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Postretirement Benefit Plans - Amounts Recognized on our Balance Sheet (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Overfunded retirement plans | $ 173 | $ 188
Accrued expenses and other liabilities & other long-term liabilities | (12) | (9)
Underfunded retirement plans | (108) | (118)
Funded status at end of year | 53 | 61
U.S. | Defined Benefit |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Overfunded retirement plans | 0 | 0
Accrued expenses and other liabilities & other long-term liabilities | (5) | (3)
Underfunded retirement plans | (82) | (97)
Funded status at end of year | (87) | (100)
U.S. | Retiree Health Care |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Overfunded retirement plans | 8 | 8
Accrued expenses and other liabilities & other long-term liabilities | 0 | 0
Underfunded retirement plans | (2) | (2)
Funded status at end of year | 6 | 6
Non-U.S. | Defined Benefit |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Overfunded retirement plans | 165 | 180
Accrued expenses and other liabilities & other long-term liabilities | (7) | (6)
Underfunded retirement plans | (24) | (19)
Funded status at end of year | $ 134 | $ 155

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