Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Summary Of Significant Accounting Policies [Line Items]

Schedule of Utility Revenue

For the years ended December 31, the Statements of Income "Utility" line item contains rate-regulated revenue from the following:

			2014		2013		2012
Domestic electric and gas revenue (a)		$	5,209	$	4,842	$	4,519
U.K. electric revenue (b)			2,573		2,359		2,289
	Total	$	7,782	$	7,201	$	6,808

(a)Represents revenue from cost-based rate-regulated generation, transmission and/or distribution in Pennsylvania, Kentucky, Virginia and Tennessee, including regulated wholesale revenue.

(b)Represents regulated electricity distribution revenue from the operation of WPD's distribution networks.

Schedule of Valuation and Qualifying Accounts Disclosure

The changes in the allowance for doubtful accounts were:

			Additions
	Balance at					Charged to						Balance at
	Beginning of Period		Charged to Income			Other Accounts			Deductions (a)			End of Period
PPL
2014	$	64	$	49					$	67		$	46
2013		64		39		$	4	(c)		43			64
2012		54		55	(b)					45			64
PPL Energy Supply
2014	$	21							$	19	(b)	$	2
2013		23	$	1						3			21
2012		15		12	(b)					4			23
PPL Electric
2014	$	18	$	34					$	35		$	17
2013		18		32						32			18
2012		17		32						31			18

LKE
2014	$	22	$	14				$	11	$	25
2013		19		4	$	4	(c)		5		22
2012		17		9					7		19
LG&E
2014	$	2	$	5	$	(1)	(c)	$	4	$	2
2013		1		2		1	(c)		2		2
2012		2		2					3		1
KU
2014	$	4	$	8	$	(3)	(c)	$	7	$	2
2013		2		3		3	(c)		4		4
2012		2		4					4		2

(a)Primarily related to uncollectible accounts written off.

(b)In 2011, a wholesale customer, SMGT, filed for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy code. In 2012, PPL EnergyPlus recorded an additional allowance for unpaid amounts under the long-term power contract and the U.S. Bankruptcy Court for the District of Montana approved a request to terminate the contract. In 2014, PPL EnergyPlus received an insignificant amount of cash, settling the outstanding administrative claim and therefore, the related reserve balance was offset against the accounts receivable balance.

(c)Primarily related to capital projects, thusthe provision was recorded as an adjustment to construction work in progress.

Schedule of Restricted Cash and Cash Equivalents

At December 31, the balances of restricted cash and cash equivalents included the following.

		PPL				PPL Energy Supply				PPL Electric
		2014		2013		2014		2013		2014		2013
Margin deposits posted to
	counterparties	$	175	$	67	$	175	$	67
Low carbon network fund (a)			19		27
Funds deposited with a trustee					12							$	12
Ironwood debt service reserves			17		17		17		17
Other			13		11		1		1	$	3
		$	224	$	134	$	193	$	85	$	3	$	12

(a)Funds received by WPD, which are to be spent on approved initiatives to support a low carbon environment.

Capitalized Interest Costs

Capitalized interest, excluding AFUDC for PPL, was as follows.

			PPL
	PPL		Energy Supply
2014	$	34	$	23
2013		46		37
2012		53		47

Weighted-average Rates of Depreciation

Following are the weighted-average ratesof depreciation at December 31.

	2014
			PPL
			Energy		PPL
	PPL		Supply		Electric		LKE		LG&E		KU
Regulated utility plant		2.92				2.46		3.80		4.05		3.63
Non-regulated PP&E - Generation		3.28		3.28
	2013
			PPL
			Energy		PPL
	PPL		Supply		Electric		LKE		LG&E		KU
Regulated utility plant		2.94				2.61		4.07		4.52		3.77
Non-regulated PP&E - Generation		3.10		3.10

Schedule of Utility Inventory

"Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31.

		PPL				PPL Energy Supply				LKE				LG&E				KU
		2014		2013		2014		2013		2014		2013		2014		2013		2014		2013
Fuel		$	408	$	305	$	243	$	163	$	166	$	141	$	66	$	64	$	100	$	77
Natural gas stored underground (a)			62		49		7		2		54		48		54		48
Materials and supplies			366		348		205		193		91		89		42		42		49		47
	Total	$	836	$	702	$	455	$	358	$	311	$	278	$	162	$	154	$	149	$	124

(a)The majority of LKE's and LG&E's natural gas stored underground is held to serve retail customers.

PPL Energy Supply LLC [Member]

Summary Of Significant Accounting Policies [Line Items]

Schedule of Restricted Cash and Cash Equivalents

At December 31, the balances of restricted cash and cash equivalents included the following.

		PPL				PPL Energy Supply				PPL Electric
		2014		2013		2014		2013		2014		2013
Margin deposits posted to
	counterparties	$	175	$	67	$	175	$	67
Low carbon network fund (a)			19		27
Funds deposited with a trustee					12							$	12
Ironwood debt service reserves			17		17		17		17
Other			13		11		1		1	$	3
		$	224	$	134	$	193	$	85	$	3	$	12

(a)Funds received by WPD, which are to be spent on approved initiatives to support a low carbon environment.

Capitalized Interest Costs

PPL and PPL Energy Supply capitalize interest costs as part of construction costs. Capitalized interest, excluding AFUDC for PPL, was as follows.

			PPL
	PPL		Energy Supply
2014	$	34	$	23
2013		46		37
2012		53		47

Intercompany tax receivables (payables)

At December 31, the following intercompany tax receivables (payables) were recorded.

	2014		2013
PPL Energy Supply	$	105	$	44
PPL Electric		(25)		(19)
LKE		136		(28)
LG&E		74		(8)
KU		60		(27)

Schedule of Utility Inventory

"Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31.

		PPL				PPL Energy Supply				LKE				LG&E				KU
		2014		2013		2014		2013		2014		2013		2014		2013		2014		2013
Fuel		$	408	$	305	$	243	$	163	$	166	$	141	$	66	$	64	$	100	$	77
Natural gas stored underground (a)			62		49		7		2		54		48		54		48
Materials and supplies			366		348		205		193		91		89		42		42		49		47
	Total	$	836	$	702	$	455	$	358	$	311	$	278	$	162	$	154	$	149	$	124

(a)The majority of LKE's and LG&E's natural gas stored underground is held to serve retail customers.

PPL Electric Utilities Corp [Member]

Summary Of Significant Accounting Policies [Line Items]

Schedule of Restricted Cash and Cash Equivalents

At December 31, the balances of restricted cash and cash equivalents included the following.

		PPL				PPL Energy Supply				PPL Electric
		2014		2013		2014		2013		2014		2013
Margin deposits posted to
	counterparties	$	175	$	67	$	175	$	67
Low carbon network fund (a)			19		27
Funds deposited with a trustee					12							$	12
Ironwood debt service reserves			17		17		17		17
Other			13		11		1		1	$	3
		$	224	$	134	$	193	$	85	$	3	$	12

(a)Funds received by WPD, which are to be spent on approved initiatives to support a low carbon environment.

Intercompany tax receivables (payables)

At December 31, the following intercompany tax receivables (payables) were recorded.

	2014		2013
PPL Energy Supply	$	105	$	44
PPL Electric		(25)		(19)
LKE		136		(28)
LG&E		74		(8)
KU		60		(27)

LG And E And KU Energy LLC [Member]

Summary Of Significant Accounting Policies [Line Items]

Intercompany tax receivables (payables)

At December 31, the following intercompany tax receivables (payables) were recorded.

	2014		2013
PPL Energy Supply	$	105	$	44
PPL Electric		(25)		(19)
LKE		136		(28)
LG&E		74		(8)
KU		60		(27)

Schedule of Utility Inventory

"Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31.

		PPL				PPL Energy Supply				LKE				LG&E				KU
		2014		2013		2014		2013		2014		2013		2014		2013		2014		2013
Fuel		$	408	$	305	$	243	$	163	$	166	$	141	$	66	$	64	$	100	$	77
Natural gas stored underground (a)			62		49		7		2		54		48		54		48
Materials and supplies			366		348		205		193		91		89		42		42		49		47
	Total	$	836	$	702	$	455	$	358	$	311	$	278	$	162	$	154	$	149	$	124

(a)The majority of LKE's and LG&E's natural gas stored underground is held to serve retail customers.

Louisville Gas And Electric Co [Member]

Summary Of Significant Accounting Policies [Line Items]

Intercompany tax receivables (payables)

At December 31, the following intercompany tax receivables (payables) were recorded.

	2014		2013
PPL Energy Supply	$	105	$	44
PPL Electric		(25)		(19)
LKE		136		(28)
LG&E		74		(8)
KU		60		(27)

Schedule of Utility Inventory

"Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31.

		PPL				PPL Energy Supply				LKE				LG&E				KU
		2014		2013		2014		2013		2014		2013		2014		2013		2014		2013
Fuel		$	408	$	305	$	243	$	163	$	166	$	141	$	66	$	64	$	100	$	77
Natural gas stored underground (a)			62		49		7		2		54		48		54		48
Materials and supplies			366		348		205		193		91		89		42		42		49		47
	Total	$	836	$	702	$	455	$	358	$	311	$	278	$	162	$	154	$	149	$	124

(a)The majority of LKE's and LG&E's natural gas stored underground is held to serve retail customers.

Kentucky Utilities Co [Member]

Summary Of Significant Accounting Policies [Line Items]

Intercompany tax receivables (payables)

At December 31, the following intercompany tax receivables (payables) were recorded.

	2014		2013
PPL Energy Supply	$	105	$	44
PPL Electric		(25)		(19)
LKE		136		(28)
LG&E		74		(8)
KU		60		(27)

Schedule of Utility Inventory

"Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31.

		PPL				PPL Energy Supply				LKE				LG&E				KU
		2014		2013		2014		2013		2014		2013		2014		2013		2014		2013
Fuel		$	408	$	305	$	243	$	163	$	166	$	141	$	66	$	64	$	100	$	77
Natural gas stored underground (a)			62		49		7		2		54		48		54		48
Materials and supplies			366		348		205		193		91		89		42		42		49		47
	Total	$	836	$	702	$	455	$	358	$	311	$	278	$	162	$	154	$	149	$	124

(a)The majority of LKE's and LG&E's natural gas stored underground is held to serve retail customers.