Utility Rate Regulation (Tables)

6 Months Ended

Jun. 30, 2013

Utility Rate Regulation [Line Items]

Regulatory Assets and Liabilities

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

		PPL				PPL Electric
		June 30,		December 31,		June 30,		December 31,
		2013		2012		2013		2012
Current Regulatory Assets:
	Transmission formula rate	$	5			$	5
	ECR		7
	Gas supply clause		14	$	11
	Fuel adjustment clause		3		6
	Other		5		2
Total current regulatory assets		$	34	$	19	$	5
Noncurrent Regulatory Assets:
	Defined benefit plans	$	700	$	730	$	351	$	362
	Taxes recoverable through future rates		298		293		298		293
	Storm costs		157		168		56		59
	Unamortized loss on debt		90		96		60		65
	Interest rate swaps		51		67
	Accumulated cost of removal of utility plant		92		71		92		71
	AROs		34		26
	Other		21		32		5		3
Total noncurrent regulatory assets		$	1,443	$	1,483	$	862	$	853

Current Regulatory Liabilities:
	Generation supply charge	$	24	$	27	$	24	$	27
	ECR				4
	Gas supply clause				4
	Transmission service charge		11		6		11		6
	Universal service rider		11		17		11		17
	Other		8		3		2		2
Total current regulatory liabilities		$	54	$	61	$	48	$	52
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	689	$	679
	Coal contracts (a)		119		141
	Power purchase agreement - OVEC (a)		104		108
	Net deferred tax assets		32		34
	Act 129 compliance rider		13		8	$	13	$	8
	Defined benefit plans		18		17
	Interest rate swaps		72		14
	Other		5		9
Total noncurrent regulatory liabilities		$	1,052	$	1,010	$	13	$	8

(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 and Liabilities

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

		PPL				PPL Electric
		June 30,		December 31,		June 30,		December 31,
		2013		2012		2013		2012
Current Regulatory Assets:
	Transmission formula rate	$	5			$	5
	ECR		7
	Gas supply clause		14	$	11
	Fuel adjustment clause		3		6
	Other		5		2
Total current regulatory assets		$	34	$	19	$	5
Noncurrent Regulatory Assets:
	Defined benefit plans	$	700	$	730	$	351	$	362
	Taxes recoverable through future rates		298		293		298		293
	Storm costs		157		168		56		59
	Unamortized loss on debt		90		96		60		65
	Interest rate swaps		51		67
	Accumulated cost of removal of utility plant		92		71		92		71
	AROs		34		26
	Other		21		32		5		3
Total noncurrent regulatory assets		$	1,443	$	1,483	$	862	$	853

Current Regulatory Liabilities:
	Generation supply charge	$	24	$	27	$	24	$	27
	ECR				4
	Gas supply clause				4
	Transmission service charge		11		6		11		6
	Universal service rider		11		17		11		17
	Other		8		3		2		2
Total current regulatory liabilities		$	54	$	61	$	48	$	52
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal of utility plant	$	689	$	679
	Coal contracts (a)		119		141
	Power purchase agreement - OVEC (a)		104		108
	Net deferred tax assets		32		34
	Act 129 compliance rider		13		8	$	13	$	8
	Defined benefit plans		18		17
	Interest rate swaps		72		14
	Other		5		9
Total noncurrent regulatory liabilities		$	1,052	$	1,010	$	13	$	8

LG And E And KU Energy LLC [Member]

Utility Rate Regulation [Line Items]

Regulatory Assets and Liabilities

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

		LKE				LG&E				KU
		June 30,		December 31,		June 30,		December 31,		June 30,		December 31,
		2013		2012		2013		2012		2013		2012
Current Regulatory Assets:
	ECR	$	7			$	2			$	5
	Gas supply clause		14	$	11		14	$	11
	Fuel adjustment clause		3		6		3		6
	Other		5		2		2		2		3
Total current regulatory assets		$	29	$	19	$	21	$	19	$	8
Noncurrent Regulatory Assets:
	Defined benefit plans	$	349	$	368	$	219	$	232	$	130	$	136
	Storm costs		101		109		55		59		46		50
	Unamortized loss on debt		30		31		19		20		11		11
	Interest rate swaps		51		67		51		67
	AROs		34		26		19		15		15		11
	Other		16		29		6		7		10		22
Total noncurrent regulatory assets		$	581	$	630	$	369	$	400	$	212	$	230

Current Regulatory Liabilities:
		ECR			$	4							$	4
		Gas supply clause				4			$	4
		Gas line tracker	$	4			$	4
		Other		2		1		1			$	1		1
Total current regulatory liabilities			$	6	$	9	$	5	$	4	$	1	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	689	$	679	$	300	$	297	$	389	$	382
	Coal contracts (a)			119		141		52		61		67		80
	Power purchase agreement - OVEC (a)			104		108		72		75		32		33
	Net deferred tax assets			32		34		26		28		6		6
	Defined benefit plans			18		17						18		17
	Interest rate swaps			72		14		36		7		36		7
	Other			5		9		2		3		3		6
Total noncurrent regulatory liabilities			$	1,039	$	1,002	$	488	$	471	$	551	$	531

(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 and Liabilities

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

		LKE				LG&E				KU
		June 30,		December 31,		June 30,		December 31,		June 30,		December 31,
		2013		2012		2013		2012		2013		2012
Current Regulatory Assets:
	ECR	$	7			$	2			$	5
	Gas supply clause		14	$	11		14	$	11
	Fuel adjustment clause		3		6		3		6
	Other		5		2		2		2		3
Total current regulatory assets		$	29	$	19	$	21	$	19	$	8
Noncurrent Regulatory Assets:
	Defined benefit plans	$	349	$	368	$	219	$	232	$	130	$	136
	Storm costs		101		109		55		59		46		50
	Unamortized loss on debt		30		31		19		20		11		11
	Interest rate swaps		51		67		51		67
	AROs		34		26		19		15		15		11
	Other		16		29		6		7		10		22
Total noncurrent regulatory assets		$	581	$	630	$	369	$	400	$	212	$	230

Current Regulatory Liabilities:
		ECR			$	4							$	4
		Gas supply clause				4			$	4
		Gas line tracker	$	4			$	4
		Other		2		1		1			$	1		1
Total current regulatory liabilities			$	6	$	9	$	5	$	4	$	1	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	689	$	679	$	300	$	297	$	389	$	382
	Coal contracts (a)			119		141		52		61		67		80
	Power purchase agreement - OVEC (a)			104		108		72		75		32		33
	Net deferred tax assets			32		34		26		28		6		6
	Defined benefit plans			18		17						18		17
	Interest rate swaps			72		14		36		7		36		7
	Other			5		9		2		3		3		6
Total noncurrent regulatory liabilities			$	1,039	$	1,002	$	488	$	471	$	551	$	531

(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 and Liabilities

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

		LKE				LG&E				KU
		June 30,		December 31,		June 30,		December 31,		June 30,		December 31,
		2013		2012		2013		2012		2013		2012
Current Regulatory Assets:
	ECR	$	7			$	2			$	5
	Gas supply clause		14	$	11		14	$	11
	Fuel adjustment clause		3		6		3		6
	Other		5		2		2		2		3
Total current regulatory assets		$	29	$	19	$	21	$	19	$	8
Noncurrent Regulatory Assets:
	Defined benefit plans	$	349	$	368	$	219	$	232	$	130	$	136
	Storm costs		101		109		55		59		46		50
	Unamortized loss on debt		30		31		19		20		11		11
	Interest rate swaps		51		67		51		67
	AROs		34		26		19		15		15		11
	Other		16		29		6		7		10		22
Total noncurrent regulatory assets		$	581	$	630	$	369	$	400	$	212	$	230

Current Regulatory Liabilities:
		ECR			$	4							$	4
		Gas supply clause				4			$	4
		Gas line tracker	$	4			$	4
		Other		2		1		1			$	1		1
Total current regulatory liabilities			$	6	$	9	$	5	$	4	$	1	$	5
Noncurrent Regulatory Liabilities:
	Accumulated cost of removal
		of utility plant	$	689	$	679	$	300	$	297	$	389	$	382
	Coal contracts (a)			119		141		52		61		67		80
	Power purchase agreement - OVEC (a)			104		108		72		75		32		33
	Net deferred tax assets			32		34		26		28		6		6
	Defined benefit plans			18		17						18		17
	Interest rate swaps			72		14		36		7		36		7
	Other			5		9		2		3		3		6
Total noncurrent regulatory liabilities			$	1,039	$	1,002	$	488	$	471	$	551	$	531

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