Pension and Other Postretirement Employee Benefit Plans (Funded Status of Pension and Postretirement Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Pension Benefits
Change in plan assets:
Fair value of plan assets at beginning of year	$ 2,693
Fair value of plan assets at end of year	2,881	$ 2,693
Pension Benefits | U.S. Pension Benefits
Change in pension benefit obligation:
Benefit obligation at beginning of year	(1,703)	(1,858)
Service cost	0	0
Interest cost	(85)	(90)
Employee/retiree contributions	0	0
Benefits and other expenses paid	155	152
Actuarial gain (loss)	(35)	47
Amendments, settlements and curtailments	0	46
Foreign exchange rate impact and other	0	0
Benefit obligation at end of year	(1,668)	(1,703)
Change in plan assets:
Fair value of plan assets at beginning of year	1,914	1,889
Actual return on plan assets	252	214
Employer contributions	9	8
Employee/retiree contributions	0	0
Amendments and settlements	0	(45)
Benefits and other expenses paid	(155)	(152)
Foreign exchange rate impact and other	0	0
Fair value of plan assets at end of year	2,020	1,914
Funded status	352	211
Pension Benefits | Foreign Plan
Change in pension benefit obligation:
Benefit obligation at beginning of year	(1,303)	(1,349)
Service cost	(34)	(32)
Interest cost	(47)	(45)
Employee/retiree contributions	(10)	(8)
Benefits and other expenses paid	57	50
Actuarial gain (loss)	51	29
Amendments, settlements and curtailments	11	16
Foreign exchange rate impact and other	(165)	36
Benefit obligation at end of year	(1,440)	(1,303)
Change in plan assets:
Fair value of plan assets at beginning of year	779	815
Actual return on plan assets	24	(14)
Employer contributions	41	37
Employee/retiree contributions	10	8
Amendments and settlements	(10)	(13)
Benefits and other expenses paid	(57)	(50)
Foreign exchange rate impact and other	74	(4)
Fair value of plan assets at end of year	861	779
Funded status	(579)	(524)
Postretirement Benefits
Change in pension benefit obligation:
Benefit obligation at beginning of year	(92)	(98)
Service cost	0	0
Interest cost	(4)	(4)
Employee/retiree contributions	(1)	(2)
Benefits and other expenses paid	12	12
Actuarial gain (loss)	(4)	0
Amendments, settlements and curtailments	0	0
Foreign exchange rate impact and other	(1)	0
Benefit obligation at end of year	(90)	(92)
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	11	11
Employee/retiree contributions	1	1
Amendments and settlements	0	0
Benefits and other expenses paid	(12)	(12)
Foreign exchange rate impact and other	0	0
Fair value of plan assets at end of year	0	0
Funded status	$ (90)	$ (92)