CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents		$ 621	$ 485
Accounts receivable (less reserve:)
Customer		663	681
Other		107	100
Unbilled revenues		496	543
Fuel, materials and supplies		303	320
Prepayments		70	66
Price risk management assets		109	49
Regulatory assets		36	34
Other current assets		63	50
Total Current Assets		2,432	2,294
Property, Plant and Equipment
Regulated utility plant		39,734	38,228
Less: accumulated depreciation - regulated utility plant		7,310	6,785
Regulated utility plant, net		32,424	31,443
Non-regulated property, plant and equipment		355	384
Less: accumulated depreciation - non-regulated property, plant and equipment		101	110
Non-regulated property, plant and equipment, net		254	274
Construction work in progress		1,780	1,375
Property, Plant and Equipment, net		34,458	33,092
Other Noncurrent Assets
Regulatory assets		1,673	1,504
Goodwill		3,162	3,258
Other intangibles		716	697
Pension benefit asset		535	284
Price risk management assets		228	215
Other noncurrent assets		192	135
Total Other Noncurrent Assets		6,506	6,093
Total Assets		43,396	41,479
Current Liabilities
Short-term debt		1,430	1,080
Long-term debt due within one year		530	348
Accounts payable		989	924
Taxes		110	105
Interest		278	282
Dividends		296	273
Customer deposits		257	292
Regulatory liabilities		122	95
Other current liabilities		551	624
Total Current Liabilities		4,563	4,023
Long-term Debt [Abstract]
Long-term Debt		20,069	19,847
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		2,796	2,462
Investment tax credits		126	129
Accrued pension obligations		771	800
Asset retirement obligations		264	312
Regulatory liabilities		2,714	2,704
Other deferred credits and noncurrent liabilities		436	441
Total Deferred Credits and Other Noncurrent Liabilities		7,107	6,848
Equity
Common stock	[1]	7	7
Additional paid-in capital		11,021	10,305
Earnings reinvested		4,593	3,871
Accumulated other comprehensive loss		(3,964)	(3,422)
Total Equity		11,657	10,761
Total Liabilities and Equity		43,396	41,479
PPL Electric Utilities Corp [Member]
Current Assets
Cash and cash equivalents		267	49
Accounts receivable (less reserve:)
Customer		264	279
Other		38	71
Accounts receivable from affiliates		11	0
Unbilled revenues		120	127
Fuel, materials and supplies		25	34
Prepayments		5	6
Regulatory assets		11	16
Other current assets		9	6
Total Current Assets		750	588
Property, Plant and Equipment
Regulated utility plant		11,637	10,785
Less: accumulated depreciation - regulated utility plant		2,856	2,778
Regulated utility plant, net		8,781	8,007
Construction work in progress		586	508
Property, Plant and Equipment, net		9,367	8,515
Other Noncurrent Assets
Regulatory assets		824	709
Other intangibles		260	259
Other noncurrent assets		42	11
Total Other Noncurrent Assets		1,126	979
Total Assets		11,243	10,082
Current Liabilities
Long-term debt due within one year		0	0
Accounts payable		418	386
Accounts payable to affiliates		25	31
Taxes		12	8
Interest		37	36
Regulatory liabilities		74	86
Other current liabilities		101	98
Total Current Liabilities		667	645
Long-term Debt [Abstract]
Long-term Debt		3,694	3,298
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		1,320	1,154
Accrued pension obligations		282	246
Regulatory liabilities		675	668
Other deferred credits and noncurrent liabilities		144	79
Total Deferred Credits and Other Noncurrent Liabilities		2,421	2,147
Commitments and Contingent Liabilities
Equity
Common stock	[2]	364	364
Additional paid-in capital		3,158	2,729
Earnings reinvested		939	899
Total Equity		4,461	3,992
Total Liabilities and Equity		11,243	10,082
LG And E And KU Energy LLC [Member]
Current Assets
Cash and cash equivalents		24	30
Accounts receivable (less reserve:)
Customer		239	246
Other		63	44
Unbilled revenues		169	203
Fuel, materials and supplies		248	254
Prepayments		25	25
Regulatory assets		25	18
Other current assets		0	8
Total Current Assets		793	828
Property, Plant and Equipment
Regulated utility plant		13,721	13,187
Less: accumulated depreciation - regulated utility plant		2,125	1,785
Regulated utility plant, net		11,596	11,402
Construction work in progress		1,018	627
Property, Plant and Equipment, net		12,614	12,029
Other Noncurrent Assets
Regulatory assets		849	795
Goodwill		996	996
Other intangibles		78	86
Other noncurrent assets		82	68
Total Other Noncurrent Assets		2,005	1,945
Total Assets		15,412	14,802
Current Liabilities
Short-term debt		514	244
Long-term debt due within one year		530	98
Notes payable with affiliates		113	225
Accounts payable		366	338
Accounts payable to affiliates		9	7
Taxes		63	66
Interest		32	32
Asset Retirement Obligations		82	85
Price risk management liabilities		4	4
Customer deposits		61	58
Regulatory liabilities		48	9
Other current liabilities		126	161
Total Current Liabilities		1,948	1,327
Long-term Debt [Abstract]
Long-term debt		4,322	4,661
Long-term debt to affiliate		650	400
Long-term Debt		4,972	5,061
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		956	866
Investment tax credits		126	129
Price risk management liabilities		16	22
Accrued pension obligations		282	365
Asset retirement obligations		214	271
Regulatory liabilities		2,039	2,036
Other deferred credits and noncurrent liabilities		136	162
Total Deferred Credits and Other Noncurrent Liabilities		3,769	3,851
Commitments and Contingent Liabilities
Equity
Accumulated other comprehensive loss		(89)	(88)
Member's Equity		4,723	4,563
Total Liabilities and Equity		15,412	14,802
Louisville Gas And Electric Co [Member]
Current Assets
Cash and cash equivalents		10	15
Accounts receivable (less reserve:)
Customer		110	116
Other		30	13
Accounts receivable from affiliates		24	24
Unbilled revenues		77	91
Fuel, materials and supplies		127	131
Prepayments		12	11
Regulatory assets		21	12
Other current assets		0	3
Total Current Assets		411	416
Property, Plant and Equipment
Regulated utility plant		5,816	5,587
Less: accumulated depreciation - regulated utility plant		741	614
Regulated utility plant, net		5,075	4,973
Construction work in progress		514	305
Property, Plant and Equipment, net		5,589	5,278
Other Noncurrent Assets
Regulatory assets		431	411
Goodwill		389	389
Other intangibles		47	53
Other noncurrent assets		16	12
Total Other Noncurrent Assets		883	865
Total Assets		6,883	6,559
Current Liabilities
Short-term debt		279	199
Long-term debt due within one year		434	98
Accounts payable		172	179
Accounts payable to affiliates		26	23
Taxes		26	25
Interest		11	11
Asset Retirement Obligations		23	24
Price risk management liabilities		4	4
Customer deposits		29	27
Regulatory liabilities		17	3
Other current liabilities		39	52
Total Current Liabilities		1,060	645
Long-term Debt [Abstract]
Long-term Debt		1,375	1,611
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		628	572
Investment tax credits		34	35
Price risk management liabilities		16	22
Accrued pension obligations		11	45
Asset retirement obligations		80	97
Regulatory liabilities		915	919
Other deferred credits and noncurrent liabilities		77	86
Total Deferred Credits and Other Noncurrent Liabilities		1,761	1,776
Commitments and Contingent Liabilities
Equity
Common stock	[3]	424	424
Additional paid-in capital		1,795	1,712
Earnings reinvested		468	391
Total Equity		2,687	2,527
Total Liabilities and Equity		6,883	6,559
Kentucky Utilities Co [Member]
Current Assets
Cash and cash equivalents		14	15
Accounts receivable (less reserve:)
Customer		129	130
Other		34	30
Unbilled revenues		92	112
Fuel, materials and supplies		121	123
Prepayments		11	14
Regulatory assets		4	6
Other current assets		0	5
Total Current Assets		405	435
Property, Plant and Equipment
Regulated utility plant		7,895	7,592
Less: accumulated depreciation - regulated utility plant		1,382	1,170
Regulated utility plant, net		6,513	6,422
Construction work in progress		503	321
Property, Plant and Equipment, net		7,016	6,743
Other Noncurrent Assets
Regulatory assets		418	384
Goodwill		607	607
Other intangibles		31	33
Other noncurrent assets		63	52
Total Other Noncurrent Assets		1,119	1,076
Total Assets		8,540	8,254
Current Liabilities
Short-term debt		235	45
Long-term debt due within one year		96	0
Accounts payable		171	137
Accounts payable to affiliates		53	53
Taxes		24	19
Interest		16	16
Asset Retirement Obligations		59	61
Customer deposits		32	31
Regulatory liabilities		31	6
Other current liabilities		35	46
Total Current Liabilities		752	414
Long-term Debt [Abstract]
Long-term Debt		2,225	2,328
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		735	691
Investment tax credits		92	94
Accrued pension obligations		1	36
Asset retirement obligations		134	174
Regulatory liabilities		1,124	1,117
Other deferred credits and noncurrent liabilities		35	43
Total Deferred Credits and Other Noncurrent Liabilities		2,121	2,155
Commitments and Contingent Liabilities
Equity
Common stock	[4]	308	308
Additional paid-in capital		2,661	2,616
Earnings reinvested		473	433
Total Equity		3,442	3,357
Total Liabilities and Equity		$ 8,540	$ 8,254

[1] 1,560,000 shares authorized; 720,323 and 693,398 shares issued and outstanding at December 31, 2018 and December 31, 2017.

[2] 170,000 shares authorized; 66,368 shares issued and outstanding at December 31, 2018 and December 31, 2017

[3] 75,000 shares authorized; 21,294 shares issued and outstanding at December 31, 2018 and December 31, 2017.

[4] 80,000 shares authorized; 37,818 shares issued and outstanding at December 31, 2018 and December 31, 2017.