Pension - Net Pension Cost (Details) - Pension Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 1	$ 1	$ 2
Interest cost	194	204	140
Expected long-term return on plan assets	(247)	(204)	(272)
Amortization of:
Prior actuarial losses, net	39	52	89
Curtailment loss	1	0	0
Net (benefit) cost	$ (12)	$ 53	$ (41)