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Pension and Other Postretirement Benefits (Details 4) - Pension Plans - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
United Kingdom |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 345 | $ 360 | $ 320
United Kingdom | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 14 |  |
United Kingdom | Defined Benefit Plan, Cash [Member] |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 13 |
United Kingdom | Pooled Target Return Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 44 |
United Kingdom | Fixed income: Pooled UK government index-linked securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 54 |
United Kingdom | Fixed income: Pooled fixed income funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 74 |
United Kingdom | Liability-driven investment funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 52 | 68 |
United Kingdom | Pooled UK Government Securities Funds Index-Linked Securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 78 |  |
United Kingdom | Pooled Global Debt Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 124 |  |
United Kingdom | Pooled Diversified Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 31 | 54 |
United Kingdom | Cash and Cash Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 2 |  |
United Kingdom | Pooled Property Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 43 | 47 |
United Kingdom | Receivable From Redemption |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1 | 6 |
United Kingdom | Fair Value, Inputs, Level 1, 2 and 3 | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 301 | 307 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1 | 13 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Cash [Member] |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 13 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Target Return Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Fixed income: Pooled UK government index-linked securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Fixed income: Pooled fixed income funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Liability-driven investment funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled UK Government Securities Funds Index-Linked Securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Global Debt Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Pooled Diversified Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
United Kingdom | Quoted Prices in Active Markets (Level 1) | Cash and Cash Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1 |  |
United Kingdom | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 300 | 294 |
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 14 |  |
United Kingdom | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Cash [Member] |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Target Return Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 44 |
United Kingdom | Significant Other Observable Inputs (Level 2) | Fixed income: Pooled UK government index-linked securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 54 |
United Kingdom | Significant Other Observable Inputs (Level 2) | Fixed income: Pooled fixed income funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 74 |
United Kingdom | Significant Other Observable Inputs (Level 2) | Liability-driven investment funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 52 | 68 |
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled UK Government Securities Funds Index-Linked Securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 78 |  |
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Global Debt Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 124 |  |
United Kingdom | Significant Other Observable Inputs (Level 2) | Pooled Diversified Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 31 | 54 |
United Kingdom | Significant Other Observable Inputs (Level 2) | Cash and Cash Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1 |  |
United Kingdom | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
United Kingdom | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Cash [Member] |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Target Return Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Fixed income: Pooled UK government index-linked securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Fixed income: Pooled fixed income funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Liability-driven investment funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled UK Government Securities Funds Index-Linked Securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Global Debt Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
United Kingdom | Significant Unobservable Inputs (Level 3) | Pooled Diversified Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
United Kingdom | Significant Unobservable Inputs (Level 3) | Cash and Cash Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
United Kingdom | Fair Value Measured at Net Asset Value Per Share |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 344 | 354 |
North America |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 299 | 313 | $ 273
North America | Cash and cash equivalents |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 2 | 1 |
North America | Short-Term Investments |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 3 |
North America | Equity mutual funds: Index equity |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 41 | 35 |
North America | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 16 |
North America | Fixed income: Other |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 10 | 8 |
North America | Fixed income: Government and agency securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 90 | 88 |
North America | Fixed income: Corporate bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 100 | 101 |
North America | Fixed income: U.S.Treasury bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 14 | 17 |
North America | Fixed income mutual funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 42 | 45 |
North America | Accruals and payables—net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
North America | Accruals and payables—net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | (1) |
North America | Fair Value, Inputs, Level 1, 2 and 3 | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 299 | 314 |
North America | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 98 | 64 |
North America | Quoted Prices in Active Markets (Level 1) | Cash and cash equivalents |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1 | 0 |
North America | Quoted Prices in Active Markets (Level 1) | Short-Term Investments |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 1 |
North America | Quoted Prices in Active Markets (Level 1) | Equity mutual funds: Index equity |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 41 | 35 |
North America | Quoted Prices in Active Markets (Level 1) | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: Other |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: Government and agency securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: Corporate bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Quoted Prices in Active Markets (Level 1) | Fixed income: U.S.Treasury bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 14 | 17 |
North America | Quoted Prices in Active Markets (Level 1) | Fixed income mutual funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 42 | 11 |
North America | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 201 | 250 |
North America | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1 | 1 |
North America | Significant Other Observable Inputs (Level 2) | Short-Term Investments |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 2 |
North America | Significant Other Observable Inputs (Level 2) | Equity mutual funds: Index equity |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Other Observable Inputs (Level 2) | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 16 |
North America | Significant Other Observable Inputs (Level 2) | Fixed income: Other |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 10 | 8 |
North America | Significant Other Observable Inputs (Level 2) | Fixed income: Government and agency securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 90 | 88 |
North America | Significant Other Observable Inputs (Level 2) | Fixed income: Corporate bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 100 | 101 |
North America | Significant Other Observable Inputs (Level 2) | Fixed income: U.S.Treasury bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Other Observable Inputs (Level 2) | Fixed income mutual funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 34 |
North America | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Assets Before Receivables, Net |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Unobservable Inputs (Level 3) | Short-Term Investments |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
North America | Significant Unobservable Inputs (Level 3) | Equity mutual funds: Index equity |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Unobservable Inputs (Level 3) | Pooled Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets |  | 0 |
North America | Significant Unobservable Inputs (Level 3) | Fixed income: Other |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Unobservable Inputs (Level 3) | Fixed income: Government and agency securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Unobservable Inputs (Level 3) | Fixed income: Corporate bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Unobservable Inputs (Level 3) | Fixed income: U.S.Treasury bonds and notes |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 | 0 |
North America | Significant Unobservable Inputs (Level 3) | Fixed income mutual funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 0 | $ 0 |

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