,000,000
Requested Reduction to PJM Cost Rider																																																																																																																											9,000,000	9,000,000
Requested Reduction to Clean Coal Technology Rider																																																																																																																											7,000,000	7,000,000
Requested Increase in Depreciation Expense																																																																																																																											25,000,000	25,000,000
Intervenors' Recommended Base Rate Increase																																																																																																																											28,000,000	28,000,000
Intervenors' Recommended Return on Equity																																																																																																																											9.20%	9.20%
Revised Requested Base Rate Increase																																																																																																																											170,000,000	170,000,000
Projected Capital Costs																																																																																																																													1,200,000,000	1,200,000,000
Recognized Gross Seams Elimination Cost Allocation Revenue																																																																																																																																220,000,000	70,200,000	92,100,000	41,300,000
Originally Booked Reserve for Net Refund																																																																																																																																44,000,000	14,100,000	18,500,000	8,300,000
Amount of Reserve Consumed by Settlements Approved by the FERC																																																																																																																																10,000,000
Amount of FERC Approved Settlements Applicable to SECA Revenue																																																																																																																																112,000,000
Collection of Previously Deemed Uncollectible SECA Revenue																																																																																																																																2,000,000
Reduction of Reserve for Net Refund																																																																																																																																2,000,000
Reserve for Net Refund																																																																																																																																32,000,000	10,000,000	13,200,000	5,900,000
Potential Payment if Compliance Filing is Accepted																																																																																																																																20,000,000	6,400,000	8,300,000	3,700,000
Amount of Estimated Interest Included in Potential Payment																																																																																																																																5,000,000
Potential Receipt of Payment if Compliance Filing is Accepted																																																																																																																																10,000,000	3,200,000	4,200,000	1,900,000
Amount of Estimated Interest Included in Potential Receipt of Payment																																																																																																																																3,000,000
Remaining Amount of Contested SECA Revenues																																																																																																																																$ 108,000,000