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Retirement Plans - Schedule of Retirement Plan Costs (Details) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2022 | May 31, 2021 | May 31, 2020
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract] |  |  |
Defined benefit pension plans | $ (2) | $ 88 | $ 148
Defined contribution plans | 824 | 685 | 574
Postretirement healthcare plans | 89 | 83 | 86
Retirement plans MTM loss (gain) | 1,578 | (1,176) | 794
Retirement plans costs | $ 2,489 | $ (320) | $ 1,602

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- Definition The total amount of net periodic benefit cost for pension plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments. + References No definition available. + Details
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- Definition The total amount of net periodic benefit cost for defined benefit postretirement healthcare plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments. + References No definition available. + Details
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- Definition The annual retirement plan amount recorded for actuarial gains and losses calculated using actual fair value of plan assets. + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Amount of cost (reversal of cost) for pension and other postretirement benefits. + References No definition available. + Details
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- References No definition available. + Details
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