Employee Benefit Obligations - Fair Value of Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension assets at fair value
Total assets.	$ 1,656	$ 1,935
Defined Benefit Pension Plans
Pension assets at fair value
Total assets.	2,811	3,155	$ 3,099
U.S. | Defined Benefit Pension Plans
Pension assets at fair value
Total assets.	1,051	1,106	1,111
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2
Pension assets at fair value
Total assets.	518	536
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Cash and cash equivalents
Pension assets at fair value
Total assets.	38	20
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Municipal Bonds
Pension assets at fair value
Total assets.	8	10
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | US Treasury Bond Securities
Pension assets at fair value
Total assets.	138	173
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | U.S. government and agency securities-Other
Pension assets at fair value
Total assets.	9	11
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Non-U.S. government bonds
Pension assets at fair value
Total assets.	15	13
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Basic materials
Pension assets at fair value
Total assets.	6	6
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Communications
Pension assets at fair value
Total assets.	40	44
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Consumer discretionary
Pension assets at fair value
Total assets.	19	18
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Consumer staples
Pension assets at fair value
Total assets.	57	59
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Energy
Pension assets at fair value
Total assets.	41	37
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Financials
Pension assets at fair value
Total assets.	50	44
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Industrials
Pension assets at fair value
Total assets.	32	39
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Information technology
Pension assets at fair value
Total assets.	6	6
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Private placement
Pension assets at fair value
Total assets.	1	1
U.S. | Defined Benefit Pension Plans | Fair Value Inputs Level 1 And Level 2 | Corporate bonds and notes-Utilities
Pension assets at fair value
Total assets.	58	55
U.S. | Defined Benefit Pension Plans | Level 1
Pension assets at fair value
Total assets.	138	173
U.S. | Defined Benefit Pension Plans | Level 1 | US Treasury Bond Securities
Pension assets at fair value
Total assets.	138	173
U.S. | Defined Benefit Pension Plans | Level 2
Pension assets at fair value
Total assets.	380	363
U.S. | Defined Benefit Pension Plans | Level 2 | Cash and cash equivalents
Pension assets at fair value
Total assets.	38	20
U.S. | Defined Benefit Pension Plans | Level 2 | Municipal Bonds
Pension assets at fair value
Total assets.	8	10
U.S. | Defined Benefit Pension Plans | Level 2 | U.S. government and agency securities-Other
Pension assets at fair value
Total assets.	9	11
U.S. | Defined Benefit Pension Plans | Level 2 | Non-U.S. government bonds
Pension assets at fair value
Total assets.	15	13
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Basic materials
Pension assets at fair value
Total assets.	6	6
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Communications
Pension assets at fair value
Total assets.	40	44
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Consumer discretionary
Pension assets at fair value
Total assets.	19	18
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Consumer staples
Pension assets at fair value
Total assets.	57	59
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Energy
Pension assets at fair value
Total assets.	41	37
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Financials
Pension assets at fair value
Total assets.	50	44
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Industrials
Pension assets at fair value
Total assets.	32	39
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Information technology
Pension assets at fair value
Total assets.	6	6
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Private placement
Pension assets at fair value
Total assets.	1	1
U.S. | Defined Benefit Pension Plans | Level 2 | Corporate bonds and notes-Utilities
Pension assets at fair value
Total assets.	58	55
U.S. | Defined Benefit Pension Plans | Net Asset Value Per Share
Pension assets at fair value
Total assets.	533	570
Non-U.S. | Defined Benefit Pension Plans
Pension assets at fair value
Total assets.	1,760	2,049	$ 1,988
UNITED KINGDOM | Defined Benefit Pension Plans
Pension assets at fair value
Total assets.	1,693	1,990
UNITED KINGDOM | Defined Benefit Pension Plans | Insurance annuity contract
Pension assets at fair value
Annuity buy-in contract	1,660	1,940
UNITED KINGDOM | Defined Benefit Pension Plans | Level 1
Pension assets at fair value
Total assets.	37	55
UNITED KINGDOM | Defined Benefit Pension Plans | Level 1 | Cash and cash equivalents
Pension assets at fair value
Total assets.		31
UNITED KINGDOM | Defined Benefit Pension Plans | Level 1 | Equity commingled funds
Pension assets at fair value
Total assets.	37	20
UNITED KINGDOM | Defined Benefit Pension Plans | Level 1 | Other
Pension assets at fair value
Total assets.		4
UNITED KINGDOM | Defined Benefit Pension Plans | Level 3 | Insurance annuity contract
Pension assets at fair value
Total assets.	$ 1,656	$ 1,935