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Retirement and Postemployment Benefits (Schedule of Components of net periodic benefit (income) expense) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 27, 2022 | Nov. 28, 2021 | Nov. 27, 2022 | Nov. 28, 2021
Defined Benefit Pension Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | $ 17.5 | $ 23.5 | $ 35.1 | $ 47.2
Interest cost | 64.6 | 46.1 | 129.2 | 92.4
Expected return on plan assets | (105.0) | (102.9) | (210.0) | (205.7)
Amortization of losses (gains) | 28.4 | 35.5 | 56.7 | 70.4
Amortization of prior service costs (credits) | 0.3 | 0.2 | 0.7 | 0.4
Other adjustments | 0.0 | 0.0 | 0.0 | 0.0
Curtailment (loss) gain | 0.0 | 0.5 | 0.0 | (14.3)
Net expense (income) | 5.8 | 2.9 | 11.7 | (9.6)
Other Postretirement Benefit Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | 1.2 | 1.9 | 2.6 | 3.8
Interest cost | 4.5 | 3.1 | 9.0 | 6.3
Expected return on plan assets | (7.8) | (6.7) | (15.6) | (13.4)
Amortization of losses (gains) | (4.8) | (2.7) | (9.7) | (5.4)
Amortization of prior service costs (credits) | (5.7) | (5.2) | (11.5) | (10.4)
Other adjustments | 0.0 | 0.0 | 0.0 | 0.0
Curtailment (loss) gain | 0.0 | (0.2) | 0.0 | (5.7)
Net expense (income) | (12.6) | (9.8) | (25.2) | (24.8)
Postemployment Benefit Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | 2.1 | 1.7 | 4.2 | 3.5
Interest cost | 0.8 | 0.3 | 1.6 | 0.7
Expected return on plan assets | 0.0 | 0.0 | 0.0 | 0.0
Amortization of losses (gains) | 0.0 | 0.7 | 0.1 | 1.5
Amortization of prior service costs (credits) | 0.1 | 0.1 | 0.2 | 0.2
Other adjustments | 2.9 | 3.8 | 5.9 | 5.7
Curtailment (loss) gain | 0.0 | 0.0 | 0.0 | 0.0
Net expense (income) | $ 5.9 | $ 6.6 | $ 12.0 | $ 11.6

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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 http://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 http://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 http://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 http://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 http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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