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EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost for Pension and Postretirement Benefit Plans (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Defined Benefit Pension Plan | U.S. Pension Benefits |  |  |  |
Net Periodic Cost: |  |  |  |
Service cost | $ 506 | $ 461 | $ 1,012 | $ 1,014
Interest cost | 487 | 481 | 975 | 969
Expected return on assets | (820) | (831) | (1,640) | (1,677)
Amortization of prior service cost | 23 | 34 | 46 | 67
Actuarial (gain) loss |  |  | 0 | (3,290)
Settlement and curtailment (gain) loss |  |  | 0 | 0
Net periodic benefit cost | 196 | 145 | 393 | (2,917)
Defined Benefit Pension Plan | International Pension Benefits |  |  |  |
Net Periodic Cost: |  |  |  |
Service cost | 17 | 19 | 35 | 38
Interest cost | 11 | 10 | 23 | 20
Expected return on assets | (20) | (17) | (40) | (34)
Amortization of prior service cost | 1 | 1 | 1 | 1
Actuarial (gain) loss |  |  | 0 | 0
Settlement and curtailment (gain) loss |  |  | (33) | 0
Net periodic benefit cost | 9 | 13 | (14) | 25
U.S. Postretirement Medical Benefits | U.S. Pension Benefits |  |  |  |
Net Periodic Cost: |  |  |  |
Service cost | 7 | 7 | 15 | 14
Interest cost | 21 | 20 | 41 | 39
Expected return on assets | (1) | (1) | (2) | (3)
Amortization of prior service cost | 0 | 1 | 0 | 3
Actuarial (gain) loss |  |  | 0 | 0
Settlement and curtailment (gain) loss |  |  | 0 | 0
Net periodic benefit cost | $ 27 | $ 27 | $ 54 | $ 53

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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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