Postretirement Benefit Plans - Plan Assets by Level Three Hierarchy (Details) - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 400	$ 418	$ 421
U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		248	264	280
Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,708	1,866	$ 1,822
Other | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	257	418
Other | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	246	260
Other | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	1,190	1,707
Level 1 | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		92	0
Level 1 | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2	4
Level 1 | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		42	106
Level 2 | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		51	0
Level 2 | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Level 2 | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		476	53
Fixed income securities and cash equivalents | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		244	272
Fixed income securities and cash equivalents | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		198	210
Fixed income securities and cash equivalents | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,310	1,444
Fixed income securities and cash equivalents | Other | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	101	272
Fixed income securities and cash equivalents | Other | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	196	206
Fixed income securities and cash equivalents | Other | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	820	1,343
Fixed income securities and cash equivalents | Level 1 | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		92	0
Fixed income securities and cash equivalents | Level 1 | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2	4
Fixed income securities and cash equivalents | Level 1 | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		15	49
Fixed income securities and cash equivalents | Level 2 | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		51	0
Fixed income securities and cash equivalents | Level 2 | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Fixed income securities and cash equivalents | Level 2 | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		475	52
Equity securities | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		156	146
Equity securities | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		50	54
Equity securities | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		398	422
Equity securities | Other | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	156	146
Equity securities | Other | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	50	54
Equity securities | Other | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	370	364
Equity securities | Level 1 | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Equity securities | Level 1 | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Equity securities | Level 1 | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		27	57
Equity securities | Level 2 | U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Equity securities | Level 2 | U.S. | Retiree Health Care
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Equity securities | Level 2 | Non-U.S. | Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 1	$ 1

[1] Consists of bond index and equity index funds, measured at net asset value per share, as well as cash equivalents.