Pension, Other Postretirement Benefits and Savings Plans - Selected Pension Plan Information (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
UNITED STATES
All plans:
Accumulated benefit obligation	$ 3,650	$ 4,077
Plans not fully-funded:
Projected benefit obligation	292	275
Accumulated benefit obligation	283	267
Fair value of plan assets	203	202
Foreign Plan [Member]
All plans:
Accumulated benefit obligation	2,330	2,167
Plans not fully-funded:
Projected benefit obligation	905	799
Accumulated benefit obligation	858	752
Fair value of plan assets	$ 445	$ 360

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.

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