Utility Rate Regulation (Tables)

3 Months Ended

Mar. 31, 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
		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7
	Gas supply clause	$	19		10
	Fuel adjustment clause		10		2
	Demand side management		1		8
	Other		2		6	$	1	$	6
Total current regulatory assets		$	32	$	33	$	1	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	503	$	509	$	255	$	257
	Taxes recoverable through future rates		307		306		307		306
	Storm costs		141		147		51		53
	Unamortized loss on debt		82		85		54		57
	Interest rate swaps		48		44
	Accumulated cost of removal of utility plant		101		98		101		98
	AROs		51		44
	Other		12		13		2		1
Total noncurrent regulatory assets		$	1,245	$	1,246	$	770	$	772

		LKE				LG&E				KU
		March 31,		December 31,		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7			$	2			$	5
	Gas supply clause	$	19		10	$	19		10
	Fuel adjustment clause		10		2		2		2	$	8
	Demand side management		1		8		1		3				5
	Other		1								1
Total current regulatory assets		$	31	$	27	$	22	$	17	$	9	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	248	$	252	$	161	$	164	$	87	$	88
	Storm costs		90		94		49		51		41		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		48		44		48		44
	AROs		51		44		23		21		28		23
	Other		10		12		4		5		6		7
Total noncurrent regulatory assets		$	475	$	474	$	303	$	303	$	172	$	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	$	25	$	23	$	25	$	23
	Environmental cost recovery		3
	Gas supply clause		2		3
	Transmission service charge		10		8		10		8
	Fuel adjustment clause				4
	Transmission formula rate		27		20		27		20
	Universal service rider		5		10		5		10
	Storm damage expense				14				14
	Gas line tracker		7		6
	Other		1		2		1		1
Total current regulatory liabilities		$	80	$	90	$	68	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	692	$	688
	Coal contracts (a)		88		98
	Power purchase agreement - OVEC (a)		98		100
	Net deferred tax assets		30		30
	Act 129 compliance rider		13		15	$	13	$	15
	Defined benefit plans		26		26
	Interest rate swaps		86		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,037	$	1,048	$	13	$	15

Current Regulatory Liabilities:
		Environmental cost recovery	$	3							$	3
		Gas supply clause		2	$	3	$	2	$	3
		Fuel adjustment clause				4							$	4
		Gas line tracker		7		6		7		6
		Other				1								1
Total current regulatory liabilities			$	12	$	14	$	9	$	9	$	3	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	692	$	688	$	301	$	299	$	391	$	389
	Coal contracts (a)			88		98		38		43		50		55
	Power purchase agreement - OVEC (a)			98		100		68		69		30		31
	Net deferred tax assets			30		30		25		26		5		4
	Defined benefit plans			26		26						26		26
	Interest rate swaps			86		86		43		43		43		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,024	$	1,033	$	477	$	482	$	547	$	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
		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7
	Gas supply clause	$	19		10
	Fuel adjustment clause		10		2
	Demand side management		1		8
	Other		2		6	$	1	$	6
Total current regulatory assets		$	32	$	33	$	1	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	503	$	509	$	255	$	257
	Taxes recoverable through future rates		307		306		307		306
	Storm costs		141		147		51		53
	Unamortized loss on debt		82		85		54		57
	Interest rate swaps		48		44
	Accumulated cost of removal of utility plant		101		98		101		98
	AROs		51		44
	Other		12		13		2		1
Total noncurrent regulatory assets		$	1,245	$	1,246	$	770	$	772

		LKE				LG&E				KU
		March 31,		December 31,		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7			$	2			$	5
	Gas supply clause	$	19		10	$	19		10
	Fuel adjustment clause		10		2		2		2	$	8
	Demand side management		1		8		1		3				5
	Other		1								1
Total current regulatory assets		$	31	$	27	$	22	$	17	$	9	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	248	$	252	$	161	$	164	$	87	$	88
	Storm costs		90		94		49		51		41		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		48		44		48		44
	AROs		51		44		23		21		28		23
	Other		10		12		4		5		6		7
Total noncurrent regulatory assets		$	475	$	474	$	303	$	303	$	172	$	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	$	25	$	23	$	25	$	23
	Environmental cost recovery		3
	Gas supply clause		2		3
	Transmission service charge		10		8		10		8
	Fuel adjustment clause				4
	Transmission formula rate		27		20		27		20
	Universal service rider		5		10		5		10
	Storm damage expense				14				14
	Gas line tracker		7		6
	Other		1		2		1		1
Total current regulatory liabilities		$	80	$	90	$	68	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	692	$	688
	Coal contracts (a)		88		98
	Power purchase agreement - OVEC (a)		98		100
	Net deferred tax assets		30		30
	Act 129 compliance rider		13		15	$	13	$	15
	Defined benefit plans		26		26
	Interest rate swaps		86		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,037	$	1,048	$	13	$	15

Current Regulatory Liabilities:
		Environmental cost recovery	$	3							$	3
		Gas supply clause		2	$	3	$	2	$	3
		Fuel adjustment clause				4							$	4
		Gas line tracker		7		6		7		6
		Other				1								1
Total current regulatory liabilities			$	12	$	14	$	9	$	9	$	3	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	692	$	688	$	301	$	299	$	391	$	389
	Coal contracts (a)			88		98		38		43		50		55
	Power purchase agreement - OVEC (a)			98		100		68		69		30		31
	Net deferred tax assets			30		30		25		26		5		4
	Defined benefit plans			26		26						26		26
	Interest rate swaps			86		86		43		43		43		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,024	$	1,033	$	477	$	482	$	547	$	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
		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7
	Gas supply clause	$	19		10
	Fuel adjustment clause		10		2
	Demand side management		1		8
	Other		2		6	$	1	$	6
Total current regulatory assets		$	32	$	33	$	1	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	503	$	509	$	255	$	257
	Taxes recoverable through future rates		307		306		307		306
	Storm costs		141		147		51		53
	Unamortized loss on debt		82		85		54		57
	Interest rate swaps		48		44
	Accumulated cost of removal of utility plant		101		98		101		98
	AROs		51		44
	Other		12		13		2		1
Total noncurrent regulatory assets		$	1,245	$	1,246	$	770	$	772

		LKE				LG&E				KU
		March 31,		December 31,		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7			$	2			$	5
	Gas supply clause	$	19		10	$	19		10
	Fuel adjustment clause		10		2		2		2	$	8
	Demand side management		1		8		1		3				5
	Other		1								1
Total current regulatory assets		$	31	$	27	$	22	$	17	$	9	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	248	$	252	$	161	$	164	$	87	$	88
	Storm costs		90		94		49		51		41		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		48		44		48		44
	AROs		51		44		23		21		28		23
	Other		10		12		4		5		6		7
Total noncurrent regulatory assets		$	475	$	474	$	303	$	303	$	172	$	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	$	25	$	23	$	25	$	23
	Environmental cost recovery		3
	Gas supply clause		2		3
	Transmission service charge		10		8		10		8
	Fuel adjustment clause				4
	Transmission formula rate		27		20		27		20
	Universal service rider		5		10		5		10
	Storm damage expense				14				14
	Gas line tracker		7		6
	Other		1		2		1		1
Total current regulatory liabilities		$	80	$	90	$	68	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	692	$	688
	Coal contracts (a)		88		98
	Power purchase agreement - OVEC (a)		98		100
	Net deferred tax assets		30		30
	Act 129 compliance rider		13		15	$	13	$	15
	Defined benefit plans		26		26
	Interest rate swaps		86		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,037	$	1,048	$	13	$	15

Current Regulatory Liabilities:
		Environmental cost recovery	$	3							$	3
		Gas supply clause		2	$	3	$	2	$	3
		Fuel adjustment clause				4							$	4
		Gas line tracker		7		6		7		6
		Other				1								1
Total current regulatory liabilities			$	12	$	14	$	9	$	9	$	3	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	692	$	688	$	301	$	299	$	391	$	389
	Coal contracts (a)			88		98		38		43		50		55
	Power purchase agreement - OVEC (a)			98		100		68		69		30		31
	Net deferred tax assets			30		30		25		26		5		4
	Defined benefit plans			26		26						26		26
	Interest rate swaps			86		86		43		43		43		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,024	$	1,033	$	477	$	482	$	547	$	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
		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7
	Gas supply clause	$	19		10
	Fuel adjustment clause		10		2
	Demand side management		1		8
	Other		2		6	$	1	$	6
Total current regulatory assets		$	32	$	33	$	1	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	503	$	509	$	255	$	257
	Taxes recoverable through future rates		307		306		307		306
	Storm costs		141		147		51		53
	Unamortized loss on debt		82		85		54		57
	Interest rate swaps		48		44
	Accumulated cost of removal of utility plant		101		98		101		98
	AROs		51		44
	Other		12		13		2		1
Total noncurrent regulatory assets		$	1,245	$	1,246	$	770	$	772

		LKE				LG&E				KU
		March 31,		December 31,		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7			$	2			$	5
	Gas supply clause	$	19		10	$	19		10
	Fuel adjustment clause		10		2		2		2	$	8
	Demand side management		1		8		1		3				5
	Other		1								1
Total current regulatory assets		$	31	$	27	$	22	$	17	$	9	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	248	$	252	$	161	$	164	$	87	$	88
	Storm costs		90		94		49		51		41		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		48		44		48		44
	AROs		51		44		23		21		28		23
	Other		10		12		4		5		6		7
Total noncurrent regulatory assets		$	475	$	474	$	303	$	303	$	172	$	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	$	25	$	23	$	25	$	23
	Environmental cost recovery		3
	Gas supply clause		2		3
	Transmission service charge		10		8		10		8
	Fuel adjustment clause				4
	Transmission formula rate		27		20		27		20
	Universal service rider		5		10		5		10
	Storm damage expense				14				14
	Gas line tracker		7		6
	Other		1		2		1		1
Total current regulatory liabilities		$	80	$	90	$	68	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	692	$	688
	Coal contracts (a)		88		98
	Power purchase agreement - OVEC (a)		98		100
	Net deferred tax assets		30		30
	Act 129 compliance rider		13		15	$	13	$	15
	Defined benefit plans		26		26
	Interest rate swaps		86		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,037	$	1,048	$	13	$	15

Current Regulatory Liabilities:
		Environmental cost recovery	$	3							$	3
		Gas supply clause		2	$	3	$	2	$	3
		Fuel adjustment clause				4							$	4
		Gas line tracker		7		6		7		6
		Other				1								1
Total current regulatory liabilities			$	12	$	14	$	9	$	9	$	3	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	692	$	688	$	301	$	299	$	391	$	389
	Coal contracts (a)			88		98		38		43		50		55
	Power purchase agreement - OVEC (a)			98		100		68		69		30		31
	Net deferred tax assets			30		30		25		26		5		4
	Defined benefit plans			26		26						26		26
	Interest rate swaps			86		86		43		43		43		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,024	$	1,033	$	477	$	482	$	547	$	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
		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7
	Gas supply clause	$	19		10
	Fuel adjustment clause		10		2
	Demand side management		1		8
	Other		2		6	$	1	$	6
Total current regulatory assets		$	32	$	33	$	1	$	6
Noncurrent Regulatory Assets:
	Defined benefit plans	$	503	$	509	$	255	$	257
	Taxes recoverable through future rates		307		306		307		306
	Storm costs		141		147		51		53
	Unamortized loss on debt		82		85		54		57
	Interest rate swaps		48		44
	Accumulated cost of removal of utility plant		101		98		101		98
	AROs		51		44
	Other		12		13		2		1
Total noncurrent regulatory assets		$	1,245	$	1,246	$	770	$	772

		LKE				LG&E				KU
		March 31,		December 31,		March 31,		December 31,		March 31,		December 31,
		2014		2013		2014		2013		2014		2013
Current Regulatory Assets:
	Environmental cost recovery			$	7			$	2			$	5
	Gas supply clause	$	19		10	$	19		10
	Fuel adjustment clause		10		2		2		2	$	8
	Demand side management		1		8		1		3				5
	Other		1								1
Total current regulatory assets		$	31	$	27	$	22	$	17	$	9	$	10
Noncurrent Regulatory Assets:
	Defined benefit plans	$	248	$	252	$	161	$	164	$	87	$	88
	Storm costs		90		94		49		51		41		43
	Unamortized loss on debt		28		28		18		18		10		10
	Interest rate swaps		48		44		48		44
	AROs		51		44		23		21		28		23
	Other		10		12		4		5		6		7
Total noncurrent regulatory assets		$	475	$	474	$	303	$	303	$	172	$	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	$	25	$	23	$	25	$	23
	Environmental cost recovery		3
	Gas supply clause		2		3
	Transmission service charge		10		8		10		8
	Fuel adjustment clause				4
	Transmission formula rate		27		20		27		20
	Universal service rider		5		10		5		10
	Storm damage expense				14				14
	Gas line tracker		7		6
	Other		1		2		1		1
Total current regulatory liabilities		$	80	$	90	$	68	$	76
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	692	$	688
	Coal contracts (a)		88		98
	Power purchase agreement - OVEC (a)		98		100
	Net deferred tax assets		30		30
	Act 129 compliance rider		13		15	$	13	$	15
	Defined benefit plans		26		26
	Interest rate swaps		86		86
	Other		4		5
Total noncurrent regulatory liabilities		$	1,037	$	1,048	$	13	$	15

Current Regulatory Liabilities:
		Environmental cost recovery	$	3							$	3
		Gas supply clause		2	$	3	$	2	$	3
		Fuel adjustment clause				4							$	4
		Gas line tracker		7		6		7		6
		Other				1								1
Total current regulatory liabilities			$	12	$	14	$	9	$	9	$	3	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	692	$	688	$	301	$	299	$	391	$	389
	Coal contracts (a)			88		98		38		43		50		55
	Power purchase agreement - OVEC (a)			98		100		68		69		30		31
	Net deferred tax assets			30		30		25		26		5		4
	Defined benefit plans			26		26						26		26
	Interest rate swaps			86		86		43		43		43		43
	Other			4		5		2		2		2		3
Total noncurrent regulatory liabilities			$	1,024	$	1,033	$	477	$	482	$	547	$	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.