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Retirement Plans - Schedule of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Aug. 31, 2024 | Aug. 31, 2023
Pension Plans [Member] | U.S. Plans [Member] |  |
Net Periodic Benefit Cost |  |
Service cost | $ 125 | $ 136
Interest cost | 361 | 341
Expected return on plan assets | (430) | (400)
Amortization of prior service credit and other | (2) | (2)
Net periodic benefit cost | 54 | 75
Pension Plans [Member] | International Pension Plans [Member] |  |
Net Periodic Benefit Cost |  |
Service cost | 9 | 10
Interest cost | 12 | 10
Expected return on plan assets | (5) | (4)
Amortization of prior service credit and other | 0 | 0
Net periodic benefit cost | 16 | 16
Postretirement Healthcare Plans [Member] |  |
Net Periodic Benefit Cost |  |
Service cost | 7 | 7
Interest cost | 16 | 16
Expected return on plan assets | 0 | 0
Amortization of prior service credit and other | (1) | 0
Net periodic benefit cost | $ 22 | $ 23

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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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-6 + Details
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