Employee Postretirement Benefits (Summarized Financial Information about Postretirement plans, Excluding Defined Contribution Retirement Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year	$ 2,198	$ 2,428
Service cost	10	11	$ 11
Interest cost	116	114	120
Actuarial (gain) loss(a)	12	(129)
Currency and other	88	(39)
Benefit payments from plans	(177)	(174)
Direct benefit payments	(8)	(8)
Settlements and curtailments	(29)	(5)
Benefit obligation at end of year	2,210	2,198	2,428
Change in Plan Assets
Fair value of plan assets at beginning of year	2,060	2,295
Actual return on plan assets	140	(32)
Employer contributions	14	14
Currency and other	83	(39)
Benefit payments	(177)	(174)
Settlements	(25)	(4)
Fair value of plan assets at end of year	2,095	2,060	2,295
Funded Status	(115)	(138)
Other Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year	497	531
Service cost	4	4	4
Interest cost	29	28	30
Actuarial (gain) loss(a)	(8)	(3)
Currency and other	6	(12)
Benefit payments from plans	0	0
Direct benefit payments	(48)	(51)
Settlements and curtailments	0	0
Benefit obligation at end of year	480	497	531
Change in Plan Assets
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	0	0
Currency and other	0	0
Benefit payments	0	0
Settlements	0	0
Fair value of plan assets at end of year	0	0	$ 0
Funded Status	$ (480)	$ (497)