Postretirement Benefit Plans - Expense Related to Defined Benefit and Retiree Health Care Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 8	$ 15	$ 21
Interest cost	28	29	30
Expected return on plan assets	(23)	(27)	(31)
Amortization of prior service cost (credit)	0	0	0
Recognized net actuarial losses (gains)	6	3	15
Net periodic benefit costs (credits)	19	20	35
Settlement losses	7	64	13
Total, including other postretirement losses (gains)	26	84	48
U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	3	3
Interest cost	15	11	10
Expected return on plan assets	(19)	(12)	(9)
Amortization of prior service cost (credit)	0	(2)	(2)
Recognized net actuarial losses (gains)	(5)	0	0
Net periodic benefit costs (credits)	(7)	0	2
Settlement losses	0	0	0
Total, including other postretirement losses (gains)	(7)	0	2
Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	16	25	36
Interest cost	57	33	37
Expected return on plan assets	(63)	(66)	(81)
Amortization of prior service cost (credit)	1	1	1
Recognized net actuarial losses (gains)	12	1	7
Net periodic benefit costs (credits)	23	(6)	0
Settlement losses	0	10	2
Total, including other postretirement losses (gains)	$ 23	$ 4	$ 2