CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions		Mar. 31, 2022	Dec. 31, 2021
Assets, Current [Abstract]
Cash and cash equivalents		$ 4,249	$ 3,571
Accounts receivable (less reserve:)
Customer		625	583
Other		44	58
Unbilled revenues		279	307
Fuel, materials and supplies		280	322
Prepayments		135	60
Regulatory Assets, Current		58	64
Other current assets		101	106
Total Current Assets		5,713	5,007
Property, Plant and Equipment
Regulated utility plant		30,679	30,477
Less:  accumulated depreciation - regulated utility plant		6,599	6,488
Regulated utility plant, net		24,080	23,989
Non-regulated property, plant and equipment		278	266
Less:  accumulated depreciation - non-regulated property, plant and equipment		41	41
Non-regulated property, plant and equipment, net		237	225
Construction work in progress		1,328	1,256
Property, Plant and Equipment, net		25,645	25,470
Other Noncurrent Assets
Regulatory assets		1,219	1,236
Goodwill		716	716
Other intangibles		340	343
Other noncurrent assets		474	451
Assets, Noncurrent		2,749	2,746
Total Assets		34,107	33,223
Current Liabilities
Short-term debt		985	69
Long-term debt due within one year		474	474
Accounts payable		686	679
Taxes		92	96
Interest		138	81
Dividends		147	305
Regulatory liabilities		122	182
Other current liabilities		389	437
Liabilities, Current, Total		3,033	2,323
Long-term Debt, Unclassified [Abstract]
Long-term Debt		10,668	10,666
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		3,211	3,151
Investment tax credits		124	119
Accrued pension obligations		183	183
Asset retirement obligations		151	157
Regulatory liabilities		2,417	2,422
Other deferred credits and noncurrent liabilities		455	479
Total Deferred Credits and Other Noncurrent Liabilities		6,541	6,511
Commitments and Contingent Liabilities
Equity
Common stock	[1]	8	8
Additional paid-in capital		12,299	12,303
Treasury Stock		(987)	(1,003)
Earnings reinvested		2,697	2,572
Accumulated other comprehensive loss		(152)	(157)
Total Equity		13,865	13,723
Total Liabilities and Equity		34,107	33,223
PPL Electric Utilities Corp [Member]
Assets, Current [Abstract]
Cash and cash equivalents		46	21
Accounts receivable (less reserve:)
Customer		333	305
Other		27	22
Accounts receivable from affiliates		9	11
Notes receivable from affiliate		296	499
Notes receivable from affiliate		296	499
Unbilled revenues		115	129
Fuel, materials and supplies		64	61
Prepayments		85	13
Regulatory Assets, Current		13	22
Other current assets		28	21
Total Current Assets		1,016	1,104
Property, Plant and Equipment
Regulated utility plant		14,177	14,082
Less:  accumulated depreciation - regulated utility plant		3,396	3,386
Regulated utility plant, net		10,781	10,696
Construction work in progress		641	581
Property, Plant and Equipment, net		11,422	11,277
Other Noncurrent Assets
Regulatory assets		475	488
Other intangibles		270	270
Pension benefit asset		67	50
Other noncurrent assets		124	113
Assets, Noncurrent		936	921
Total Assets		13,374	13,302
Current Liabilities
Long-term debt due within one year		474	474
Accounts payable		411	367
Accounts payable to affiliates		82	56
Taxes		16	31
Interest		45	35
Regulatory liabilities		101	153
Other current liabilities		108	108
Liabilities, Current, Total		1,237	1,224
Long-term Debt, Unclassified [Abstract]
Long-term Debt		4,011	4,010
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		1,716	1,668
Regulatory liabilities		555	559
Other deferred credits and noncurrent liabilities		88	105
Total Deferred Credits and Other Noncurrent Liabilities		2,359	2,332
Commitments and Contingent Liabilities
Equity
Common stock	[2]	364	364
Additional paid-in capital		4,214	4,254
Earnings reinvested		1,189	1,118
Total Equity		5,767	5,736
Total Liabilities and Equity		13,374	13,302
Louisville Gas And Electric Co [Member]
Assets, Current [Abstract]
Cash and cash equivalents		9	9
Accounts receivable (less reserve:)
Customer		133	130
Other		12	25
Accounts receivable from affiliates		29	31
Notes receivable from affiliate		4	0
Notes receivable from affiliate		4	0
Unbilled revenues		70	80
Fuel, materials and supplies		95	137
Prepayments		14	14
Regulatory Assets, Current		31	33
Other current assets		0	2
Total Current Assets		397	461
Property, Plant and Equipment
Regulated utility plant		7,245	7,192
Less:  accumulated depreciation - regulated utility plant		1,208	1,172
Regulated utility plant, net		6,037	6,020
Construction work in progress		226	242
Property, Plant and Equipment, net		6,263	6,262
Other Noncurrent Assets
Regulatory assets		329	337
Goodwill		389	389
Other intangibles		28	30
Other noncurrent assets		118	113
Assets, Noncurrent		864	869
Total Assets		7,524	7,592
Current Liabilities
Short-term debt		353	69
Notes Payable, Related Parties, Current		0	324
Accounts payable		127	163
Accounts payable to affiliates		21	31
Taxes		34	34
Price risk management liabilities current		1	1
Interest		32	15
Current Customer Deposits		32	32
Regulatory liabilities		14	21
Asset Retirement Obligation, Current		10	10
Other current liabilities		30	37
Liabilities, Current, Total		654	737
Long-term Debt, Unclassified [Abstract]
Long-term Debt		2,006	2,006
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		756	751
Investment tax credits		32	32
Asset retirement obligations		69	74
Regulatory liabilities		820	818
Price risk management liabilities		13	17
Other deferred credits and noncurrent liabilities		77	78
Total Deferred Credits and Other Noncurrent Liabilities		1,767	1,770
Commitments and Contingent Liabilities
Equity
Common stock	[3]	424	424
Additional paid-in capital		1,997	1,997
Earnings reinvested		676	658
Total Equity		3,097	3,079
Total Liabilities and Equity		7,524	7,592
Kentucky Utilities Co [Member]
Assets, Current [Abstract]
Cash and cash equivalents		8	13
Accounts receivable (less reserve:)
Customer		154	144
Other		6	12
Unbilled revenues		87	91
Fuel, materials and supplies		121	124
Prepayments		15	15
Regulatory Assets, Current		14	9
Other current assets		0	2
Total Current Assets		405	410
Property, Plant and Equipment
Regulated utility plant		9,272	9,219
Less:  accumulated depreciation - regulated utility plant		1,995	1,929
Regulated utility plant, net		7,277	7,290
Construction work in progress		409	378
Property, Plant and Equipment, net		7,686	7,668
Other Noncurrent Assets
Regulatory assets		415	411
Goodwill		607	607
Other intangibles		22	23
Other noncurrent assets		158	153
Assets, Noncurrent		1,202	1,194
Total Assets		9,293	9,272
Current Liabilities
Short-term debt		285	0
Notes Payable, Related Parties, Current		4	294
Accounts payable		91	108
Accounts payable to affiliates		52	64
Taxes		39	19
Interest		44	18
Current Customer Deposits		33	32
Regulatory liabilities		7	8
Asset Retirement Obligation, Current		20	22
Other current liabilities		42	47
Liabilities, Current, Total		617	612
Long-term Debt, Unclassified [Abstract]
Long-term Debt		2,619	2,618
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes		870	865
Investment tax credits		86	87
Asset retirement obligations		82	83
Regulatory liabilities		1,042	1,045
Other deferred credits and noncurrent liabilities		32	34
Total Deferred Credits and Other Noncurrent Liabilities		2,112	2,114
Commitments and Contingent Liabilities
Equity
Common stock	[4]	308	308
Additional paid-in capital		2,957	2,957
Earnings reinvested		680	663
Total Equity		3,945	3,928
Total Liabilities and Equity		$ 9,293	$ 9,272

[1] 1,560,000 shares authorized, 770,013 shares issued and 735,765 shares outstanding at March 31, 2022. 1,560,000 shares authorized, 769,890 shares issued and 735,112 shares outstanding at December 31, 2021.

[2] 170,000 shares authorized; 66,368 shares issued and outstanding at March 31, 2022 and December 31, 2021.

[3] 75,000 shares authorized; 21,294 shares issued and outstanding at March 31, 2022 and December 31, 2021.

[4] 80,000 shares authorized; 37,818 shares issued and outstanding at March 31, 2022 and December 31, 2021.