Annual report pursuant to Section 13 and 15(d)

COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for Pension Plans With an Accumulated Benefit Obligation in Excess of Plan Assets (Detail)

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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for Pension Plans With an Accumulated Benefit Obligation in Excess of Plan Assets (Detail) - Pension Benefits - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
United States    
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets $ 61,378 $ 65,922
Accumulated benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets 60,769 64,937
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets 55,954 52,997
Projected benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets 61,378 65,922
Accumulated benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets 60,769 64,937
Fair value of plan assets, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets 55,954 52,997
International Pension Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets 798 845
Accumulated benefit obligation, Projected Benefit Obligation Exceeds the Fair Value of the Plan Assets 696 728
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets 503 452
Projected benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets 408 845
Accumulated benefit obligation, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets 357 728
Fair value of plan assets, Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets $ 132 $ 452