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Employee Benefits - Amounts recognized in the Consolidated Statements of Financial Position (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Prepaid pension | $ 652 | $ 1,366
Pension Plan | U.S. |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Prepaid pension | 0 | 0
Accrued benefit liability - current | (42) | (52)
Accrued benefit liability - non-current | (657) | (734)
Accumulated other comprehensive loss | 1,305 | 1,551
Net amount recognized | 606 | 765
Pension Plan | U.K. |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Prepaid pension | 612 | 1,344
Accrued benefit liability - current | (1) | (1)
Accrued benefit liability - non-current | (20) | (16)
Accumulated other comprehensive loss | 1,761 | 1,255
Net amount recognized | 2,352 | 2,582
Pension Plan | Other |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Prepaid pension | 0 | 0
Accrued benefit liability - current | (5) | (5)
Accrued benefit liability - non-current | (57) | (96)
Accumulated other comprehensive loss | 437 | 483
Net amount recognized | $ 375 | $ 382

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