CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents		$ 3,571	$ 442
Accounts receivable (less reserve:)
Customer		583	603
Other		58	86
Unbilled revenues		307	301
Fuel, materials and supplies		322	302
Prepayments		60	53
Regulatory assets		64	99
Other current assets		106	130
Total Current Assets		5,007	20,900
Property, Plant and Equipment
Regulated utility plant		30,477	29,040
Less: accumulated depreciation - regulated utility plant		6,488	6,008
Regulated utility plant, net		23,989	23,032
Non-regulated property, plant and equipment		266	237
Less: accumulated depreciation - non-regulated property, plant and equipment		41	37
Non-regulated property, plant and equipment, net		225	200
Construction work in progress		1,256	1,268
Property, Plant and Equipment, net		25,470	24,500
Other Noncurrent Assets
Regulatory assets		1,236	1,262
Goodwill		716	716
Other intangibles		343	351
Other noncurrent assets		451	387
Total Other Noncurrent Assets		2,746	2,716
Total Assets		33,223	48,116
Current Liabilities
Short-term debt		69	1,168
Long-term debt due within one year		474	1,074
Accounts payable		679	745
Taxes		96	69
Interest		81	113
Dividends		305	319
Regulatory liabilities		182	79
Other current liabilities		437	465
Total Current Liabilities		2,323	15,055
Long-term Debt [Abstract]
Long-term Debt		10,666	13,615
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		3,151	2,536
Investment tax credits		119	122
Accrued pension obligations		183	189
Asset retirement obligations		157	132
Regulatory liabilities		2,422	2,530
Other deferred credits and noncurrent liabilities		479	564
Total Deferred Credits and Other Noncurrent Liabilities		6,511	6,073
Commitments and Contingent Liabilities
Equity
Common stock	[1]	8	8
Additional paid-in capital		12,303	12,270
Earnings reinvested		2,572	5,315
Accumulated other comprehensive loss		(157)	(4,220)
Total Equity		13,723	13,373
Total Liabilities and Equity		$ 33,223	$ 48,116
Common stock par value		$ 0.01	$ 0.01
Total current assets held for sale		$ 0	$ 18,983
Total current liabilities held for sale		0	11,023
Treasury Stock		(1,003)	0
PPL Electric Utilities Corp [Member]
Current Assets
Cash and cash equivalents		21	40
Accounts receivable (less reserve:)
Customer		305	311
Other		22	17
Accounts receivable from affiliates		11	10
Notes Receivable, Related Parties, Current		499	0
Unbilled revenues		129	121
Fuel, materials and supplies		61	59
Prepayments		13	9
Regulatory assets		22	40
Other current assets		21	13
Total Current Assets		1,104	620
Property, Plant and Equipment
Regulated utility plant		14,082	13,514
Less: accumulated depreciation - regulated utility plant		3,386	3,297
Regulated utility plant, net		10,696	10,217
Construction work in progress		581	592
Property, Plant and Equipment, net		11,277	10,809
Other Noncurrent Assets
Regulatory assets		488	541
Other intangibles		270	268
Assets for Plan Benefits, Defined Benefit Plan		50	12
Other noncurrent assets		113	74
Total Other Noncurrent Assets		921	895
Total Assets		13,302	12,324
Current Liabilities
Long-term debt due within one year		474	400
Accounts payable		367	428
Accounts payable to affiliates		56	39
Taxes		31	17
Interest		35	39
Regulatory liabilities		153	68
Other current liabilities		108	105
Total Current Liabilities		1,224	1,096
Long-term Debt [Abstract]
Long-term Debt		4,010	3,836
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		1,668	1,559
Accrued pension obligations		8	8
Regulatory liabilities		559	578
Other deferred credits and noncurrent liabilities		97	123
Total Deferred Credits and Other Noncurrent Liabilities		2,332	2,268
Commitments and Contingent Liabilities
Equity
Common stock	[2]	364	364
Additional paid-in capital		4,254	3,753
Earnings reinvested		1,118	1,007
Total Equity		5,736	5,124
Total Liabilities and Equity		$ 13,302	$ 12,324
Common stock no par value		$ 0	$ 0
Louisville Gas And Electric Co [Member]
Current Assets
Cash and cash equivalents		$ 9	$ 7
Accounts receivable (less reserve:)
Customer		130	127
Other		25	35
Accounts receivable from affiliates		31	16
Unbilled revenues		80	79
Fuel, materials and supplies		137	119
Prepayments		14	14
Regulatory assets		33	23
Other current assets		2	1
Total Current Assets		461	421
Property, Plant and Equipment
Regulated utility plant		7,192	6,735
Less: accumulated depreciation - regulated utility plant		1,172	1,020
Regulated utility plant, net		6,020	5,715
Construction work in progress		242	320
Property, Plant and Equipment, net		6,262	6,035
Other Noncurrent Assets
Regulatory assets		337	351
Goodwill		389	389
Other intangibles		30	35
Other noncurrent assets		113	114
Total Other Noncurrent Assets		869	889
Total Assets		7,592	7,345
Current Liabilities
Short-term debt		69	262
Long-term debt due within one year		0	292
Notes payable with affiliates		324	0
Accounts payable		163	153
Accounts payable to affiliates		31	31
Taxes		34	32
Interest		15	15
Asset Retirement Obligations		10	10
Price risk management liabilities		1	2
Customer deposits		32	32
Regulatory liabilities		21	0
Other current liabilities		37	50
Total Current Liabilities		737	879
Long-term Debt [Abstract]
Long-term Debt		2,006	1,715
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		751	716
Investment tax credits		32	33
Price risk management liabilities		17	21
Asset retirement obligations		74	57
Regulatory liabilities		818	882
Other deferred credits and noncurrent liabilities		78	94
Total Deferred Credits and Other Noncurrent Liabilities		1,770	1,803
Commitments and Contingent Liabilities
Equity
Common stock	[3]	424	424
Additional paid-in capital		1,997	1,923
Earnings reinvested		658	601
Total Equity		3,079	2,948
Total Liabilities and Equity		$ 7,592	$ 7,345
Common stock no par value		$ 0	$ 0
Kentucky Utilities Co [Member]
Current Assets
Cash and cash equivalents		$ 13	$ 22
Accounts receivable (less reserve:)
Customer		144	156
Other		12	30
Accounts receivable from affiliates		0	1
Unbilled revenues		91	97
Fuel, materials and supplies		124	123
Prepayments		15	15
Regulatory assets		9	36
Other current assets		2	1
Total Current Assets		410	481
Property, Plant and Equipment
Regulated utility plant		9,219	8,808
Less: accumulated depreciation - regulated utility plant		1,929	1,690
Regulated utility plant, net		7,290	7,118
Construction work in progress		378	321
Property, Plant and Equipment, net		7,668	7,439
Other Noncurrent Assets
Regulatory assets		411	370
Goodwill		607	607
Other intangibles		23	26
Other noncurrent assets		153	149
Total Other Noncurrent Assets		1,194	1,152
Total Assets		9,272	9,072
Current Liabilities
Short-term debt		0	203
Long-term debt due within one year		0	132
Notes payable with affiliates		294	0
Accounts payable		108	121
Accounts payable to affiliates		64	43
Taxes		19	29
Interest		18	19
Asset Retirement Obligations		22	40
Customer deposits		32	32
Regulatory liabilities		8	11
Other current liabilities		47	59
Total Current Liabilities		612	689
Long-term Debt [Abstract]
Long-term Debt		2,618	2,486
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		865	835
Investment tax credits		87	88
Asset retirement obligations		83	75
Regulatory liabilities		1,045	1,070
Other deferred credits and noncurrent liabilities		34	47
Total Deferred Credits and Other Noncurrent Liabilities		2,114	2,115
Commitments and Contingent Liabilities
Equity
Common stock	[4]	308	308
Additional paid-in capital		2,957	2,857
Earnings reinvested		663	617
Total Equity		3,928	3,782
Total Liabilities and Equity		$ 9,272	$ 9,072
Common stock no par value		$ 0	$ 0

[1] 1,560,000 shares authorized; 769,890 shares issued and 735,112 shares outstanding at December 31, 2021. 1,560,000 shares authorized; 768,907 shares issued and outstanding at December 31, 2020.

[2] 170,000 shares authorized; 66,368 shares issued and outstanding at December 31, 2021 and December 31, 2020

[3] 75,000 shares authorized; 21,294 shares issued and outstanding at December 31, 2021 and December 31, 2020.

[4] 80,000 shares authorized; 37,818 shares issued and outstanding at December 31, 2021 and December 31, 2020.