Defined Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding			$ 9	$ 10
Pension Plan [Member] | U.S.
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 8	$ 9	23	26
Interest cost	46	45	138	137
Expected return on plan assets	(72)	(74)	(215)	(224)
Amortization of: [Abstract]
Prior service cost	0	1	0	2
Actuarial loss	4	3	13	8
Net periodic defined benefit costs (credits)	(14)	(16)	(41)	(51)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	2	2	5	5
Interest cost	8	8	23	22
Expected return on plan assets	(7)	(8)	(22)	(23)
Amortization of: [Abstract]
Prior service cost	0	0	1	1
Actuarial loss	(1)	(1)	(3)	(4)
Net periodic defined benefit costs (credits)	$ 2	$ 1	4	1
PPL Electric Utilities Corp [Member]
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding			$ 0	$ 2