CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 946		$ 1,202
Short-term investments			16
Restricted cash and cash equivalents	88		152
Accounts receivable (less reserve:)
Customer	763		736
Other	51		91
Unbilled revenues	711		830
Fuel, materials and supplies	663		654
Prepayments	167		160
Price risk management assets	1,768		2,548
Regulatory assets	21		9
Other current assets	49		28
Total Current Assets	5,227		6,426
Investments
Nuclear plant decommissioning trust funds	711		640
Other investments	67		78
Total Investments	778		718
Property, Plant and Equipment
Regulated utility plant	24,415		22,994
Less: accumulated depreciation - regulated utility plant	4,011		3,534
Regulated utility plant, net	20,404		19,460
Non-regulated property, plant and equipment
Generation	11,190		10,514
Nuclear fuel	524		457
Other	698		637
Less: accumulated depreciation - non-regulated property, plant and equipment	5,875		5,676
Non-regulated property, plant and equipment, net	6,537		5,932
Construction work in progress	2,106		1,874
Property, Plant and Equipment, net	29,047	[1]	27,266	[1]
Other Noncurrent Assets
Regulatory assets	1,323		1,349
Goodwill	4,130		4,114
Other intangibles	913	[1]	1,065	[1]
Price risk management assets	860		920
Other noncurrent assets	962		790
Total Other Noncurrent Assets	8,188		8,238
Total Assets	43,240		42,648
Current Liabilities
Short-term debt	526		578
Long-term debt due within one year	313
Accounts payable	1,071		1,214
Taxes	95		65
Interest	335		287
Dividends	210		207
Price risk management liabilities	1,184		1,570
Regulatory liabilities	65		73
Other current liabilities	1,088		1,261
Total Current Liabilities	4,887		5,255
Long-term Debt	18,711		17,993
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	3,705		3,326
Investment tax credits	315		285
Price risk management liabilities	884		840
Accrued pension obligations	1,086		1,313
Asset retirement obligations	500		484
Regulatory liabilities	999		1,010
Other deferred credits and noncurrent liabilities	921		1,046
Total Deferred Credits and Other Noncurrent Liabilities	8,410		8,304
Commitments and Contingent Liabilities
Equity
Common stock	6	[2]	6	[2]
Additional paid-in capital	6,912		6,813
Earnings reinvested	5,335		4,797
Accumulated other comprehensive loss	(1,039)		(788)
Total Stockholders' Equity	11,214		10,828
Noncontrolling Interests	18		268
Total Equity	11,232		11,096
Total Liabilities and Equity	43,240		42,648
PPL Energy Supply LLC [Member]
Current Assets
Cash and cash equivalents	432		379
Restricted cash and cash equivalents	80		145
Accounts receivable (less reserve:)
Customer	190		169
Other	25		31
Unbilled revenues	324		402
Accounts receivable from affiliates	101		89
Notes receivable from affiliates			198
Fuel, materials and supplies	318		298
Prepayments	20		14
Price risk management assets	1,767		2,527
Other current assets	6		11
Total Current Assets	3,263		4,263
Investments
Nuclear plant decommissioning trust funds	711		640
Other investments	43		40
Total Investments	754		680
Non-regulated property, plant and equipment
Generation	11,199		10,517
Nuclear fuel	524		457
Other	260		245
Less: accumulated depreciation - non-regulated property, plant and equipment	5,750		5,573
Non-regulated property, plant and equipment, net	6,233		5,646
Construction work in progress	935		840
Property, Plant and Equipment, net	7,168	[1]	6,486	[1]
Other Noncurrent Assets
Goodwill	86		86
Other intangibles	249	[1]	386	[1]
Price risk management assets	837		896
Other noncurrent assets	379		382
Total Other Noncurrent Assets	1,551		1,750
Total Assets	12,736		13,179
Current Liabilities
Short-term debt	355		400
Long-term debt due within one year	313
Accounts payable	384		472
Accounts payable to affiliates	1		14
Taxes	62		90
Interest	55		30
Price risk management liabilities	1,141		1,560
Counterparty collateral	160		148
Deferred income taxes	190		315
Other current liabilities	209		196
Total Current Liabilities	2,870		3,225
Long-term Debt	2,962		3,024
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,301		1,223
Investment tax credits	171		136
Price risk management liabilities	806		785
Accrued pension obligations	161		214
Asset retirement obligations	360		349
Other deferred credits and noncurrent liabilities	204		186
Total Deferred Credits and Other Noncurrent Liabilities	3,003		2,893
Commitments and Contingent Liabilities
Equity
Member's Equity	3,883		4,019
Noncontrolling Interests	18		18
Total Equity	3,901		4,037
Total Liabilities and Equity	12,736		13,179
PPL Electric Utilities Corp [Member]
Current Assets
Cash and cash equivalents	31		320
Accounts receivable (less reserve:)
Customer	259		271
Other	6		9
Unbilled revenues	80		98
Accounts receivable from affiliates	3		35
Notes receivable from affiliates	210
Fuel, materials and supplies	38		42
Prepayments	76		78
Other current assets	30		30
Total Current Assets	733		883
Property, Plant and Equipment
Regulated utility plant	6,104		5,830
Less: accumulated depreciation - regulated utility plant	2,300		2,217
Regulated utility plant, net	3,804		3,613
Non-regulated property, plant and equipment
Other, net	2		2
Construction work in progress	348		242
Property, Plant and Equipment, net	4,154		3,857
Other Noncurrent Assets
Regulatory assets	733		729
Other intangibles	164		155
Other noncurrent assets	82		81
Total Other Noncurrent Assets	979		965
Total Assets	5,866		5,705
Current Liabilities
Accounts payable	173		171
Accounts payable to affiliates	57		64
Customer deposits and prepayments	26		39
Interest	19		24
Regulatory liabilities	52		53
Vacation	23		22
Other current liabilities	50		47
Total Current Liabilities	400		420
Long-term Debt	1,967		1,718
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,187		1,115
Investment tax credits	4		5
Accrued pension obligations	142		186
Regulatory liabilities	12		7
Other deferred credits and noncurrent liabilities	109		129
Total Deferred Credits and Other Noncurrent Liabilities	1,454		1,442
Commitments and Contingent Liabilities
Equity
Preference stock			250
Common stock	364	[3]	364	[3]
Additional paid-in capital	1,129		979
Earnings reinvested	552		532
Total Stockholders' Equity	2,045		2,125
Total Liabilities and Equity	5,866		5,705
LG And E And KU Energy LLC [Member]
Current Assets
Cash and cash equivalents	90		59
Accounts receivable (less reserve:)
Customer	158		129
Other	10		20
Unbilled revenues	120		146
Notes receivable from affiliates	6		15
Fuel, materials and supplies	278		283
Prepayments	21		22
Income taxes receivable			3
Deferred income taxes	148		17
Regulatory assets	21		9
Other current assets	6		3
Total Current Assets	858		706
Investments
Investments	20		31
Property, Plant and Equipment
Regulated utility plant	7,865		7,519
Less: accumulated depreciation - regulated utility plant	458		277
Regulated utility plant, net	7,407		7,242
Non-regulated property, plant and equipment
Other, net	3		2
Construction work in progress	650		557
Property, Plant and Equipment, net	8,060		7,801
Other Noncurrent Assets
Regulatory assets	590		620
Goodwill	996		996
Other intangibles	278		314
Other noncurrent assets	114		108
Total Other Noncurrent Assets	1,978		2,038
Total Assets	10,916		10,576
Current Liabilities
Accounts payable	206		224
Accounts payable to affiliates	2		2
Customer deposits and prepayments	47		45
Taxes	76		25
Interest	51		23
Regulatory liabilities	13		20
Salaries and benefits	67		59
Other current liabilities	47		35
Total Current Liabilities	509		433
Long-term Debt	4,074		4,073
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	645		413
Investment tax credits	140		144
Price risk management liabilities	57		55
Accrued pension obligations	316		359
Asset retirement obligations	118		116
Regulatory liabilities	987		1,003
Other deferred credits and noncurrent liabilities	248		239
Total Deferred Credits and Other Noncurrent Liabilities	2,511		2,329
Commitments and Contingent Liabilities
Equity
Member's Equity	3,822		3,741
Total Liabilities and Equity	10,916		10,576
Louisville Gas And Electric Co [Member]
Current Assets
Cash and cash equivalents	48		25
Accounts receivable (less reserve:)
Customer	68		60
Other	5		9
Unbilled revenues	49		65
Accounts receivable from affiliates	12		11
Fuel, materials and supplies	152		142
Prepayments	6		7
Income taxes receivable			4
Deferred income taxes	2		2
Regulatory assets	17		9
Total Current Assets	359		334
Property, Plant and Equipment
Regulated utility plant	3,142		2,956
Less: accumulated depreciation - regulated utility plant	196		116
Regulated utility plant, net	2,946		2,840
Non-regulated property, plant and equipment
Other, net	1
Construction work in progress	186		215
Property, Plant and Equipment, net	3,133		3,055
Other Noncurrent Assets
Regulatory assets	384		403
Goodwill	389		389
Other intangibles	149		166
Other noncurrent assets	44		40
Total Other Noncurrent Assets	966		998
Total Assets	4,458		4,387
Current Liabilities
Accounts payable	89		94
Accounts payable to affiliates	24		26
Customer deposits and prepayments	23		22
Taxes	34		13
Interest	11		6
Regulatory liabilities	5		10
Salaries and benefits	18		14
Other current liabilities	14		14
Total Current Liabilities	218		199
Long-term Debt	1,112		1,112
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	520		475
Investment tax credits	41		43
Price risk management liabilities	57		55
Accrued pension obligations	71		95
Asset retirement obligations	55		55
Regulatory liabilities	467		478
Other deferred credits and noncurrent liabilities	108		113
Total Deferred Credits and Other Noncurrent Liabilities	1,319		1,314
Commitments and Contingent Liabilities
Equity
Common stock	424	[4]	424	[4]
Additional paid-in capital	1,278		1,278
Earnings reinvested	107		60
Total Stockholders' Equity	1,809		1,762
Total Liabilities and Equity	4,458		4,387
Kentucky Utilities Co [Member]
Current Assets
Cash and cash equivalents	42		31
Accounts receivable (less reserve:)
Customer	90		69
Other	5		9
Unbilled revenues	71		81
Accounts receivable from affiliates	14
Fuel, materials and supplies	126		141
Prepayments	9		7
Income taxes receivable			5
Deferred income taxes	5		5
Regulatory assets	4
Other current assets	6		3
Total Current Assets	372		351
Investments
Investments	19		31
Property, Plant and Equipment
Regulated utility plant	4,723		4,563
Less: accumulated depreciation - regulated utility plant	262		161
Regulated utility plant, net	4,461		4,402
Non-regulated property, plant and equipment
Construction work in progress	463		340
Property, Plant and Equipment, net	4,924		4,742
Other Noncurrent Assets
Regulatory assets	206		217
Goodwill	607		607
Other intangibles	129		148
Other noncurrent assets	60		60
Total Other Noncurrent Assets	1,002		1,032
Total Assets	6,317		6,156
Current Liabilities
Accounts payable	107		112
Accounts payable to affiliates	29		33
Customer deposits and prepayments	24		23
Taxes	37		11
Interest	25		11
Regulatory liabilities	8		10
Salaries and benefits	14		15
Other current liabilities	30		13
Total Current Liabilities	274		228
Long-term Debt	1,842		1,842
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	563		484
Investment tax credits	99		101
Accrued pension obligations	72		83
Asset retirement obligations	63		61
Regulatory liabilities	520		525
Other deferred credits and noncurrent liabilities	93		87
Total Deferred Credits and Other Noncurrent Liabilities	1,410		1,341
Commitments and Contingent Liabilities
Equity
Common stock	308	[5]	308	[5]
Additional paid-in capital	2,348		2,348
Earnings reinvested	139		89
Accumulated other comprehensive loss	(4)
Total Stockholders' Equity	2,791		2,745
Total Liabilities and Equity	$ 6,317		$ 6,156

[1] At September 30, 2012 and December 31, 2011, includes $428 million and $416 million of PP&E, consisting primarily of "Generation," including leasehold improvements, and $10 million and $11 million of "Other intangibles" from the consolidation of a VIE that is the owner/lessor of the Lower Mt. Bethel plant.

[2] 780,000 shares authorized; 580,970 and 578,405 shares issued and outstanding at September 30, 2012 and December 31, 2011.

[3] 170,000 shares authorized; 66,368 shares issued and outstanding at September 30, 2012 and December 31, 2011.

[4] 75,000 shares authorized; 21,294 shares issued and outstanding at September 30, 2012 and December 31, 2011.

[5] 80,000 shares authorized; 37,818 shares issued and outstanding at September 30, 2012 and December 31, 2011.