Defined Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding	$ 3	$ 3
Pension Plan [Member] | U.S.
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	9	12
Interest cost	46	32
Expected return on plan assets	(78)	(64)
Amortization of: [Abstract]
Prior service cost	2	2
Actuarial loss	0	12
Net periodic defined benefit costs (credits)	(21)	(6)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	2	1
Interest cost	7	4
Expected return on plan assets	(8)	(6)
Amortization of: [Abstract]
Actuarial loss	(1)	0
Net periodic defined benefit costs (credits)	0	(1)
PPL Electric Utilities Corp [Member]
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding	$ 1	$ 0