Pensions Benefit Plans and Other Postretirement Benefits - Changes in the Benefit Obligation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Benefit Plans.
Change in benefit obligations:
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net
Pension Benefit Plans. | U.S.
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	$ 866	$ 860
Change in benefit obligations:
Service cost	6	6	$ 13
Interest cost	43	45	35
Actuarial (gain) loss	(45)	23
Benefit payments	(78)	(70)
Other		2
Net change in benefit obligations	(73)	6
Obligations at end of year	793	866	860
Pension Benefit Plans. | Non-U.S.
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	727	669
Change in benefit obligations:
Service cost	9	8	10
Interest cost	35	38	24
Actuarial (gain) loss	(56)	25
Settlements	(15)	(31)
Curtailments	(2)	13
Benefit payments	(41)	(41)
Other		1
Foreign currency translation	(42)	45
Net change in benefit obligations	(112)	58
Obligations at end of year	615	$ 727	$ 669
Other Postretirement Benefits Plan
Change in benefit obligations:
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Other Operating Income (Expense), Net	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net
Other Postretirement Benefits Plan | U.S.
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	21	$ 22
Change in benefit obligations:
Interest cost	1	1	$ 1
Actuarial (gain) loss	(1)
Benefit payments	(2)	(2)
Net change in benefit obligations	(2)	(1)
Obligations at end of year	19	21	22
Other Postretirement Benefits Plan | Non-U.S.
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	50	45
Change in benefit obligations:
Service cost	1	1	2
Interest cost	2	2	2
Actuarial (gain) loss	(1)	3
Benefit payments	(2)	(2)
Foreign currency translation	(4)	1
Net change in benefit obligations	(4)	5
Obligations at end of year	$ 46	$ 50	$ 45