Utility Rate Regulation (Tables)

9 Months Ended

Sep. 30, 2014

Utility Rate Regulation [Line Items]

Regulatory Assets

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

		PPL				PPL Electric
		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7
	Gas supply clause		20		10
	Fuel adjustment clause				2
	Demand side management				8
	Other		5		6	$	3	$	6
Total current regulatory assets		$	28	$	33	$	3	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	486	$	509	$	250	$	257
	Taxes recoverable through future rates		313		306		313		306
	Storm costs		130		147		47		53
	Unamortized loss on debt		79		85		51		57
	Interest rate swaps		54		44
	Accumulated cost of removal of utility plant		111		98		111		98
	AROs		72		44
	Other		8		13				1
Total noncurrent regulatory assets		$	1,253	$	1,246	$	772	$	772

		LKE				LG&E				KU
		September 30,		December 31,		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7	$	3	$	2			$	5
	Gas supply clause		20		10		20		10
	Fuel adjustment clause				2				2
	Demand side management				8				3				5
	Other		2							$	2
Total current regulatory assets		$	25	$	27	$	23	$	17	$	2	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	236	$	252	$	159	$	164	$	77	$	88
	Storm costs		83		94		45		51		38		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		54		44		52		44		2
	AROs		72		44		27		21		45		23
	Other		8		12		4		5		4		7
Total noncurrent regulatory assets		$	481	$	474	$	305	$	303	$	176	$	171

Regulatory Liabilities

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

Current Regulatory Liabilities:
	Generation supply charge	$	33	$	23	$	33	$	23
	Gas supply clause		4		3
	Transmission service charge		2		8		2		8
	Fuel adjustment clause		1		4
	Transmission formula rate		42		20		42		20
	Universal service rider				10				10
	Storm damage expense		1		14		1		14
	Gas line tracker		5		6
	Other		4		2		3		1
Total current regulatory liabilities		$	92	$	90	$	81	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	697	$	688
	Coal contracts (a)		69		98
	Power purchase agreement - OVEC (a)		94		100
	Net deferred tax assets		27		30
	Act 129 compliance rider		18		15	$	18	$	15
	Defined benefit plans		29		26
	Interest rate swaps		90		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,028	$	1,048	$	18	$	15

Current Regulatory Liabilities:
		Gas supply clause	$	4	$	3	$	4	$	3
		Fuel adjustment clause		1		4					$	1	$	4
		Gas line tracker		5		6		5		6
		Other		1		1						1		1
Total current regulatory liabilities			$	11	$	14	$	9	$	9	$	2	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	697	$	688	$	305	$	299	$	392	$	389
	Coal contracts (a)			69		98		30		43		39		55
	Power purchase agreement - OVEC (a)			94		100		65		69		29		31
	Net deferred tax assets			27		30		24		26		3		4
	Defined benefit plans			29		26						29		26
	Interest rate swaps			90		86		45		43		45		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,010	$	1,033	$	471	$	482	$	539	$	551

(a)These liabilities were recorded as offsets to certain intangible assets that were recorded at fair value upon the acquisition of LKE by PPL.

PPL Electric Utilities Corp [Member]

Utility Rate Regulation [Line Items]

Regulatory Assets

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

		PPL				PPL Electric
		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7
	Gas supply clause		20		10
	Fuel adjustment clause				2
	Demand side management				8
	Other		5		6	$	3	$	6
Total current regulatory assets		$	28	$	33	$	3	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	486	$	509	$	250	$	257
	Taxes recoverable through future rates		313		306		313		306
	Storm costs		130		147		47		53
	Unamortized loss on debt		79		85		51		57
	Interest rate swaps		54		44
	Accumulated cost of removal of utility plant		111		98		111		98
	AROs		72		44
	Other		8		13				1
Total noncurrent regulatory assets		$	1,253	$	1,246	$	772	$	772

		LKE				LG&E				KU
		September 30,		December 31,		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7	$	3	$	2			$	5
	Gas supply clause		20		10		20		10
	Fuel adjustment clause				2				2
	Demand side management				8				3				5
	Other		2							$	2
Total current regulatory assets		$	25	$	27	$	23	$	17	$	2	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	236	$	252	$	159	$	164	$	77	$	88
	Storm costs		83		94		45		51		38		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		54		44		52		44		2
	AROs		72		44		27		21		45		23
	Other		8		12		4		5		4		7
Total noncurrent regulatory assets		$	481	$	474	$	305	$	303	$	176	$	171

Regulatory Liabilities

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

Current Regulatory Liabilities:
	Generation supply charge	$	33	$	23	$	33	$	23
	Gas supply clause		4		3
	Transmission service charge		2		8		2		8
	Fuel adjustment clause		1		4
	Transmission formula rate		42		20		42		20
	Universal service rider				10				10
	Storm damage expense		1		14		1		14
	Gas line tracker		5		6
	Other		4		2		3		1
Total current regulatory liabilities		$	92	$	90	$	81	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	697	$	688
	Coal contracts (a)		69		98
	Power purchase agreement - OVEC (a)		94		100
	Net deferred tax assets		27		30
	Act 129 compliance rider		18		15	$	18	$	15
	Defined benefit plans		29		26
	Interest rate swaps		90		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,028	$	1,048	$	18	$	15

Current Regulatory Liabilities:
		Gas supply clause	$	4	$	3	$	4	$	3
		Fuel adjustment clause		1		4					$	1	$	4
		Gas line tracker		5		6		5		6
		Other		1		1						1		1
Total current regulatory liabilities			$	11	$	14	$	9	$	9	$	2	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	697	$	688	$	305	$	299	$	392	$	389
	Coal contracts (a)			69		98		30		43		39		55
	Power purchase agreement - OVEC (a)			94		100		65		69		29		31
	Net deferred tax assets			27		30		24		26		3		4
	Defined benefit plans			29		26						29		26
	Interest rate swaps			90		86		45		43		45		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,010	$	1,033	$	471	$	482	$	539	$	551

LG And E And KU Energy LLC [Member]

Utility Rate Regulation [Line Items]

Regulatory Assets

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

		PPL				PPL Electric
		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7
	Gas supply clause		20		10
	Fuel adjustment clause				2
	Demand side management				8
	Other		5		6	$	3	$	6
Total current regulatory assets		$	28	$	33	$	3	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	486	$	509	$	250	$	257
	Taxes recoverable through future rates		313		306		313		306
	Storm costs		130		147		47		53
	Unamortized loss on debt		79		85		51		57
	Interest rate swaps		54		44
	Accumulated cost of removal of utility plant		111		98		111		98
	AROs		72		44
	Other		8		13				1
Total noncurrent regulatory assets		$	1,253	$	1,246	$	772	$	772

		LKE				LG&E				KU
		September 30,		December 31,		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7	$	3	$	2			$	5
	Gas supply clause		20		10		20		10
	Fuel adjustment clause				2				2
	Demand side management				8				3				5
	Other		2							$	2
Total current regulatory assets		$	25	$	27	$	23	$	17	$	2	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	236	$	252	$	159	$	164	$	77	$	88
	Storm costs		83		94		45		51		38		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		54		44		52		44		2
	AROs		72		44		27		21		45		23
	Other		8		12		4		5		4		7
Total noncurrent regulatory assets		$	481	$	474	$	305	$	303	$	176	$	171

Regulatory Liabilities

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

Current Regulatory Liabilities:
	Generation supply charge	$	33	$	23	$	33	$	23
	Gas supply clause		4		3
	Transmission service charge		2		8		2		8
	Fuel adjustment clause		1		4
	Transmission formula rate		42		20		42		20
	Universal service rider				10				10
	Storm damage expense		1		14		1		14
	Gas line tracker		5		6
	Other		4		2		3		1
Total current regulatory liabilities		$	92	$	90	$	81	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	697	$	688
	Coal contracts (a)		69		98
	Power purchase agreement - OVEC (a)		94		100
	Net deferred tax assets		27		30
	Act 129 compliance rider		18		15	$	18	$	15
	Defined benefit plans		29		26
	Interest rate swaps		90		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,028	$	1,048	$	18	$	15

Current Regulatory Liabilities:
		Gas supply clause	$	4	$	3	$	4	$	3
		Fuel adjustment clause		1		4					$	1	$	4
		Gas line tracker		5		6		5		6
		Other		1		1						1		1
Total current regulatory liabilities			$	11	$	14	$	9	$	9	$	2	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	697	$	688	$	305	$	299	$	392	$	389
	Coal contracts (a)			69		98		30		43		39		55
	Power purchase agreement - OVEC (a)			94		100		65		69		29		31
	Net deferred tax assets			27		30		24		26		3		4
	Defined benefit plans			29		26						29		26
	Interest rate swaps			90		86		45		43		45		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,010	$	1,033	$	471	$	482	$	539	$	551

(a)These liabilities were recorded as offsets to certain intangible assets that were recorded at fair value upon the acquisition of LKE by PPL.

Louisville Gas And Electric Co [Member]

Utility Rate Regulation [Line Items]

Regulatory Assets

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

		PPL				PPL Electric
		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7
	Gas supply clause		20		10
	Fuel adjustment clause				2
	Demand side management				8
	Other		5		6	$	3	$	6
Total current regulatory assets		$	28	$	33	$	3	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	486	$	509	$	250	$	257
	Taxes recoverable through future rates		313		306		313		306
	Storm costs		130		147		47		53
	Unamortized loss on debt		79		85		51		57
	Interest rate swaps		54		44
	Accumulated cost of removal of utility plant		111		98		111		98
	AROs		72		44
	Other		8		13				1
Total noncurrent regulatory assets		$	1,253	$	1,246	$	772	$	772

		LKE				LG&E				KU
		September 30,		December 31,		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7	$	3	$	2			$	5
	Gas supply clause		20		10		20		10
	Fuel adjustment clause				2				2
	Demand side management				8				3				5
	Other		2							$	2
Total current regulatory assets		$	25	$	27	$	23	$	17	$	2	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	236	$	252	$	159	$	164	$	77	$	88
	Storm costs		83		94		45		51		38		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		54		44		52		44		2
	AROs		72		44		27		21		45		23
	Other		8		12		4		5		4		7
Total noncurrent regulatory assets		$	481	$	474	$	305	$	303	$	176	$	171

Regulatory Liabilities

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

Current Regulatory Liabilities:
	Generation supply charge	$	33	$	23	$	33	$	23
	Gas supply clause		4		3
	Transmission service charge		2		8		2		8
	Fuel adjustment clause		1		4
	Transmission formula rate		42		20		42		20
	Universal service rider				10				10
	Storm damage expense		1		14		1		14
	Gas line tracker		5		6
	Other		4		2		3		1
Total current regulatory liabilities		$	92	$	90	$	81	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	697	$	688
	Coal contracts (a)		69		98
	Power purchase agreement - OVEC (a)		94		100
	Net deferred tax assets		27		30
	Act 129 compliance rider		18		15	$	18	$	15
	Defined benefit plans		29		26
	Interest rate swaps		90		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,028	$	1,048	$	18	$	15

Current Regulatory Liabilities:
		Gas supply clause	$	4	$	3	$	4	$	3
		Fuel adjustment clause		1		4					$	1	$	4
		Gas line tracker		5		6		5		6
		Other		1		1						1		1
Total current regulatory liabilities			$	11	$	14	$	9	$	9	$	2	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	697	$	688	$	305	$	299	$	392	$	389
	Coal contracts (a)			69		98		30		43		39		55
	Power purchase agreement - OVEC (a)			94		100		65		69		29		31
	Net deferred tax assets			27		30		24		26		3		4
	Defined benefit plans			29		26						29		26
	Interest rate swaps			90		86		45		43		45		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,010	$	1,033	$	471	$	482	$	539	$	551

(a)These liabilities were recorded as offsets to certain intangible assets that were recorded at fair value upon the acquisition of LKE by PPL.

Kentucky Utilities Co [Member]

Utility Rate Regulation [Line Items]

Regulatory Assets

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

		PPL				PPL Electric
		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7
	Gas supply clause		20		10
	Fuel adjustment clause				2
	Demand side management				8
	Other		5		6	$	3	$	6
Total current regulatory assets		$	28	$	33	$	3	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	486	$	509	$	250	$	257
	Taxes recoverable through future rates		313		306		313		306
	Storm costs		130		147		47		53
	Unamortized loss on debt		79		85		51		57
	Interest rate swaps		54		44
	Accumulated cost of removal of utility plant		111		98		111		98
	AROs		72		44
	Other		8		13				1
Total noncurrent regulatory assets		$	1,253	$	1,246	$	772	$	772

		LKE				LG&E				KU
		September 30,		December 31,		September 30,		December 31,		September 30,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery	$	3	$	7	$	3	$	2			$	5
	Gas supply clause		20		10		20		10
	Fuel adjustment clause				2				2
	Demand side management				8				3				5
	Other		2							$	2
Total current regulatory assets		$	25	$	27	$	23	$	17	$	2	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	236	$	252	$	159	$	164	$	77	$	88
	Storm costs		83		94		45		51		38		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		54		44		52		44		2
	AROs		72		44		27		21		45		23
	Other		8		12		4		5		4		7
Total noncurrent regulatory assets		$	481	$	474	$	305	$	303	$	176	$	171

Regulatory Liabilities

The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.

Current Regulatory Liabilities:
	Generation supply charge	$	33	$	23	$	33	$	23
	Gas supply clause		4		3
	Transmission service charge		2		8		2		8
	Fuel adjustment clause		1		4
	Transmission formula rate		42		20		42		20
	Universal service rider				10				10
	Storm damage expense		1		14		1		14
	Gas line tracker		5		6
	Other		4		2		3		1
Total current regulatory liabilities		$	92	$	90	$	81	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	697	$	688
	Coal contracts (a)		69		98
	Power purchase agreement - OVEC (a)		94		100
	Net deferred tax assets		27		30
	Act 129 compliance rider		18		15	$	18	$	15
	Defined benefit plans		29		26
	Interest rate swaps		90		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,028	$	1,048	$	18	$	15

Current Regulatory Liabilities:
		Gas supply clause	$	4	$	3	$	4	$	3
		Fuel adjustment clause		1		4					$	1	$	4
		Gas line tracker		5		6		5		6
		Other		1		1						1		1
Total current regulatory liabilities			$	11	$	14	$	9	$	9	$	2	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	697	$	688	$	305	$	299	$	392	$	389
	Coal contracts (a)			69		98		30		43		39		55
	Power purchase agreement - OVEC (a)			94		100		65		69		29		31
	Net deferred tax assets			27		30		24		26		3		4
	Defined benefit plans			29		26						29		26
	Interest rate swaps			90		86		45		43		45		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,010	$	1,033	$	471	$	482	$	539	$	551

(a)These liabilities were recorded as offsets to certain intangible assets that were recorded at fair value upon the acquisition of LKE by PPL.