CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 1,291		$ 901
Restricted cash and cash equivalents	52		54
Accounts receivable (less reserve:)
Customer	857		745
Other	117		79
Unbilled revenues	652		857
Fuel, materials and supplies	686		673
Prepayments	173		166
Price risk management assets	1,045		1,525
Regulatory assets	31		19
Other current assets	67		49
Total Current Assets	4,971		5,068
Investments
Nuclear plant decommissioning trust funds	804		712
Other investments	47		47
Total Investments	851		759
Property, Plant and Equipment
Regulated utility plant	26,498		25,196
Less: accumulated depreciation - regulated utility plant	4,636		4,164
Regulated utility plant, net	21,862		21,032
Non-regulated property, plant and equipment
Generation	11,653		11,295
Nuclear fuel	590		524
Other	834		726
Less: accumulated depreciation - non-regulated property, plant and equipment	6,173		5,942
Non-regulated property, plant and equipment, net	6,904		6,603
Construction work in progress	2,822		2,397
Property, Plant and Equipment, net	31,588	[1]	30,032	[1]
Assets, Noncurrent [Abstract]
Regulatory assets	1,423		1,483
Goodwill	4,050		4,158
Other intangibles	932		925
Price risk management assets	550		572
Other noncurrent assets	623		637
Total Other Noncurrent Assets	7,578		7,775
Total Assets	44,988		43,634
Current Liabilities
Short-term debt	499		652
Long-term debt due within one year	751		751
Accounts payable	1,079		1,252
Taxes	170		90
Interest	325		325
Dividends	232		210
Price risk management liabilities	823		1,065
Regulatory liabilities	68		61
Other current liabilities	1,001		1,219
Total Current Liabilities	4,948		5,625
Long-term Debt	19,092		18,725
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	3,777		3,387
Investment tax credits	345		328
Price risk management liabilities	538		629
Accrued pension obligations	1,529		2,076
Asset retirement obligations	678		536
Regulatory liabilities	1,054		1,010
Other deferred credits and noncurrent liabilities	665		820
Total Deferred Credits and Other Noncurrent Liabilities	8,586		8,786
Commitments and Contingent Liabilities
Equity
Common stock	6	[2]	6	[2]
Additional paid-in capital	8,305		6,936
Earnings reinvested	6,040		5,478
Accumulated other comprehensive income (loss)	(2,007)		(1,940)
Total Stockholders' Equity	12,344		10,480
Noncontrolling Interests	18		18
Total Equity	12,362		10,498
Total Liabilities and Equity	44,988		43,634
PPL Energy Supply LLC [Member]
Current Assets
Cash and cash equivalents	551		413
Restricted cash and cash equivalents	37		46
Accounts receivable (less reserve:)
Customer	203		183
Other	104		31
Unbilled revenues	234		369
Accounts receivable from affiliates	37		125
Fuel, materials and supplies	345		327
Prepayments	22		15
Price risk management assets	961		1,511
Other current assets	22		10
Total Current Assets	2,516		3,030
Investments
Nuclear plant decommissioning trust funds	804		712
Other investments	41		41
Total Investments	845		753
Non-regulated property, plant and equipment
Generation	11,663		11,305
Nuclear fuel	590		524
Other	307		294
Less: accumulated depreciation - non-regulated property, plant and equipment	6,025		5,817
Non-regulated property, plant and equipment, net	6,535		6,306
Construction work in progress	739		987
Property, Plant and Equipment, net	7,274	[1]	7,293	[1]
Assets, Noncurrent [Abstract]
Goodwill	86		86
Other intangibles	262		252
Price risk management assets	519		557
Other noncurrent assets	362		404
Total Other Noncurrent Assets	1,229		1,299
Total Assets	11,864		12,375
Current Liabilities
Short-term debt			356
Long-term debt due within one year	741		751
Accounts payable	328		438
Accounts payable to affiliates	3		31
Taxes	19		62
Interest	53		31
Price risk management liabilities	773		1,010
Deferred income taxes	45		158
Other current liabilities	264		319
Total Current Liabilities	2,226		3,156
Long-term Debt	2,221		2,521
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,429		1,232
Investment tax credits	207		186
Price risk management liabilities	462		556
Accrued pension obligations	203		293
Asset retirement obligations	388		365
Other deferred credits and noncurrent liabilities	180		218
Total Deferred Credits and Other Noncurrent Liabilities	2,869		2,850
Commitments and Contingent Liabilities
Equity
Accumulated other comprehensive income (loss)	4		48
Member's Equity	4,530		3,830
Noncontrolling Interests	18		18
Total Equity	4,548		3,848
Total Liabilities and Equity	11,864		12,375
PPL Electric Utilities Corp [Member]
Current Assets
Cash and cash equivalents	225		140
Accounts receivable (less reserve:)
Customer	273		249
Other	14		5
Unbilled revenues	76		110
Accounts receivable from affiliates	4		29
Fuel, materials and supplies	35		39
Prepayments	67		76
Deferred income taxes	46		45
Regulatory assets	2
Other current assets	18		4
Total Current Assets	758		697
Property, Plant and Equipment
Regulated utility plant	6,771		6,286
Less: accumulated depreciation - regulated utility plant	2,421		2,316
Regulated utility plant, net	4,350		3,970
Non-regulated property, plant and equipment
Other, net	2		2
Construction work in progress	519		370
Property, Plant and Equipment, net	4,871		4,342
Assets, Noncurrent [Abstract]
Regulatory assets	857		853
Other intangibles	208		171
Other noncurrent assets	35		55
Total Other Noncurrent Assets	1,100		1,079
Total Assets	6,729		6,118
Current Liabilities
Long-term debt due within one year	10
Accounts payable	244		259
Accounts payable to affiliates	46		63
Taxes	36		12
Interest	23		26
Regulatory liabilities	51		52
Other current liabilities	94		93
Total Current Liabilities	504		505
Long-term Debt	2,305		1,967
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,334		1,233
Investment tax credits	3		3
Accrued pension obligations	157		237
Regulatory liabilities	14		8
Other deferred credits and noncurrent liabilities	79		103
Total Deferred Credits and Other Noncurrent Liabilities	1,587		1,584
Commitments and Contingent Liabilities
Equity
Common stock	364	[3]	364	[3]
Additional paid-in capital	1,340		1,135
Earnings reinvested	629		563
Total Stockholders' Equity	2,333		2,062
Total Liabilities and Equity	6,729		6,118
LG And E And KU Energy LLC [Member]
Current Assets
Cash and cash equivalents	21		43
Accounts receivable (less reserve:)
Customer	216		133
Other	18		20
Unbilled revenues	137		156
Accounts receivable from affiliates			1
Fuel, materials and supplies	275		276
Prepayments	24		28
Price risk management assets from affiliates			14
Deferred income taxes	20		13
Regulatory assets	29		19
Other current assets	6		4
Total Current Assets	746		707
Property, Plant and Equipment
Regulated utility plant	8,434		8,073
Less: accumulated depreciation - regulated utility plant	713		519
Regulated utility plant, net	7,721		7,554
Non-regulated property, plant and equipment
Other, net	3		3
Construction work in progress	1,341		750
Property, Plant and Equipment, net	9,065		8,307
Assets, Noncurrent [Abstract]
Regulatory assets	566		630
Goodwill	996		996
Other intangibles	232		271
Other noncurrent assets	97		108
Total Other Noncurrent Assets	1,891		2,005
Total Assets	11,702		11,019
Current Liabilities
Short-term debt	212		125
Notes payable with affiliates	52		25
Accounts payable	312		283
Accounts payable to affiliates	2		1
Customer deposits	49		48
Taxes	109		26
Interest	51		21
Price risk management liabilities	4		5
Price risk management liabilities from affiliates	14
Regulatory liabilities	17		9
Other current liabilities	104		100
Total Current Liabilities	926		643
Long-term Debt	4,076		4,075
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	651		541
Investment tax credits	136		138
Price risk management liabilities	37		53
Accrued pension obligations	267		414
Asset retirement obligations	245		125
Regulatory liabilities	1,040		1,002
Other deferred credits and noncurrent liabilities	249		242
Total Deferred Credits and Other Noncurrent Liabilities	2,625		2,515
Commitments and Contingent Liabilities
Equity
Member's Equity	4,075		3,786
Total Liabilities and Equity	11,702		11,019
Louisville Gas And Electric Co [Member]
Current Assets
Cash and cash equivalents	12		22
Accounts receivable (less reserve:)
Customer	93		59
Other	9		16
Unbilled revenues	62		72
Accounts receivable from affiliates	8		14
Fuel, materials and supplies	140		142
Prepayments	4		7
Price risk management assets from affiliates			7
Deferred income taxes	3
Regulatory assets	19		19
Other current assets	1		1
Total Current Assets	351		359
Property, Plant and Equipment
Regulated utility plant	3,340		3,187
Less: accumulated depreciation - regulated utility plant	309		220
Regulated utility plant, net	3,031		2,967
Non-regulated property, plant and equipment
Other, net	1
Construction work in progress	490		259
Property, Plant and Equipment, net	3,522		3,226
Assets, Noncurrent [Abstract]
Regulatory assets	359		400
Goodwill	389		389
Other intangibles	126		144
Other noncurrent assets	33		44
Total Other Noncurrent Assets	907		977
Total Assets	4,780		4,562
Current Liabilities
Short-term debt	72		55
Accounts payable	147		117
Accounts payable to affiliates	30		23
Customer deposits	24		23
Taxes	34		2
Interest	10		5
Price risk management liabilities	4		5
Price risk management liabilities from affiliates	7
Regulatory liabilities	11		4
Other current liabilities	34		34
Total Current Liabilities	373		268
Long-term Debt	1,112		1,112
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	577		544
Investment tax credits	39		40
Price risk management liabilities	37		53
Accrued pension obligations	56		102
Asset retirement obligations	69		56
Regulatory liabilities	489		471
Other deferred credits and noncurrent liabilities	109		106
Total Deferred Credits and Other Noncurrent Liabilities	1,376		1,372
Commitments and Contingent Liabilities
Equity
Common stock	424	[4]	424	[4]
Additional paid-in capital	1,332		1,278
Earnings reinvested	163		108
Total Stockholders' Equity	1,919		1,810
Total Liabilities and Equity	4,780		4,562
Kentucky Utilities Co [Member]
Current Assets
Cash and cash equivalents	9		21
Accounts receivable (less reserve:)
Customer	123		74
Other	8		13
Unbilled revenues	75		84
Accounts receivable from affiliates	10		7
Fuel, materials and supplies	135		134
Prepayments	11		10
Price risk management assets from affiliates			7
Deferred income taxes	3		3
Regulatory assets	10
Other current assets	5		3
Total Current Assets	389		356
Property, Plant and Equipment
Regulated utility plant	5,094		4,886
Less: accumulated depreciation - regulated utility plant	404		299
Regulated utility plant, net	4,690		4,587
Non-regulated property, plant and equipment
Other, net	1		1
Construction work in progress	849		490
Property, Plant and Equipment, net	5,540		5,078
Assets, Noncurrent [Abstract]
Regulatory assets	207		230
Goodwill	607		607
Other intangibles	106		127
Other noncurrent assets	57		57
Total Other Noncurrent Assets	977		1,021
Total Assets	6,906		6,455
Current Liabilities
Short-term debt	140		70
Accounts payable	155		147
Accounts payable to affiliates	24		33
Customer deposits	25		25
Taxes	65		26
Interest	25		10
Price risk management liabilities from affiliates	7
Regulatory liabilities	6		5
Other current liabilities	31		33
Total Current Liabilities	478		349
Long-term Debt	1,843		1,842
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	660		587
Investment tax credits	97		98
Accrued pension obligations	45		104
Asset retirement obligations	176		69
Regulatory liabilities	551		531
Other deferred credits and noncurrent liabilities	93		92
Total Deferred Credits and Other Noncurrent Liabilities	1,622		1,481
Commitments and Contingent Liabilities
Equity
Common stock	308	[5]	308	[5]
Additional paid-in capital	2,440		2,348
Earnings reinvested	214		126
Accumulated other comprehensive income (loss)	1		1
Total Stockholders' Equity	2,963		2,783
Total Liabilities and Equity	$ 6,906		$ 6,455

[1] At September 30, 2013 and December 31, 2012, includes $413 million and $428 million of PP&E, consisting primarily of "Generation," including leasehold improvements from the consolidation of a VIE that is the owner/lessor of the Lower Mt. Bethel plant.

[2] 780,000 shares authorized; 630,239 and 581,944 shares issued and outstanding at September 30, 2013 and December 31, 2012.

[3] 170,000 shares authorized; 66,368 shares issued and outstanding at September 30, 2013 and December 31, 2012.

[4] 75,000 shares authorized; 21,294 shares issued and outstanding at September 30, 2013 and December 31, 2012.

[5] 80,000 shares authorized; 37,818 shares issued and outstanding at September 30, 2013 and December 31, 2012.