Postretirement Benefit Plans - Benefit Obligations and Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Change in plan assets
Funded status at end of year	$ 186	$ 107
U.S. | Defined Benefit
Change in plan benefit obligation
Benefit obligation at beginning of year:	493	505
Service cost	7	7	$ 8
Interest cost	25	25	28
Participant contributions	0	0
Benefits paid	(14)	(36)
Settlements	(58)	(2)
Actuarial loss (gain)	4	(6)
Plan amendments	0	0
Effects of exchange rate changes	0	0
Benefit obligation at end of year	457	493	505
Change in plan assets
Fair value of plan assets at beginning of year:	400	418
Actual return on plan assets	39	18
Participant contributions	0	0
Benefits paid	(14)	(36)
Settlements	(58)	(2)
Effects of exchange rate changes	0	0
Fair value of plan assets at end of year	381	400	418
Funded status at end of year	(76)	(93)
U.S. | Defined Benefit | Qualified Plan
Change in plan assets
Employer contributions	6	0
U.S. | Defined Benefit | Nonqualified Plan
Change in plan assets
Employer contributions	8	2
U.S. | Retiree Health Care
Change in plan benefit obligation
Benefit obligation at beginning of year:	234	258
Service cost	1	1	2
Interest cost	13	13	15
Participant contributions	14	13
Benefits paid	(42)	(39)
Settlements	0	0
Actuarial loss (gain)	6	(12)
Plan amendments	0	0
Effects of exchange rate changes	0	0
Benefit obligation at end of year	226	234	258
Change in plan assets
Fair value of plan assets at beginning of year:	248	264
Actual return on plan assets	21	9
Participant contributions	14	13
Benefits paid	(42)	(39)
Settlements	0	0
Effects of exchange rate changes	0	0
Fair value of plan assets at end of year	243	248	264
Funded status at end of year	17	14
U.S. | Retiree Health Care | Qualified Plan
Change in plan assets
Employer contributions	2	1
U.S. | Retiree Health Care | Nonqualified Plan
Change in plan assets
Employer contributions	0	0
Non-U.S. | Defined Benefit
Change in plan benefit obligation
Benefit obligation at beginning of year:	1,522	1,732
Service cost	15	16	16
Interest cost	60	55	57
Participant contributions	1	1
Benefits paid	(87)	(83)
Settlements	(8)	(6)
Actuarial loss (gain)	(101)	(106)
Plan amendments	23	0
Effects of exchange rate changes	109	(87)
Benefit obligation at end of year	1,534	1,522	1,732
Change in plan assets
Fair value of plan assets at beginning of year:	1,708	1,866
Actual return on plan assets	43	27
Participant contributions	1	1
Benefits paid	(87)	(83)
Settlements	(8)	(6)
Effects of exchange rate changes	120	(99)
Fair value of plan assets at end of year	1,779	1,708	$ 1,866
Funded status at end of year	245	186
Non-U.S. | Defined Benefit | Qualified Plan
Change in plan assets
Employer contributions	2	2
Non-U.S. | Defined Benefit | Nonqualified Plan
Change in plan assets
Employer contributions	$ 0	$ 0