Goodwill and Other Intangible Assets (Other Intangibles - Finite-Lived) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Subject to amortization: [Abstract]
Gross carrying amount	$ 579	$ 553
Accumulated amortization	263	250
Contracts [Member]
Subject to amortization: [Abstract]
Gross carrying amount	125	125
Accumulated amortization	116	107
Land Rights And Easements [Member]
Subject to amortization: [Abstract]
Gross carrying amount	432	411
Accumulated amortization	147	143
Licenses And Other [Member]
Subject to amortization: [Abstract]
Gross carrying amount	2	2
Accumulated amortization	0	0
Intangible assets with no regulatory offset [Member]
Subject to amortization: [Abstract]
Amortization expense	5	5	$ 5
Forecasted amortization in 2021	4
Forecasted amortization in 2022	4
Forecasted amortization in 2023	4
Forecasted amortization in 2024	4
Forecasted amortization in 2025	4
Intangible assets with regulatory offset [Member]
Subject to amortization: [Abstract]
Amortization expense	8	9	9
Forecasted amortization in 2021	8
Forecasted amortization in 2022	2
Forecasted amortization in 2023	0
Forecasted amortization in 2024	0
Forecasted amortization in 2025	0
Other Intangibles Excluding Emission Allowances And Or Renewable Energy Credits [Member]
Subject to amortization: [Abstract]
Amortization expense	13	14	14
Forecasted amortization in 2021	12
Forecasted amortization in 2022	6
Forecasted amortization in 2023	4
Forecasted amortization in 2024	4
Forecasted amortization in 2025	4
Renewable energy credit
Subject to amortization: [Abstract]
Gross carrying amount	20	15
Accumulated amortization	0	0
PPL Electric Utilities Corp [Member]
Subject to amortization: [Abstract]
Gross carrying amount	398	391
Accumulated amortization	142	139
PPL Electric Utilities Corp [Member] | Land Rights And Easements [Member]
Subject to amortization: [Abstract]
Gross carrying amount	396	389
Accumulated amortization	141	138
PPL Electric Utilities Corp [Member] | Licenses And Other [Member]
Subject to amortization: [Abstract]
Gross carrying amount	2	2
Accumulated amortization	1	1
PPL Electric Utilities Corp [Member] | Intangible assets with no regulatory offset [Member]
Subject to amortization: [Abstract]
Amortization expense	4	4	4
Forecasted amortization in 2021	4
Forecasted amortization in 2022	4
Forecasted amortization in 2023	4
Forecasted amortization in 2024	4
Forecasted amortization in 2025	4
Louisville Gas And Electric Co [Member]
Subject to amortization: [Abstract]
Gross carrying amount	93	93
Accumulated amortization	81	75
Louisville Gas And Electric Co [Member] | Land Rights And Easements [Member]
Subject to amortization: [Abstract]
Gross carrying amount	7	7
Accumulated amortization	2	2
Louisville Gas And Electric Co [Member] | OVEC power purchase agreement [Member]
Subject to amortization: [Abstract]
Gross carrying amount	86	86
Accumulated amortization	79	73
Louisville Gas And Electric Co [Member] | Intangible assets with regulatory offset [Member]
Subject to amortization: [Abstract]
Amortization expense	6	6	6
Forecasted amortization in 2021	6
Forecasted amortization in 2022	1
Forecasted amortization in 2023	0
Forecasted amortization in 2024	0
Forecasted amortization in 2025	0
Kentucky Utilities Co [Member]
Subject to amortization: [Abstract]
Gross carrying amount	68	56
Accumulated amortization	40	37
Kentucky Utilities Co [Member] | Land Rights And Easements [Member]
Subject to amortization: [Abstract]
Gross carrying amount	29	17
Accumulated amortization	4	4
Kentucky Utilities Co [Member] | OVEC power purchase agreement [Member]
Subject to amortization: [Abstract]
Gross carrying amount	39	39
Accumulated amortization	36	33
Kentucky Utilities Co [Member] | Intangible assets with regulatory offset [Member]
Subject to amortization: [Abstract]
Amortization expense	2	$ 3	$ 3
Forecasted amortization in 2021	2
Forecasted amortization in 2022	1
Forecasted amortization in 2023	0
Forecasted amortization in 2024	0
Forecasted amortization in 2025	$ 0