CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 1,256		$ 1,102
Restricted cash and cash equivalents	416		83
Accounts receivable (less reserve:)
Customer	1,108		923
Other	103		97
Unbilled revenues	874		835
Fuel, materials and supplies	607		702
Prepayments	224		153
Deferred income taxes	342		246
Price risk management assets	1,087		942
Regulatory assets	32		33
Other current assets	45		37
Total Current Assets	6,094		5,153
Investments
Nuclear plant decommissioning trust funds	879		864
Other investments	39		43
Total Investments	918		907
Property, Plant and Equipment
Regulated utility plant	28,616		27,755
Less: accumulated depreciation - regulated utility plant	5,108		4,873
Regulated utility plant, net	23,508		22,882
Non-regulated property, plant and equipment
Generation	11,818		11,881
Nuclear fuel	712		591
Other	854		834
Less: accumulated depreciation - non-regulated property, plant and equipment	6,283		6,172
Non-regulated property, plant and equipment, net	7,101		7,134
Construction work in progress	3,165		3,071
Property, Plant and Equipment, net	33,774		33,087
Assets, Noncurrent [Abstract]
Regulatory assets	1,245		1,246
Goodwill	4,298		4,225
Other intangibles	943		947
Price risk management assets	344		337
Other noncurrent assets	357		357
Total Other Noncurrent Assets	7,187		7,112
Total Assets	47,973		46,259
Current Liabilities
Short-term debt	1,579		701
Long-term debt due within one year	304		315
Accounts payable	1,345		1,308
Taxes	240		114
Interest	358		325
Dividends	236		232
Price risk management liabilities	1,302		829
Regulatory liabilities	80		90
Other current liabilities	932		998
Total Current Liabilities	6,376		4,912
Long-term Debt	20,514		20,592
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	4,096		3,928
Investment tax credits	281		342
Price risk management liabilities	450		415
Accrued pension obligations	1,159		1,286
Asset retirement obligations	701		687
Regulatory liabilities	1,037		1,048
Other deferred credits and noncurrent liabilities	642		583
Total Deferred Credits and Other Noncurrent Liabilities	8,366		8,289
Commitments and Contingent Liabilities
Equity
Common stock	6	[1]	6	[1]
Additional paid-in capital	8,352		8,316
Earnings reinvested	5,788		5,709
Accumulated other comprehensive income (loss)	(1,429)		(1,565)
Total Stockholders' Equity	12,717		12,466
Total Liabilities and Equity	47,973		46,259
PPL Energy Supply LLC [Member]
Current Assets
Cash and cash equivalents	441		239
Restricted cash and cash equivalents	412		68
Accounts receivable (less reserve:)
Customer	232		233
Other	92		97
Unbilled revenues	378		286
Accounts receivable from affiliates	66		45
Fuel, materials and supplies	315		358
Prepayments	30		20
Deferred income taxes	87
Price risk management assets	1,080		860
Other current assets	30		27
Total Current Assets	3,163		2,233
Investments
Nuclear plant decommissioning trust funds	879		864
Other investments	34		37
Total Investments	913		901
Non-regulated property, plant and equipment
Generation	11,826		11,891
Nuclear fuel	712		591
Other	290		288
Less: accumulated depreciation - non-regulated property, plant and equipment	6,141		6,046
Non-regulated property, plant and equipment, net	6,687		6,724
Construction work in progress	369		450
Property, Plant and Equipment, net	7,056		7,174
Assets, Noncurrent [Abstract]
Goodwill	86		86
Other intangibles	266		266
Price risk management assets	337		328
Other noncurrent assets	82		86
Total Other Noncurrent Assets	771		766
Total Assets	11,903		11,074
Current Liabilities
Short-term debt	970
Long-term debt due within one year	304		304
Accounts payable	490		393
Accounts payable to affiliates	33		4
Taxes	84		31
Interest	43		22
Price risk management liabilities	1,211		750
Other current liabilities	239		278
Total Current Liabilities	3,374		1,782
Long-term Debt	2,220		2,221
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,154		1,114
Investment tax credits	145		205
Price risk management liabilities	316		320
Accrued pension obligations	84		111
Asset retirement obligations	400		393
Other deferred credits and noncurrent liabilities	131		130
Total Deferred Credits and Other Noncurrent Liabilities	2,230		2,273
Commitments and Contingent Liabilities
Equity
Accumulated other comprehensive income (loss)	78		77
Member's Equity	4,079		4,798
Total Liabilities and Equity	11,903		11,074
PPL Electric Utilities Corp [Member]
Current Assets
Cash and cash equivalents	42		25
Accounts receivable (less reserve:)
Customer	387		284
Other	9		5
Unbilled revenues	105		116
Accounts receivable from affiliates	4		4
Notes receivable from affiliates			150
Fuel, materials and supplies	34		35
Prepayments	101		40
Deferred income taxes	82		85
Regulatory assets	1		6
Other current assets	10		22
Total Current Assets	774		766
Property, Plant and Equipment
Regulated utility plant	6,998		6,886
Less: accumulated depreciation - regulated utility plant	2,454		2,417
Regulated utility plant, net	4,544		4,469
Non-regulated property, plant and equipment
Other, net	1		2
Construction work in progress	684		591
Property, Plant and Equipment, net	5,229		5,062
Assets, Noncurrent [Abstract]
Regulatory assets	770		772
Other intangibles	214		211
Other noncurrent assets	35		35
Total Other Noncurrent Assets	1,019		1,018
Total Assets	7,022		6,846
Current Liabilities
Short-term debt	60		20
Long-term debt due within one year			10
Accounts payable	300		295
Accounts payable to affiliates	88		57
Taxes	39		51
Interest	23		34
Regulatory liabilities	68		76
Other current liabilities	83		82
Total Current Liabilities	661		625
Long-term Debt	2,306		2,305
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,439		1,399
Accrued pension obligations	78		96
Regulatory liabilities	13		15
Other deferred credits and noncurrent liabilities	58		57
Total Deferred Credits and Other Noncurrent Liabilities	1,588		1,567
Commitments and Contingent Liabilities
Equity
Common stock	364	[2]	364	[2]
Additional paid-in capital	1,405		1,340
Earnings reinvested	698		645
Total Stockholders' Equity	2,467		2,349
Total Liabilities and Equity	7,022		6,846
LG And E And KU Energy LLC [Member]
Current Assets
Cash and cash equivalents	30		35
Accounts receivable (less reserve:)
Customer	265		224
Other	27		20
Unbilled revenues	144		180
Notes receivable from affiliates	4		70
Fuel, materials and supplies	225		278
Prepayments	22		21
Deferred income taxes	139		159
Regulatory assets	31		27
Other current assets	3		3
Total Current Assets	890		1,017
Property, Plant and Equipment
Regulated utility plant	8,683		8,526
Less: accumulated depreciation - regulated utility plant	849		778
Regulated utility plant, net	7,834		7,748
Non-regulated property, plant and equipment
Other, net	3		3
Construction work in progress	1,868		1,793
Property, Plant and Equipment, net	9,705		9,544
Assets, Noncurrent [Abstract]
Regulatory assets	475		474
Goodwill	996		996
Other intangibles	209		221
Other noncurrent assets	96		98
Total Other Noncurrent Assets	1,776		1,789
Total Assets	12,371		12,350
Current Liabilities
Short-term debt	200		245
Accounts payable	341		346
Accounts payable to affiliates	3		3
Customer deposits	50		50
Taxes	25		39
Interest	59		23
Price risk management liabilities	4		4
Regulatory liabilities	12		14
Other current liabilities	87		111
Total Current Liabilities	781		835
Long-term Debt	4,565		4,565
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,021		965
Investment tax credits	134		135
Price risk management liabilities	36		32
Accrued pension obligations	119		152
Asset retirement obligations	251		245
Regulatory liabilities	1,024		1,033
Other deferred credits and noncurrent liabilities	240		238
Total Deferred Credits and Other Noncurrent Liabilities	2,825		2,800
Commitments and Contingent Liabilities
Equity
Member's Equity	4,200		4,150
Total Liabilities and Equity	12,371		12,350
Louisville Gas And Electric Co [Member]
Current Assets
Cash and cash equivalents	9		8
Accounts receivable (less reserve:)
Customer	118		102
Other	8		9
Unbilled revenues	63		85
Accounts receivable from affiliates	23
Fuel, materials and supplies	110		154
Prepayments	7		7
Regulatory assets	22		17
Other current assets	5		3
Total Current Assets	365		385
Property, Plant and Equipment
Regulated utility plant	3,475		3,383
Less: accumulated depreciation - regulated utility plant	364		332
Regulated utility plant, net	3,111		3,051
Non-regulated property, plant and equipment
Construction work in progress	680		651
Property, Plant and Equipment, net	3,791		3,702
Assets, Noncurrent [Abstract]
Regulatory assets	303		303
Goodwill	389		389
Other intangibles	114		120
Other noncurrent assets	33		35
Total Other Noncurrent Assets	839		847
Total Assets	4,995		4,934
Current Liabilities
Short-term debt	15		20
Accounts payable	189		166
Accounts payable to affiliates	17		24
Customer deposits	24		24
Taxes	32		11
Interest	15		6
Price risk management liabilities	4		4
Regulatory liabilities	9		9
Other current liabilities	26		32
Total Current Liabilities	331		296
Long-term Debt	1,353		1,353
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	590		582
Investment tax credits	38		38
Price risk management liabilities	36		32
Accrued pension obligations	10		19
Asset retirement obligations	70		68
Regulatory liabilities	477		482
Other deferred credits and noncurrent liabilities	105		104
Total Deferred Credits and Other Noncurrent Liabilities	1,326		1,325
Commitments and Contingent Liabilities
Equity
Common stock	424	[3]	424	[3]
Additional paid-in capital	1,364		1,364
Earnings reinvested	197		172
Total Stockholders' Equity	1,985		1,960
Total Liabilities and Equity	4,995		4,934
Kentucky Utilities Co [Member]
Current Assets
Cash and cash equivalents	21		21
Accounts receivable (less reserve:)
Customer	147		122
Other	7		9
Unbilled revenues	81		95
Fuel, materials and supplies	115		124
Prepayments	5		4
Regulatory assets	9		10
Other current assets	12		6
Total Current Assets	397		391
Property, Plant and Equipment
Regulated utility plant	5,208		5,143
Less: accumulated depreciation - regulated utility plant	485		446
Regulated utility plant, net	4,723		4,697
Non-regulated property, plant and equipment
Other, net	1		1
Construction work in progress	1,185		1,139
Property, Plant and Equipment, net	5,909		5,837
Assets, Noncurrent [Abstract]
Regulatory assets	172		171
Goodwill	607		607
Other intangibles	95		101
Other noncurrent assets	56		56
Total Other Noncurrent Assets	930		935
Total Assets	7,236		7,163
Current Liabilities
Short-term debt	110		150
Accounts payable	140		159
Accounts payable to affiliates	41		25
Customer deposits	26		26
Taxes	21		33
Interest	29		11
Regulatory liabilities	3		5
Other current liabilities	30		36
Total Current Liabilities	400		445
Long-term Debt	2,091		2,091
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	699		658
Investment tax credits	96		97
Accrued pension obligations	9		11
Asset retirement obligations	181		177
Regulatory liabilities	547		551
Other deferred credits and noncurrent liabilities	90		89
Total Deferred Credits and Other Noncurrent Liabilities	1,622		1,583
Commitments and Contingent Liabilities
Equity
Common stock	308	[4]	308	[4]
Additional paid-in capital	2,545		2,505
Earnings reinvested	270		230
Accumulated other comprehensive income (loss)			1
Total Stockholders' Equity	3,123		3,044
Total Liabilities and Equity	$ 7,236		$ 7,163

[1] 780,000 shares authorized; 631,417 and 630,321 shares issued and outstanding at March 31, 2014 and December 31, 2013.

[2] 170,000 shares authorized; 66,368 shares issued and outstanding at March 31, 2014 and December 31, 2013.

[3] 75,000 shares authorized; 21,294 shares issued and outstanding at March 31, 2014 and December 31, 2013.

[4] 80,000 shares authorized; 37,818 shares issued and outstanding at March 31, 2014 and December 31, 2013.