Pension, Other Postretirement Benefits and Savings Plans - Selected Pension Plan Information (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
UNITED STATES
All plans:
Accumulated benefit obligation	$ 4,077	$ 5,780
Plans not fully-funded:
Projected benefit obligation	275	1,847
Accumulated benefit obligation	267	1,829
Fair value of plan assets	202	1,674
Foreign Plan [Member]
All plans:
Accumulated benefit obligation	2,167	3,385
Plans not fully-funded:
Projected benefit obligation	799	1,273
Accumulated benefit obligation	752	1,216
Fair value of plan assets	$ 360	$ 650

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.

+ References

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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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