Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Summary Of Significant Accounting Policies [Line Items]

Schedule of Utility Revenue

For the years ended December 31, the Statements of Income "Operating Revenues" line item contains revenue from the following:

			2015		2014		2013
Domestic electric and gas revenues (a)		$	5,239	$	5,209	$	4,842
U.K. operating revenues (b)			2,410		2,621		2,403
Domestic - other			20		22		18
	Total	$	7,669	$	7,852	$	7,263

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

(b)Primarily represents regulated electricity distribution revenues 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
2015	$	44	$	49	$	(2)		$	50	$	41
2014		43		49					48		44
2013		41		38		4	(b)		40		43
PPL Electric
2015	$	17	$	39				$	40	$	16
2014		18		34					35		17
2013		18		32					32		18

LKE
2015	$	25	$	9	$	(2)		$	9	$	23
2014		22		14					11		25
2013		19		4		4	(b)		5		22
LG&E
2015	$	2	$	2				$	3	$	1
2014		2		5	$	(1)	(b)		4		2
2013		1		2		1	(b)		2		2
KU
2015	$	2	$	5				$	5	$	2
2014		4		8	$	(3)	(b)		7		2
2013		2		3		3	(b)		4		4

(a)Primarily related to uncollectible accounts written off.

(b)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 Electric
	2015		2014		2015		2014
Low carbon network fund (a)	$	22	$	19
Other		11		12	$	2	$	3
	$	33	$	31	$	2	$	3

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

Capitalized Interest Costs

Capitalized interest, including the debt component of AFUDC for PPL, was as follows.

	PPL
2015	$	11
2014		16
2013		15

Weighted-average Rates of Depreciation

The following percentages are the weighted-average annual rates of depreciation at December 31.

	2015
	PPL		PPL Electric		LKE		LG&E		KU
Regulated utility plant		2.57		2.46		3.69		3.65		3.71
	2014
	PPL		PPL Electric		LKE		LG&E		KU
Regulated utility plant		2.92		2.46		3.80		4.05		3.63

Schedule of Utility Inventory

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

		PPL				LKE				LG&E				KU
		2015		2014		2015		2014		2015		2014		2015		2014
Fuel		$	168	$	166	$	168	$	166	$	71	$	66	$	97	$	100
Natural gas stored underground (a)			42		54		42		54		42		54
Materials and supplies			147		161		88		91		38		42		50		49
	Total	$	357	$	381	$	298	$	311	$	151	$	162	$	147	$	149

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

Balance Sheet Classification of Deferred Taxes

The following table presents the amounts reclassified from current deferred tax assets and liabilities to noncurrent deferred tax liabilities on the balance sheets as of December 31, 2014.

	Assets		Liabilities
PPL	$	125
PPL Electric		58
LKE		16
KU		2
Discontinued Operations		8	$	4

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 Electric
	2015		2014		2015		2014
Low carbon network fund (a)	$	22	$	19
Other		11		12	$	2	$	3
	$	33	$	31	$	2	$	3

(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.

	2015		2014
PPL Electric	$	56	$	(25)
LKE		(10)		136
LG&E		4		74
KU		(5)		60

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.

	2015		2014
PPL Electric	$	56	$	(25)
LKE		(10)		136
LG&E		4		74
KU		(5)		60

Schedule of Utility Inventory

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

		PPL				LKE				LG&E				KU
		2015		2014		2015		2014		2015		2014		2015		2014
Fuel		$	168	$	166	$	168	$	166	$	71	$	66	$	97	$	100
Natural gas stored underground (a)			42		54		42		54		42		54
Materials and supplies			147		161		88		91		38		42		50		49
	Total	$	357	$	381	$	298	$	311	$	151	$	162	$	147	$	149

(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.

	2015		2014
PPL Electric	$	56	$	(25)
LKE		(10)		136
LG&E		4		74
KU		(5)		60

Schedule of Utility Inventory

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

		PPL				LKE				LG&E				KU
		2015		2014		2015		2014		2015		2014		2015		2014
Fuel		$	168	$	166	$	168	$	166	$	71	$	66	$	97	$	100
Natural gas stored underground (a)			42		54		42		54		42		54
Materials and supplies			147		161		88		91		38		42		50		49
	Total	$	357	$	381	$	298	$	311	$	151	$	162	$	147	$	149

(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.

	2015		2014
PPL Electric	$	56	$	(25)
LKE		(10)		136
LG&E		4		74
KU		(5)		60

Schedule of Utility Inventory

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

		PPL				LKE				LG&E				KU
		2015		2014		2015		2014		2015		2014		2015		2014
Fuel		$	168	$	166	$	168	$	166	$	71	$	66	$	97	$	100
Natural gas stored underground (a)			42		54		42		54		42		54
Materials and supplies			147		161		88		91		38		42		50		49
	Total	$	357	$	381	$	298	$	311	$	151	$	162	$	147	$	149

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