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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
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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

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- Definition Amount of plan asset for defined benefit pension plan with projected benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 + Details
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