Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended															12 Months Ended																				12 Months Ended				12 Months Ended												12 Months Ended													12 Months Ended				12 Months Ended				12 Months Ended											12 Months Ended		12 Months Ended								12 Months Ended														12 Months Ended									12 Months Ended							2 Months Ended		12 Months Ended										10 Months Ended				12 Months Ended					12 Months Ended									12 Months Ended				2 Months Ended	12 Months Ended		2 Months Ended		12 Months Ended				10 Months Ended		10 Months Ended		12 Months Ended		12 Months Ended						12 Months Ended			2 Months Ended	12 Months Ended		2 Months Ended		12 Months Ended				10 Months Ended
	Dec. 31, 2012 Integer		Dec. 31, 2011 Integer		Dec. 31, 2010		Dec. 31, 2009	Dec. 31, 2012 Fuel [Member]	Dec. 31, 2011 Fuel [Member]	Dec. 31, 2012 Natural Gas Stored Underground [Member]		Dec. 31, 2011 Natural Gas Stored Underground [Member]		Dec. 31, 2012 Material And Supplies [Member]	Dec. 31, 2011 Material And Supplies [Member]	Dec. 31, 2012 Regulated Utility Plant [Member]	Dec. 31, 2011 Regulated Utility Plant [Member]	Dec. 31, 2012 Nonregulated Property Plant And Equipment Generation [Member]	Dec. 31, 2011 Nonregulated Property Plant And Equipment Generation [Member]	Dec. 31, 2012 Margin Deposits Posted To Counterparties [Member]	Dec. 31, 2011 Margin Deposits Posted To Counterparties [Member]	Dec. 31, 2012 Cash Collateral Posted To Counterparties [Member]	Dec. 31, 2011 Cash Collateral Posted To Counterparties [Member]	Dec. 31, 2012 Low Carbon Network Fund [Member]		Dec. 31, 2011 Low Carbon Network Fund [Member]		Dec. 31, 2012 Captive Insurance Reserves [Member]		Dec. 31, 2011 Captive Insurance Reserves [Member]		Dec. 31, 2012 Funds Deposited With Trustee [Member]		Dec. 31, 2011 Funds Deposited With Trustee [Member]		Dec. 31, 2012 Ironwood Debt Service Reserves [Member]	Dec. 31, 2011 Ironwood Debt Service Reserves [Member]	Dec. 31, 2012 Other Restricted Cash [Member]	Dec. 31, 2011 Other Restricted Cash [Member]	Dec. 31, 2012 Allowance For Doubtful Accounts [Member]		Dec. 31, 2011 Allowance For Doubtful Accounts [Member]		Dec. 31, 2010 Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 Unaffiliated Third Party Entity [Member]	Dec. 31, 2011 Unaffiliated Third Party Entity [Member]	Dec. 31, 2010 Unaffiliated Third Party Entity [Member]	Dec. 31, 2012 Other Comprehensive Income [Member]	Dec. 31, 2011 Other Comprehensive Income [Member]	Dec. 31, 2010 Other Comprehensive Income [Member]	Dec. 31, 2012 KU [Member] Electric Energy Inc [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Integer	Dec. 31, 2011 PPL Energy Supply LLC [Member]	Dec. 31, 2010 PPL Energy Supply LLC [Member]	Dec. 31, 2009 PPL Energy Supply LLC [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Fuel [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Fuel [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Natural Gas Stored Underground [Member]		Dec. 31, 2011 PPL Energy Supply LLC [Member] Natural Gas Stored Underground [Member]		Dec. 31, 2012 PPL Energy Supply LLC [Member] Material And Supplies [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Material And Supplies [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Nonregulated Property Plant And Equipment Generation [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Nonregulated Property Plant And Equipment Generation [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Margin Deposits Posted To Counterparties [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Margin Deposits Posted To Counterparties [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Ironwood Debt Service Reserves [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Ironwood Debt Service Reserves [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Other Restricted Cash [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Other Restricted Cash [Member]	Dec. 31, 2012 PPL Energy Supply LLC [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2011 PPL Energy Supply LLC [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2010 PPL Energy Supply LLC [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 PPL Energy Supply LLC [Member] Other Comprehensive Income [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Other Comprehensive Income [Member]	Dec. 31, 2010 PPL Energy Supply LLC [Member] Other Comprehensive Income [Member]	Dec. 31, 2011 PPL Energy Supply LLC [Member] Distribution Of Membership Interest In PPL Global [Member]		Dec. 31, 2012 PPL Electric Utilities Corp [Member]	Dec. 31, 2011 PPL Electric Utilities Corp [Member]	Dec. 31, 2012 PPL Electric Utilities Corp [Member] Regulated Utility Plant [Member]	Dec. 31, 2011 PPL Electric Utilities Corp [Member] Regulated Utility Plant [Member]	Dec. 31, 2012 PPL Electric Utilities Corp [Member] Funds Deposited With Trustee [Member]		Dec. 31, 2011 PPL Electric Utilities Corp [Member] Funds Deposited With Trustee [Member]		Dec. 31, 2012 PPL Electric Utilities Corp [Member] Other Restricted Cash [Member]	Dec. 31, 2011 PPL Electric Utilities Corp [Member] Other Restricted Cash [Member]	Dec. 31, 2012 PPL Electric Utilities Corp [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2011 PPL Electric Utilities Corp [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2010 PPL Electric Utilities Corp [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 PPL Electric Utilities Corp [Member] Unaffiliated Third Party Entity [Member]	Dec. 31, 2011 PPL Electric Utilities Corp [Member] Unaffiliated Third Party Entity [Member]	Dec. 31, 2010 PPL Electric Utilities Corp [Member] Unaffiliated Third Party Entity [Member]	Dec. 31, 2012 PPL Electric Utilities Corp [Member] Affiliated Entity [Member]	Dec. 31, 2011 PPL Electric Utilities Corp [Member] Affiliated Entity [Member]	Dec. 31, 2010 PPL Electric Utilities Corp [Member] Affiliated Entity [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member] Integer	Dec. 31, 2011 LG And E And KU Energy LLC [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member] Ohio Valley Electric Corporation [Member] Integer	Dec. 31, 2012 LG And E And KU Energy LLC [Member] Fuel [Member]	Dec. 31, 2011 LG And E And KU Energy LLC [Member] Fuel [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member] Natural Gas Stored Underground [Member]		Dec. 31, 2011 LG And E And KU Energy LLC [Member] Natural Gas Stored Underground [Member]		Dec. 31, 2012 LG And E And KU Energy LLC [Member] Material And Supplies [Member]	Dec. 31, 2011 LG And E And KU Energy LLC [Member] Material And Supplies [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member] Regulated Utility Plant [Member]	Dec. 31, 2011 LG And E And KU Energy LLC [Member] Regulated Utility Plant [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member] Cash Collateral Posted To Counterparties [Member]	Dec. 31, 2011 LG And E And KU Energy LLC [Member] Cash Collateral Posted To Counterparties [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member] Successor [Member]	Dec. 31, 2011 LG And E And KU Energy LLC [Member] Successor [Member]	Dec. 31, 2010 LG And E And KU Energy LLC [Member] Successor [Member]	Dec. 31, 2010 LG And E And KU Energy LLC [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 LG And E And KU Energy LLC [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2011 LG And E And KU Energy LLC [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 LG And E And KU Energy LLC [Member] Successor [Member] Other Comprehensive Income [Member]	Dec. 31, 2011 LG And E And KU Energy LLC [Member] Successor [Member] Other Comprehensive Income [Member]	Dec. 31, 2010 LG And E And KU Energy LLC [Member] Successor [Member] Other Comprehensive Income [Member]	Dec. 31, 2010 LG And E And KU Energy LLC [Member] Successor [Member] Effect Of PPL Acquisition [Member]	Oct. 31, 2010 LG And E And KU Energy LLC [Member] Predecessor [Member]	Dec. 31, 2009 LG And E And KU Energy LLC [Member] Predecessor [Member]	Oct. 31, 2010 LG And E And KU Energy LLC [Member] Predecessor [Member] Allowance For Doubtful Accounts [Member]		Oct. 31, 2010 LG And E And KU Energy LLC [Member] Predecessor [Member] Other Comprehensive Income [Member]	Oct. 31, 2010 LG And E And KU Energy LLC [Member] Predecessor [Member] Disposal Of Discontinued Operations [Member]	Dec. 31, 2012 LG And E And KU Energy LLC [Member] LGE [Member] Ohio Valley Electric Corporation [Member] MW	Dec. 31, 2012 LG And E And KU Energy LLC [Member] KU [Member] Ohio Valley Electric Corporation [Member] MW	Dec. 31, 2012 LG And E And KU Energy LLC [Member] KU [Member] Electric Energy Inc [Member]	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Integer	Dec. 31, 2011 Louisville Gas And Electric Co [Member]	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Ohio Valley Electric Corporation [Member] Integer MW	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Fuel [Member]	Dec. 31, 2011 Louisville Gas And Electric Co [Member] Fuel [Member]	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Natural Gas Stored Underground [Member]		Dec. 31, 2011 Louisville Gas And Electric Co [Member] Natural Gas Stored Underground [Member]		Dec. 31, 2012 Louisville Gas And Electric Co [Member] Material And Supplies [Member]	Dec. 31, 2011 Louisville Gas And Electric Co [Member] Material And Supplies [Member]	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Regulated Utility Plant [Member]	Dec. 31, 2011 Louisville Gas And Electric Co [Member] Regulated Utility Plant [Member]	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Cash Collateral Posted To Counterparties [Member]	Dec. 31, 2011 Louisville Gas And Electric Co [Member] Cash Collateral Posted To Counterparties [Member]	Dec. 31, 2010 Louisville Gas And Electric Co [Member] Successor [Member]	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Successor [Member]	Dec. 31, 2011 Louisville Gas And Electric Co [Member] Successor [Member]	Dec. 31, 2010 Louisville Gas And Electric Co [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 Louisville Gas And Electric Co [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2011 Louisville Gas And Electric Co [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Oct. 31, 2010 Louisville Gas And Electric Co [Member] Predecessor [Member]	Dec. 31, 2009 Louisville Gas And Electric Co [Member] Predecessor [Member]	Oct. 31, 2010 Louisville Gas And Electric Co [Member] Predecessor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 Kentucky Utilities Co [Member] Integer	Dec. 31, 2011 Kentucky Utilities Co [Member]	Dec. 31, 2012 Kentucky Utilities Co [Member] Ohio Valley Electric Corporation [Member] Integer MW	Dec. 31, 2012 Kentucky Utilities Co [Member] Electric Energy Inc [Member]	Dec. 31, 2012 Kentucky Utilities Co [Member] Fuel [Member]	Dec. 31, 2011 Kentucky Utilities Co [Member] Fuel [Member]	Dec. 31, 2012 Kentucky Utilities Co [Member] Material And Supplies [Member]	Dec. 31, 2011 Kentucky Utilities Co [Member] Material And Supplies [Member]	Dec. 31, 2012 Kentucky Utilities Co [Member] Regulated Utility Plant [Member]	Dec. 31, 2011 Kentucky Utilities Co [Member] Regulated Utility Plant [Member]	Oct. 31, 2010 Kentucky Utilities Co [Member] Effect Of PPL Acquisition [Member]	Dec. 31, 2010 Kentucky Utilities Co [Member] Successor [Member]	Dec. 31, 2012 Kentucky Utilities Co [Member] Successor [Member]	Dec. 31, 2011 Kentucky Utilities Co [Member] Successor [Member]	Dec. 31, 2010 Kentucky Utilities Co [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2012 Kentucky Utilities Co [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Dec. 31, 2011 Kentucky Utilities Co [Member] Successor [Member] Allowance For Doubtful Accounts [Member]		Oct. 31, 2010 Kentucky Utilities Co [Member] Predecessor [Member]	Oct. 31, 2010 Kentucky Utilities Co [Member] Predecessor [Member] Allowance For Doubtful Accounts [Member]
Summary Of Significant Accounting Policies [Line Items]
Period of lag in reporting results for WPD Midlands (in months)	1
Months of operating results included in PPL's results for WPD Midlands for a specific period			8
Period, in years, in which the price control formula is normally reviewed	5
Comprehensive Income (Details) [Abstract]
Foreign currency translation adjustments	$ (149,000,000)		$ (243,000,000)		$ (195,000,000)		$ (136,000,000)																																										$ 94,000,000	$ (48,000,000)	$ (59,000,000)				$ (195,000,000)	$ (136,000,000)																									$ (59,000,000)	$ 195,000,000	[1]																																																				$ 11,000,000				$ (11,000,000)
Available-for-sale securities	110,000,000		88,000,000		86,000,000		62,000,000																																										22,000,000	2,000,000	24,000,000		110,000,000	88,000,000	86,000,000	62,000,000																							22,000,000	2,000,000	24,000,000
Qualifying derivatives	132,000,000		527,000,000		695,000,000		602,000,000																																										(395,000,000)	(168,000,000)	93,000,000		210,000,000	605,000,000	732,000,000	573,000,000																							(395,000,000)	(86,000,000)	159,000,000	(41,000,000)	[1]																																																		(4,000,000)	4,000,000	(6,000,000)			10,000,000																													10,000,000
Equity investees' OCI	3,000,000		1,000,000		(2,000,000)		(2,000,000)																																										2,000,000	3,000,000			1,000,000	1,000,000	(2,000,000)	(2,000,000)																								3,000,000																																									1,000,000									1,000,000			2,000,000	(2,000,000)				(2,000,000)																																											2,000,000										2,000,000
Defined benefits plans:
Prior service cost	(14,000,000)		(25,000,000)		(32,000,000)		(61,000,000)																																										11,000,000	7,000,000	29,000,000		(10,000,000)	(16,000,000)	(23,000,000)	(44,000,000)																							6,000,000	2,000,000	21,000,000	5,000,000	[1]																																						(2,000,000)	(2,000,000)									(2,000,000)		11,000,000	(11,000,000)	(12,000,000)			1,000,000
Actuarial loss	(2,023,000,000)		(1,137,000,000)		(1,032,000,000)		(993,000,000)																																										(886,000,000)	(105,000,000)	(39,000,000)		(263,000,000)	(191,000,000)	(953,000,000)	(930,000,000)																							(72,000,000)	(18,000,000)	(23,000,000)	780,000,000	[1]																																						(14,000,000)	6,000,000	6,000,000							(20,000,000)		6,000,000	55,000,000	(55,000,000)	(36,000,000)			(19,000,000)
Transition asset (obligation)	1,000,000		1,000,000		1,000,000		(9,000,000)																																												10,000,000					(7,000,000)																									7,000,000
Total Accumulated Other Comprehensive Loss, Net of Tax	(1,940,000,000)		(788,000,000)		(479,000,000)		(537,000,000)																																										(1,152,000,000)	(309,000,000)	58,000,000		48,000,000	487,000,000	(355,000,000)	(484,000,000)																							(439,000,000)	(97,000,000)	129,000,000	939,000,000	[1]																																						(15,000,000)	4,000,000	6,000,000							(19,000,000)	(2,000,000)	6,000,000	64,000,000	(64,000,000)	(43,000,000)			(10,000,000)	(11,000,000)																												10,000,000	(10,000,000)			1,000,000																				2,000,000
Utility Revenue (Details) [Abstract]
Domestic electric revenue	4,519,000,000	[2]	4,674,000,000	[2]	2,941,000,000	[2]
U.K. electric revenue	2,289,000,000	[3]	1,618,000,000	[3]	727,000,000	[3]
Total	6,808,000,000		6,292,000,000		3,668,000,000																																																																																																																																																									233,000,000	1,247,000,000	1,281,000,000							978,000,000															261,000,000	1,512,000,000	1,512,000,000							1,235,000,000
Revenue Recognition (Numeric) [Abstract]
Costs in excess of billings on uncompleted contracts or programs	12,000,000		15,000,000																																																		12,000,000	15,000,000
Billings in excess of cost	70,000,000		59,000,000																																																		70,000,000	59,000,000
Accounts Receivable (Numeric) [Abstract]
Purchases of accounts receivable																																														848,000,000	875,000,000	617,000,000																																																				848,000,000	875,000,000	617,000,000	313,000,000	264,000,000	215,000,000
Allowance for Doubtful Accounts (Details) [Roll Forward]
Balance at beginning of period																																								54,000,000		55,000,000	[4]	37,000,000																													15,000,000		20,000,000		21,000,000																	17,000,000		17,000,000		16,000,000																												17,000,000		17,000,000								4,000,000																											2,000,000		2,000,000				2,000,000																		2,000,000		6,000,000			3,000,000
Additions charged to income																																								55,000,000	[5]	65,000,000	[6]	42,000,000	[4]																												12,000,000	[5]	14,000,000	[6]	1,000,000																	32,000,000		33,000,000		30,000,000																										10,000,000		9,000,000		15,000,000								10,000,000																									1,000,000		2,000,000		5,000,000				4,000,000																1,000,000		4,000,000		6,000,000			6,000,000
Additions charged to other accounts																																												7,000,000	[4],[7]																																																																															7,000,000	[7]																																				2,000,000	[7]																							6,000,000	[7]
Deductions																																								45,000,000	[8]	66,000,000	[5],[8]	31,000,000	[8]																												4,000,000	[8]	19,000,000	[5],[8]	2,000,000	[8]																31,000,000	[8]	33,000,000	[8]	29,000,000	[8]																										[8]	7,000,000	[8]	15,000,000	[8]							10,000,000	[8]																								1,000,000	[8]	3,000,000	[8]	5,000,000	[8]			4,000,000	[8]															1,000,000	[8]	4,000,000	[8]	10,000,000	[8]		6,000,000	[8]
Balance at end of period																																								64,000,000		54,000,000		55,000,000	[4]																												23,000,000		15,000,000		20,000,000																	18,000,000		17,000,000		17,000,000																										17,000,000		19,000,000		17,000,000								4,000,000																									2,000,000		1,000,000		2,000,000				2,000,000																6,000,000		2,000,000		2,000,000			3,000,000
Cash (Numeric) [Abstract]
Maximum maturity period for highly liquid debt instruments to be considered cash equivalents (in months)	3																																			17,000,000																	3																17,000,000																																					3																																					3																												3
Restricted Cash and Cash Equivalents (Numeric) [Line Items]
Restricted cash and cash equivalents	135,000,000		209,000,000																	43,000,000	137,000,000	32,000,000	29,000,000	14,000,000	[9]	9,000,000	[9]	6,000,000	[10]	6,000,000	[10]	13,000,000	[11]	12,000,000	[11]			10,000,000	16,000,000														63,000,000	145,000,000													43,000,000	137,000,000			3,000,000	8,000,000												13,000,000	13,000,000			13,000,000	[11]	12,000,000	[11]		1,000,000													32,000,000	29,000,000												32,000,000	29,000,000																							32,000,000	29,000,000												32,000,000	29,000,000
Equity Method Investment [Abstract]
Ownership percentage																																																				20.00%																																																																																										20.00%																																20.00%
Income (loss) from investment																																																				8,000,000																																																																																										8,000,000																																8,000,000
Impairment charge																																																				25,000,000																																																																																										25,000,000																																25,000,000
Impairment charge, after-tax																																																				15,000,000																																																																																										15,000,000																																15,000,000
Equity Method Investments																																																				0																																																																																										0																														31,000,000		0
Cost Method Investments [Abstract]
Number of electric utilities that are equity owners																																																																																																												10																																					10																												10
Number of companies power is supplied to																																																																																																												11																																					11																												11
Ownership percentage																																																																																																																																												5.63%	2.50%				5.63%																												2.50%
Generation capacity in terms of ownership percentage (in MW)																																																																																																																																												134	60				134																												60
Property, Plant and Equipment (Numeric) [Abstract]
Interest costs, capitalized during the period	53,000,000		51,000,000		30,000,000																																																47,000,000	47,000,000	33,000,000
Depreciation (Details) [Abstract]
Weighted-average rates																3.12%	3.03%	3.05%	2.88%																																														3.05%	2.88%																				2.57%	2.49%																														4.39%	4.54%																																				4.91%	5.11%																								4.06%	4.17%
Reduction in depreciation expense in 2013 as a result of lower weighted-average rates	19,000,000																																																																																																									19,000,000																																					9,000,000																												10,000,000
Defined Benefits [Abstract]
Difference between the actual value of plan assets and the expected value	20.00%																																																				20.00%																															20.00%																						20.00%																																					20.00%																												20.00%
The expected average remaining service of active plan participants	50.00%																																																				50.00%																															50.00%																						50.00%																																					50.00%																												50.00%
Minimum percentage of gains and losses under the accelerated method that are amortized on a straight line basis	10.00%																																																				10.00%																															10.00%																						10.00%																																					10.00%																												10.00%
Maximum percentage of gains and losses under the accelerated that are amortized on a straight line basis	30.00%																																																				30.00%																															30.00%																						30.00%																																					30.00%																												30.00%
Percentage in excess of gains and losses equal to the plan's projected benefit obligation to use accelerated amortization	30.00%																																																				30.00%																															30.00%																						30.00%																																					30.00%																												30.00%
Income Taxes [Abstract]
Minimum percentage to be attained of likelihood of uncertain tax position being realized	50.00%																																																				50.00%																															50.00%																						50.00%																																					50.00%																												50.00%
Intercompany tax receivables (payables)																																																					(38,000,000)	(50,000,000)																														22,000,000	22,000,000																					(12,000,000)	3,000,000																																				5,000,000	4,000,000																											(15,000,000)	5,000,000
Fuel, Materials and Supplies (Details) [Line Items]
Fuel, materials and supplies on the Balance Sheet								$ 284,000,000	$ 246,000,000	$ 50,000,000	[12]	$ 73,000,000	[12]	$ 339,000,000	$ 335,000,000																																										$ 135,000,000	$ 96,000,000	$ 8,000,000	[12]	$ 20,000,000	[12]	$ 184,000,000	$ 182,000,000																																													$ 149,000,000	$ 150,000,000	$ 42,000,000	[12]	$ 53,000,000	[12]	$ 85,000,000	$ 80,000,000																														$ 61,000,000	$ 53,000,000	$ 42,000,000	[12]	$ 53,000,000	[12]	$ 39,000,000	$ 36,000,000																						$ 88,000,000	$ 97,000,000	$ 46,000,000	$ 44,000,000

[1] See Note 9 for additional information.

[2] Represents revenue from regulated generation, transmission and/or distribution in Pennsylvania, Kentucky, Virginia and Tennessee, including regulated wholesale revenue. 2010 includes two months of revenue for LKE.

[3] Represents electric distribution revenue from the operation of WPD's distribution networks. 2011 includes eight months of revenue for WPD Midlands.

[4] Includes amounts associated with LKE activity since the November 1, 2010 acquisition date. See Note 10 for additional information related to the acquisition of LKE.

[5] Includes amounts related to the June 2011, FERC approved settlement agreement between PPL and the California ISO related to the sales made to the California ISO during the period October 2000 through June 2001 that were not paid to PPL subsidiaries. Therefore, the receivable and the related allowance for doubtful accounts were reversed and the settlement recorded.

[6] Includes amounts related to the SMGT bankruptcy. See Note 15 for additional information.

[7] Primarily related to capital projects, thus the provision was recorded as an adjustment to construction work in progress.

[8] Primarily related to uncollectible accounts written off.

[9] Funds received by WPD, which are to be spent on approved initiatives to support a low carbon environment.

[10] Funds required by law to be held by WPD's captive insurance company to meet claims.

[11] Funds deposited with a trustee to defease PPL Electric's 1945 First Mortgage Bonds.

[12] The majority of LKE's and LG&E's natural gas stored underground is held to serve native load. The majority of PPL Energy Supply's natural gas stored underground is available for resale.