Income and Other Taxes (Tax Reform) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Tax Reform [Line Items]
Income Tax Expense (Benefit)	$ 201	$ 503	$ 314
Net Increase in Regulatory Liability	119	(52)	63
Deferred Tax Liabilities, Net	3,000	3,139
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, U.K. Finance Act 2021, Amount		383
Deferred Tax Assets, Valuation Allowance, Increase due to Loss on Extinguishment of Debt	31	31
PPL Electric Utilities Corp [Member]
Tax Reform [Line Items]
Income Tax Expense (Benefit)	174	154	167
Net Increase in Regulatory Liability	59	(96)	40
Deferred Tax Liabilities, Net	1,514	1,668
Louisville Gas And Electric Co [Member]
Tax Reform [Line Items]
Income Tax Expense (Benefit)	63	54	62
Net Increase in Regulatory Liability	(17)	23	0
Deferred Tax Liabilities, Net	771	751
Kentucky Utilities Co [Member]
Tax Reform [Line Items]
Income Tax Expense (Benefit)	76	67	63
Net Increase in Regulatory Liability	19	22	$ 26
Deferred Tax Liabilities, Net	$ 896	$ 865