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Pensions And Other Postretirement Benefits - Accumulated Benefit Obligations and Projected Benefit Obligations (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
U.S.
ABO and PBO [Line Items]
ABO	$ 60,188	$ 66,448
Plans with ABO in Excess of Plan Assets [Abstract]
ABO	8,396	66,448
Fair Value of Plan Assets	6,233	61,077
Plans with PBO in Excess of Plan Assets [Abstract]
PBO	8,415	66,468
Fair Value of Plan Assets	6,223	61,077
Non-U.S.
ABO and PBO [Line Items]
ABO	18,244	20,721
Plans with ABO in Excess of Plan Assets [Abstract]
ABO	6,464	12,042
Fair Value of Plan Assets	300	4,185
Plans with PBO in Excess of Plan Assets [Abstract]
PBO	6,533	12,128
Fair Value of Plan Assets	$ 300	$ 4,186

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of plan asset for defined benefit pension plan with projected benefit obligation in excess of plan assets.

+ 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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