CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Current Assets
Cash and cash equivalents	$ 1,202		$ 925
Short-term investments	16		163
Restricted cash and cash equivalents	152		28
Accounts receivable (less reserve:)
Customer	742		652
Other	85		90
Unbilled revenues	830		789
Fuel, materials and supplies	654		643
Prepayments	160		435
Price risk management assets	2,548		1,918
Assets held for sale	0		374
Regulatory assets	9		85
Other current assets	28		86
Total Current Assets	6,426		6,188
Investments
Nuclear plant decommissioning trust funds	640		618
Other investments	78		75
Total Investments	718		693
Property, Plant and Equipment
Regulated utility plant	22,994		15,994
Less: accumulated depreciation - regulated utility plant	3,534		3,037
Regulated utility plant, net	19,460		12,957
Non-regulated property, plant and equipment
Generation	10,514		10,165
Nuclear fuel	658		578
Other	637		403
Less: accumulated depreciation - non-regulated property, plant and equipment	5,676		5,440
Non-regulated property, plant and equipment, net	6,133		5,706
Construction work in progress	1,673		2,160
Property, Plant and Equipment, net	27,266	[1]	20,823	[1]
Other Noncurrent Assets
Regulatory assets	1,349		1,180
Goodwill	4,114		1,761
Other intangibles	1,065	[1]	966	[1]
Price risk management assets	920		655
Other noncurrent assets	790		571
Total Other Noncurrent Assets	8,238		5,133
Total Assets	42,648		32,837
Current Liabilities
Short-term debt	578		694
Less current portion of Long-term debt	0		502
Accounts payable	1,214		1,028
Customer deposits	0		0
Taxes	65		134
Interest	287		166
Dividends	207		174
Price risk management liabilities	1,570		1,144
Counterparty collateral	148		338
Regulatory liabilities	73		109
Other current liabilities	1,113		925
Total Current Liabilities	5,255		5,214
Long-term Debt	17,993		12,161
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	3,326		2,563
Investment tax credits	285		237
Price risk management liabilities	840		470
Accrued pension obligations	1,299		1,496
Asset retirement obligations	484		435
Regulatory liabilities	1,010		1,031
Other deferred credits and noncurrent liabilities	1,060		752
Total Deferred Credits and Other Noncurrent Liabilities	8,304		6,984
Commitments and Contingent Liabilities	0		0
Equity
Common stock	6	[2]	5	[2]
Additional paid-in capital	6,813		4,602
Earnings reinvested	4,797		4,082
Accumulated other comprehensive loss	(788)		(479)
Total Stockholders' Equity	10,828		8,210
Noncontrolling Interests	268		268
Total Equity	11,096		8,478
Total Liabilities and Equity	42,648		32,837
PPL Energy Supply [Member]
Current Assets
Cash and cash equivalents	379		661
Restricted cash and cash equivalents	145		19
Accounts receivable (less reserve:)
Customer	169		225
Other	31		24
Unbilled revenues	402		486
Accounts receivable from affiliates	89		124
Notes receivable from affiliates	198		0
Fuel, materials and supplies	298		297
Prepayments	14		89
Price risk management assets	2,527		1,907
Assets held for sale	0		374
Other current assets	11		22
Total Current Assets	4,263		4,228
Investments
Nuclear plant decommissioning trust funds	640		618
Other investments	40		37
Total Investments	680		655
Property, Plant and Equipment
Regulated utility plant	0		4,269
Less: accumulated depreciation - regulated utility plant	0		888
Regulated utility plant, net	0		3,381
Non-regulated property, plant and equipment
Generation	10,517		10,169
Nuclear fuel	658		578
Other	245		314
Less: accumulated depreciation - non-regulated property, plant and equipment	5,573		5,401
Non-regulated property, plant and equipment, net	5,847		5,660
Construction work in progress	639		594
Property, Plant and Equipment, net	6,486	[1]	9,635	[1]
Other Noncurrent Assets
Goodwill	86		765
Other intangibles	386	[1]	464	[1]
Price risk management assets	896		651
Other noncurrent assets	382		398
Total Other Noncurrent Assets	1,750		2,278
Total Assets	13,179		16,796
Current Liabilities
Short-term debt	400		531
Less current portion of Long-term debt	0		500
Accounts payable	472		592
Accounts payable to affiliates	14		43
Taxes	90		119
Interest	30		110
Price risk management liabilities	1,560		1,112
Counterparty collateral	148		338
Deferred income taxes	315		216
Other current liabilities	196		408
Total Current Liabilities	3,225		3,969
Long-term Debt	3,024		5,089
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,223		1,548
Investment tax credits	136		81
Price risk management liabilities	785		438
Accrued pension obligations	214		619
Asset retirement obligations	349		332
Other deferred credits and noncurrent liabilities	186		211
Total Deferred Credits and Other Noncurrent Liabilities	2,893		3,229
Commitments and Contingent Liabilities	0		0
Equity
Member's Equity	4,019		4,491
Noncontrolling Interests	18		18
Total Equity	4,037		4,509
Total Liabilities and Equity	13,179		16,796
PPL Electric [Member]
Current Assets
Cash and cash equivalents	320		204
Accounts receivable (less reserve:)
Customer	271		268
Other	9		24
Unbilled revenues	98		134
Accounts receivable from affiliates	35		8
Fuel, materials and supplies	42		47
Prepayments	78		136
Regulatory assets	0		63
Other current assets	30		4
Total Current Assets	883		888
Property, Plant and Equipment
Regulated utility plant	5,830		5,494
Less: accumulated depreciation - regulated utility plant	2,217		2,123
Regulated utility plant, net	3,613		3,371
Non-regulated property, plant and equipment
Other, net	2		2
Construction work in progress	242		177
Property, Plant and Equipment, net	3,857		3,550
Other Noncurrent Assets
Regulatory assets	729		592
Other intangibles	155		147
Other noncurrent assets	81		76
Total Other Noncurrent Assets	965		815
Total Assets	5,705		5,253
Current Liabilities
Short-term debt	0		0
Less current portion of Long-term debt	0		0
Accounts payable	171		221
Accounts payable to affiliates	64		73
Customer deposits	39		36
Taxes	0		23
Interest	24		17
Regulatory liabilities	53		18
Vacation	22		21
Other current liabilities	47		69
Total Current Liabilities	420		478
Long-term Debt	1,718		1,472
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,115		932
Investment tax credits	5		7
Accrued pension obligations	186		259
Regulatory liabilities	7		14
Other deferred credits and noncurrent liabilities	129		147
Total Deferred Credits and Other Noncurrent Liabilities	1,442		1,359
Equity
Preferred securities	250		250
Common stock	364	[3]	364	[3]
Additional paid-in capital	979		879
Earnings reinvested	532		451
Total Equity	2,125		1,944
Total Liabilities and Equity	5,705		5,253
LKE [Member]
Current Assets
Cash and cash equivalents	59		11
Short-term investments	0		163
Accounts receivable (less reserve:)
Customer	135		160
Other	14		33
Unbilled revenues	146		170
Accounts receivable from affiliates	0		2
Notes receivable from affiliates	15		61
Income taxes receivable	3		40
Fuel, materials and supplies	283		298
Prepayments	22		21
Deferred income taxes	17		66
Other intangibles	1		58
Regulatory assets	9		22
Other current assets	2		5
Total Current Assets	706		1,110
Investments
Investments	31		31
Property, Plant and Equipment
Regulated utility plant	7,519		6,230
Less: accumulated depreciation - regulated utility plant	277		31
Regulated utility plant, net	7,242		6,199
Non-regulated property, plant and equipment
Other, net	2		4
Construction work in progress	557		1,340
Property, Plant and Equipment, net	7,801		7,543
Other Noncurrent Assets
Regulatory assets	620		588
Goodwill	996		996
Other intangibles	314		356
Other noncurrent assets	108		94
Total Other Noncurrent Assets	2,038		2,034
Total Assets	10,576		10,718
Current Liabilities
Short-term debt	0		163
Less current portion of Long-term debt	0		2
Accounts payable	224		189
Accounts payable to affiliates	2		3
Customer deposits	45		46
Taxes	25		27
Interest	23		17
Price risk management liabilities	0		0
Regulatory liabilities	20		91
Salaries and benefits payable	64		69
Other current liabilities	30		36
Total Current Liabilities	433		643
Long-term Debt	4,073		3,823
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	413		240
Investment tax credits	144		150
Price risk management liabilities	55		32
Accrued pension obligations	359		449
Asset retirement obligations	116		103
Regulatory liabilities	1,003		1,017
Other deferred credits and noncurrent liabilities	239		250
Total Deferred Credits and Other Noncurrent Liabilities	2,329		2,241
Equity
Member's Equity	3,741		4,011
Total Liabilities and Equity	10,576		10,718
LGE [Member]
Current Assets
Cash and cash equivalents	25		2
Short-term investments	0		163
Accounts receivable (less reserve:)
Customer	62		70
Other	7		13
Unbilled revenues	65		81
Accounts receivable from affiliates	11		30
Fuel, materials and supplies	142		162
Prepayments	7		7
Other intangibles	0		36
Regulatory assets	9		13
Other current assets	6		6
Total Current Assets	334		583
Property, Plant and Equipment
Regulated utility plant	2,956		2,600
Less: accumulated depreciation - regulated utility plant	116		17
Regulated utility plant, net	2,840		2,583
Non-regulated property, plant and equipment
Construction work in progress	215		385
Property, Plant and Equipment, net	3,055		2,968
Other Noncurrent Assets
Regulatory assets	403		367
Goodwill	389		389
Other intangibles	166		181
Other noncurrent assets	40		31
Total Other Noncurrent Assets	998		968
Total Assets	4,387		4,519
Current Liabilities
Short-term debt	0		163
Notes payable to affiliates	0		12
Accounts payable	94		100
Accounts payable to affiliates	26		20
Customer deposits	22		23
Taxes	13		10
Regulatory liabilities	10		51
Salaries and benefits payable	13		17
Other current liabilities	21		21
Total Current Liabilities	199		417
Long-term Debt	1,112		1,112
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	475		419
Investment tax credits	43		46
Price risk management liabilities	55		32
Accrued pension obligations	95		126
Asset retirement obligations	55		49
Regulatory liabilities	478		483
Other deferred credits and noncurrent liabilities	113		114
Total Deferred Credits and Other Noncurrent Liabilities	1,314		1,269
Equity
Common stock	424	[4]	424	[4]
Additional paid-in capital	1,278		1,278
Earnings reinvested	60		19
Total Equity	1,762		1,721
Total Liabilities and Equity	4,387		4,519
KU [Member]
Current Assets
Cash and cash equivalents	31		3
Accounts receivable (less reserve:)
Customer	73		90
Other	5		20
Unbilled revenues	81		89
Accounts receivable from affiliates	0		12
Fuel, materials and supplies	141		136
Prepayments	7		8
Other intangibles	1		22
Regulatory assets	0		9
Other current assets	12		7
Total Current Assets	351		396
Investments
Investments	31		30
Property, Plant and Equipment
Regulated utility plant	4,563		3,630
Less: accumulated depreciation - regulated utility plant	161		14
Regulated utility plant, net	4,402		3,616
Non-regulated property, plant and equipment
Construction work in progress	340		955
Property, Plant and Equipment, net	4,742		4,571
Other Noncurrent Assets
Regulatory assets	217		221
Goodwill	607		607
Other intangibles	148		175
Other noncurrent assets	60		58
Total Other Noncurrent Assets	1,032		1,061
Total Assets	6,156		6,058
Current Liabilities
Notes payable to affiliates	0		10
Accounts payable	112		67
Accounts payable to affiliates	33		45
Customer deposits	23		23
Taxes	11		25
Interest	11		8
Regulatory liabilities	10		40
Salaries and benefits payable	14		15
Other current liabilities	14		18
Total Current Liabilities	228		251
Long-term Debt	1,842		1,841
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	484		376
Investment tax credits	101		104
Accrued pension obligations	83		113
Asset retirement obligations	61		54
Regulatory liabilities	525		534
Other deferred credits and noncurrent liabilities	87		94
Total Deferred Credits and Other Noncurrent Liabilities	1,341		1,275
Equity
Common stock	308	[5]	308	[5]
Additional paid-in capital	2,348		2,348
Earnings reinvested	89		35
Total Equity	2,745		2,691
Total Liabilities and Equity	$ 6,156		$ 6,058

[1] At December 31, 2011 and December 31, 2010, includes $416 million and $424 million of PP&E, consisting primarily of "Generation," including leasehold improvements, and $11 million of "Other intangibles" from the consolidation of a VIE that is the owner/lessor of the Lower Mt. Bethel plant. See Note 22 for additional information.

[2] 780,000 shares authorized; 578,405 and 483,391 shares issued and outstanding at December 31, 2011 and December 31, 2010.

[3] 170,000 shares authorized; 66,368 shares issued and outstanding at December 31, 2011 and December 31, 2010.

[4] 75,000 shares authorized; 21,294 shares issued and outstanding at December 31, 2011 and December 31, 2010.

[5] 80,000 shares authorized; 37,818 shares issued and outstanding at December 31, 2011 and December 31, 2010.