Defined Benefits (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding			$ 7	$ 7
Pension Plan [Member] | U.S.
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 8	$ 13	17	25
Interest cost	48	30	94	62
Expected return on plan assets	(77)	(63)	(155)	(127)
Amortization of: [Abstract]
Prior service cost	1	2	3	4
Actuarial loss	1	17	1	29
Net Periodic Defined Benefit Costs (Credits) Prior To Settlements	(19)	(1)	(40)	(7)
Settlements	0	12	0	12
Net periodic defined benefit costs (credits)	(19)	11	(40)	5
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	1	2	3	3
Interest cost	8	4	15	8
Expected return on plan assets	(7)	(6)	(15)	(12)
Amortization of: [Abstract]
Prior service cost	1	1	1	1
Actuarial loss	(2)	(2)	(3)	(2)
Net periodic defined benefit costs (credits)	$ 1	$ (1)	1	(2)
PPL Electric Utilities Corp [Member]
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding			1	0
Louisville Gas And Electric Co [Member]
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding			0	2
Kentucky Utilities Co [Member]
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding			$ 0	$ 1