Segment and Related Information (Geographic Data) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) Integer	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers | $	$ 8,312	$ 7,902	$ 5,783
Number of reportable segments	3
PPL Electric Utilities Corp [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers | $	$ 3,008	3,030	2,402
Number of reportable segments	1
Number of operating segments	2
LOUISVILLE GAS And ELECTRIC CO [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers | $	$ 1,613	1,798	1,569
Number of reportable segments	1
Number of operating segments	1
Kentucky Utilities Co [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers | $	$ 1,884	$ 2,074	$ 1,826
Number of reportable segments	1
Number of operating segments	1