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Benefit Plans - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 11, 2019 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
U.S. Plans | North America |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Multiemployer plan, withdrawal liability | $ 491 | $ 316 |  | $ 316 |
Multiemployer plan, withdrawal obligation term | 20 years |  |  |  |
Multiemployer plan, accreted interest on the long-term liability |  | 2 | $ 3 | 7 | $ 8
Other current liabilities | U.S. Plans | North America |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Multiemployer plan, withdrawal liability |  | 16 |  | 16 |
Long-term other liabilities | U.S. Plans | North America |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Multiemployer plan, withdrawal liability |  | 300 |  | 300 |
Pension Plans | U.S. Plans |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Employer contributions |  |  |  | 2 |
Estimated future employer contributions over the remainder of 2024 |  | 2 |  | 2 |
Net periodic pension (benefit)/cost |  | (4) | (3) | (12) | (9)
Pension Plans | Non-U.S. Plans |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Employer contributions |  |  |  | 61 |
Estimated future employer contributions over the remainder of 2024 |  | 18 |  | 18 |
Net periodic pension (benefit)/cost |  | (4) | (2) | (16) | (4)
Postretirement Benefit Plans |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Net periodic pension (benefit)/cost |  | (3) | (2) | (8) | (4)
Postemployment Benefit Plans |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Net periodic pension (benefit)/cost |  | $ 5 | $ 2 | $ 16 | $ 3

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