Segment and Related Information (Income Statement and Balance Sheet Data) (Details) $ in Millions		12 Months Ended
		Dec. 31, 2024 USD ($) Integer	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Income Statement Data
Operating Revenues from external customers		$ 8,462	$ 8,312	$ 7,902
Fuel		783	733	931
Energy purchases		1,679	1,841	1,686
Depreciation		1,279	1,254	1,181
Taxes, other than income		374	392	332
Other Income (Expense) - net		(114)	40	(54)
Amortization		78	81	52
Interest Expense, Operating and Nonoperating		738	666	513
Income Before Income Taxes		1,116	924	915
Income Taxes		228	184	201
Deferred income taxes and investment tax credits		196	322	179
Net income (loss)		888	740	756
Cash Flow Data
Expenditures for long-lived assets		2,805	2,390	2,158
Balance Sheet Data
Total Assets		$ 41,069	39,236
Segment Information (Numeric) [Abstract]
Number of reportable segments | Integer		3
PPL Electric Utilities Corp [Member]
Income Statement Data
Operating Revenues from external customers		$ 2,876	3,008	3,030
Energy purchases		721	992	1,048
Depreciation		401	397	393
Taxes, other than income		131	143	149
Other Income (Expense) - net		(45)	(39)	(30)
Amortization		45	41	22
Interest Expense, Operating and Nonoperating		246	223	171
Income Before Income Taxes		750	687	699
Income Taxes		176	168	174
Deferred income taxes and investment tax credits		129	46	91
Net income (loss)	[1]	574	519	525
Balance Sheet Data
Total Assets		$ 15,475	14,294
Segment Information (Numeric) [Abstract]
Number of operating segments | Integer		2
Number of reportable segments | Integer		1
LOUISVILLE GAS And ELECTRIC CO [Member]
Income Statement Data
Operating Revenues from external customers		$ 1,648	1,613	1,798
Fuel		308	286	346
Energy purchases		151	168	245
Depreciation		305	302	298
Taxes, other than income		49	48	48
Other Income (Expense) - net		(12)	(3)	(4)
Amortization		16	14	5
Interest Expense, Operating and Nonoperating		105	102	89
Income Before Income Taxes		374	335	335
Income Taxes		77	69	63
Deferred income taxes and investment tax credits		6	(14)	(6)
Net income (loss)	[2]	297	266	272
Balance Sheet Data
Total Assets		$ 7,992	7,753
Segment Information (Numeric) [Abstract]
Number of operating segments | Integer		1
Number of reportable segments | Integer		1
Kentucky Utilities Co [Member]
Income Statement Data
Operating Revenues from external customers		$ 1,964	1,884	2,074
Fuel		476	447	585
Energy purchases		25	24	28
Depreciation		403	392	386
Taxes, other than income		49	45	45
Other Income (Expense) - net		(15)	(8)	(8)
Amortization		21	20	18
Income Before Income Taxes		445	389	398
Income Taxes		89	77	76
Deferred income taxes and investment tax credits		(15)	(10)	2
Net income (loss)	[3]	356	312	322
Balance Sheet Data
Total Assets		$ 10,073	9,714
Segment Information (Numeric) [Abstract]
Number of operating segments | Integer		1
Number of reportable segments | Integer		1
Total Segments
Income Statement Data
Operating Revenues from external customers		$ 8,462	8,311	7,879
Fuel		783	733	931
Energy purchases		1,679	1,842	1,686
Operation and maintenance		2,239	2,136	2,095
Depreciation		1,276	1,249	1,170
Taxes, other than income		374	392	333
Other Income (Expense) - net		(131)	(70)	(70)
Amortization		70	75	47
Interest Expense, Operating and Nonoperating		(581)	(541)	(415)
Income Taxes		(358)	(321)	(289)
Deferred income taxes and investment tax credits		169	77	136
Net income (loss)		(1,303)	(1,167)	(1,030)
Cash Flow Data
Expenditures for long-lived assets		2,812	2,360	2,074
Rhode Island Regulated
Income Statement Data
Operating Revenues from external customers		2,024	1,851	1,038
Fuel		0	0	0
Energy purchases		782	658	365
Operation and maintenance		731	705	531
Depreciation		165	156	92
Taxes, other than income		144	156	92
Other Income (Expense) - net		(24)	(19)	(23)
Amortization		1	1	2
Interest Expense, Operating and Nonoperating		(95)	(83)	(39)
Income Taxes		(22)	(16)	14
Deferred income taxes and investment tax credits		38	48	39
Net income (loss)		(109)	(96)	44
Cash Flow Data
Expenditures for long-lived assets		495	454	268
Balance Sheet Data
Total Assets		7,055	6,515
Kentucky Regulated [Member]
Income Statement Data
Operating Revenues from external customers		3,562	3,452	3,811
Fuel		783	733	931
Energy purchases		176	192	273
Operation and maintenance		803	826	959
Depreciation		710	696	685
Taxes, other than income		99	93	92
Other Income (Expense) - net		(29)	(12)	(12)
Amortization		24	33	23
Interest Expense, Operating and Nonoperating		(240)	(235)	(205)
Income Taxes		(160)	(137)	(129)
Deferred income taxes and investment tax credits		2	(17)	6
Net income (loss)		(620)	(552)	(549)
Cash Flow Data
Expenditures for long-lived assets		1,088	950	917
Balance Sheet Data
Total Assets		17,626	17,029
Pennsylvania Regulated [Member]
Income Statement Data
Operating Revenues from external customers		2,876	3,008	3,030
Fuel		0	0	0
Energy purchases		721	992	1,048
Operation and maintenance		705	605	605
Depreciation		401	397	393
Taxes, other than income		131	143	149
Other Income (Expense) - net		(78)	(39)	(35)
Amortization		45	41	22
Interest Expense, Operating and Nonoperating		(246)	(223)	(171)
Income Taxes		(176)	(168)	(174)
Deferred income taxes and investment tax credits		129	46	91
Net income (loss)		(574)	(519)	(525)
Cash Flow Data
Expenditures for long-lived assets		1,229	956	889
Balance Sheet Data
Total Assets		15,475	14,294
Corporate And Other [Member]
Income Statement Data
Operating Revenues from external customers		0	1	23
Amortization		8	6	5
Deferred income taxes and investment tax credits		27	245	43
Net income (loss)		415	427	316
Cash Flow Data
Expenditures for long-lived assets		(7)	30	$ 84
Balance Sheet Data
Total Assets		$ 913	$ 1,398

[1] Net income equals comprehensive income.

[2] Net income equals comprehensive income.

[3] Net income equals comprehensive income.