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Retirement Plans - Schedule of Expected Future Benefit Payments (Details) $ in Millions | May 31, 2018 USD ($)
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Pension Plans [Member] | U.S. Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | $ 680
2020 | 781
2021 | 846
2022 | 951
2023 | 1,071
2024-2028 | 7,325
Pension Plans [Member] | International Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | 48
2020 | 48
2021 | 54
2022 | 71
2023 | 79
2024-2028 | 428
Postretirement Healthcare Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2019 | 62
2020 | 65
2021 | 69
2022 | 73
2023 | 76
2024-2028 | $ 369

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- Definition Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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