Pension and Other Postretirement Employee Benefit Plans (Components of Net Periodic Pension and Postretirement Benefit (Cost)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Pension Benefits | U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0
Interest cost	(85)	(90)
Expected return on plan assets	117	121
Amortization of prior service (cost) credit	(1)	(1)
Amortization of net (loss) gain	(11)	(13)
Curtailment and settlement (losses) gains recognized	0	0
Net periodic pension benefit (cost)	20	17
Pension Benefits | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	(34)	(32)
Interest cost	(47)	(45)
Expected return on plan assets	33	31
Amortization of prior service (cost) credit	1	1
Amortization of net (loss) gain	1	0
Curtailment and settlement (losses) gains recognized	0	(1)
Net periodic pension benefit (cost)	(46)	(46)
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	(4)	(4)
Expected return on plan assets	0	0
Amortization of prior service (cost) credit	2	2
Amortization of net (loss) gain	0	0
Curtailment and settlement (losses) gains recognized	0	0
Net periodic pension benefit (cost)	$ (2)	$ (2)