Utility Rate Regulation - Regulatory Matters (Details) - USD ($) $ in Millions	3 Months Ended		7 Months Ended	11 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2020	Nov. 30, 2021
PPL Electric [Member] | Period of 05-21-2020 to 12-31-2020
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract]
Regulatory Liability due to ROE Reserve, After Tax		$ 19	$ 13
Amortization of Revenue Reserve for ROE Challenge	$ 44
PPL Electric Utilities Corp [Member]
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract]
Amortization of Revenue Reserve for ROE Challenge	44
PPL Electric Utilities Corp [Member] | Period of 05-21-2020 to 12-31-2020
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract]
Regulatory Liability due to ROE Reserve, After Tax		$ 19	$ 13
Regulatory Liability due to ROE Reserve, Before Tax				$ 73
Amortization of Revenue Reserve for ROE Challenge	$ 44
PPL Electric Utilities Corp [Member] | PPL Electric [Member] | Period of 05-21-2020 to 12-31-2020
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract]
Regulatory Liability due to ROE Reserve, Before Tax				$ 73