Retirement Plans and Other Retiree Benefits - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Components of net periodic benefit cost
ERISA litigation matter(1)	$ 65	$ 0	$ 267
Other Retiree Benefits
Components of net periodic benefit cost
Service cost	2	2
Interest cost	9	9
Expected return on plan assets	0	0
Amortization of actuarial loss (gain)	(5)	(4)
Net periodic benefit cost	6	7
ERISA litigation matter(1)	0	0
Total pension cost	6	7
United States | Pension Benefits
Components of net periodic benefit cost
Service cost	0	0
Interest cost	24	23
Expected return on plan assets	(18)	(19)
Amortization of actuarial loss (gain)	9	10
Net periodic benefit cost	15	14
ERISA litigation matter(1)	50	0
Total pension cost	65	14
International | Pension Benefits
Components of net periodic benefit cost
Service cost	4	3
Interest cost	8	8
Expected return on plan assets	(7)	(7)
Amortization of actuarial loss (gain)	2	2
Net periodic benefit cost	7	6
ERISA litigation matter(1)	0	0
Total pension cost	$ 7	$ 6