Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Utility Revenue (Details) [Abstract]
Operating Revenues	$ 8,462	$ 8,312	$ 7,902
Restricted Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	306	331
Total Cash, Cash Equivalents and Restricted Cash	339	382	357	$ 3,572
Property, Plant and Equipment (Numeric) [Abstract]
Interest costs, capitalized during the period	$ 20	12	$ 7
Discount Rate Change For United Kingdom Pension Plans Numeric [Abstract]
Percentage in excess of gains and losses equal to the plan's projected benefit obligation to use accelerated amortization	30.00%
Minimum percentage of gains and losses under the accelerated method that are amortized on a straight line basis	10.00%
Maximum percentage of gains and losses under the accelerated that are amortized on a straight line basis	30.00%
Income Taxes [Abstract]
Minimum percentage to be attained of likelihood of uncertain tax position being realized	50.00%
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	$ 511	505
Balance Sheet Classification of Deferred Taxes [Abstract]
Goodwill	2,247	2,247
Fuel [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	153	144
Natural Gas Stored Underground [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	49	58
Material And Supplies [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	$ 309	$ 303
Regulated Operations [Member] | Utility Plant [Member]
Depreciation (Details) [Abstract]
Weighted-average rates	3.20%	3.26%	3.21%
Allowance For Doubtful Accounts [Member]
Allowance for Doubtful Accounts (Details) [Roll Forward]
Balance at beginning of period	$ 130	$ 95	$ 69
Additions charged to income	109	87	78
Deductions	85	52	52
Balance at end of period	154	130	95
PPL Electric Utilities Corp [Member]
Utility Revenue (Details) [Abstract]
Operating Revenues	2,876	3,008	3,030
Restricted Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	24	51
Total Cash, Cash Equivalents and Restricted Cash	24	51	25	21
Property, Plant and Equipment (Numeric) [Abstract]
Interest costs, capitalized during the period	9	7	$ 5
Income Taxes [Abstract]
Intercompany tax receivables (payables)	(2)	(21)
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	104	99
PPL Electric Utilities Corp [Member] | Fuel [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	0	0
PPL Electric Utilities Corp [Member] | Natural Gas Stored Underground [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	0	0
PPL Electric Utilities Corp [Member] | Material And Supplies [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	$ 104	$ 99
PPL Electric Utilities Corp [Member] | Regulated Operations [Member] | Utility Plant [Member]
Depreciation (Details) [Abstract]
Weighted-average rates	2.52%	2.62%	2.75%
PPL Electric Utilities Corp [Member] | Allowance For Doubtful Accounts [Member]
Allowance for Doubtful Accounts (Details) [Roll Forward]
Balance at beginning of period	$ 50	$ 33	$ 35
Additions charged to income	56	52	27
Deductions	65	35	29
Balance at end of period	41	50	33
Louisville Gas And Electric Co [Member]
Utility Revenue (Details) [Abstract]
Operating Revenues	1,648	1,613	1,798
Restricted Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	8	18
Total Cash, Cash Equivalents and Restricted Cash	24	44	$ 93	9
Income Taxes [Abstract]
Intercompany tax receivables (payables)	(2)	(5)
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	157	143
Balance Sheet Classification of Deferred Taxes [Abstract]
Goodwill	389	389
Louisville Gas And Electric Co [Member] | Fuel [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	64	50
Louisville Gas And Electric Co [Member] | Natural Gas Stored Underground [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	29	34
Louisville Gas And Electric Co [Member] | Material And Supplies [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	$ 64	$ 59
Louisville Gas And Electric Co [Member] | Regulated Operations [Member] | Utility Plant [Member]
Depreciation (Details) [Abstract]
Weighted-average rates	4.02%	4.00%	4.16%
Louisville Gas And Electric Co [Member] | Allowance For Doubtful Accounts [Member]
Allowance for Doubtful Accounts (Details) [Roll Forward]
Balance at beginning of period	$ 6	$ 4	$ 3
Additions charged to income	4	4	6
Deductions	7	2	5
Balance at end of period	3	6	4
Kentucky Utilities Co [Member]
Utility Revenue (Details) [Abstract]
Operating Revenues	1,964	1,884	2,074
Restricted Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	13	14
Total Cash, Cash Equivalents and Restricted Cash	29	38	$ 21	$ 13
Income Taxes [Abstract]
Intercompany tax receivables (payables)	(5)	(3)
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	173	185
Balance Sheet Classification of Deferred Taxes [Abstract]
Goodwill	607	607
Kentucky Utilities Co [Member] | Fuel [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	89	94
Kentucky Utilities Co [Member] | Natural Gas Stored Underground [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	0	0
Kentucky Utilities Co [Member] | Material And Supplies [Member]
Fuel, Materials and Supplies (Details) [Abstract]
Fuel, materials and supplies on the Balance Sheet	$ 84	$ 91
Kentucky Utilities Co [Member] | Regulated Operations [Member] | Utility Plant [Member]
Depreciation (Details) [Abstract]
Weighted-average rates	3.86%	3.95%	4.01%
Kentucky Utilities Co [Member] | Allowance For Doubtful Accounts [Member]
Allowance for Doubtful Accounts (Details) [Roll Forward]
Balance at beginning of period	$ 2	$ 3	$ 3
Additions charged to income	4	3	6
Deductions	4	4	6
Balance at end of period	2	2	3
Louisville Gas and Electric [Member]
Property, Plant and Equipment (Numeric) [Abstract]
Interest costs, capitalized during the period	3	1	0
Kentucky Utilities [Member]
Property, Plant and Equipment (Numeric) [Abstract]
Interest costs, capitalized during the period	$ 4	$ 1	$ 0