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Note 17 - Pension and Postretirement Benefits - Schedule of Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 29, 2022 | May 30, 2021 | May 31, 2020
Projected benefit obligation | $ 114.9 | $ 135.4 |
Accumulated benefit obligation | 114.9 | 135.4 |
Pension Plan [Member] |  |  |
Service cost | 8.7 | 11.6 | $ 11.5
Interest cost | 83.3 | 86.8 | 118.4
Expected return on plan assets | (145.4) | (140.0) | (170.2)
Amortization of prior service cost (benefit) | 1.9 | 2.3 | 2.7
Recognized net actuarial loss (gain) | (2.9) | 0.8 | 44.8
Settlement gain | 0.0 | 0.0 | (2.1)
Curtailment loss (gain) | 0.0 | 0.2 | 0.8
Total pension and postretirement cost (benefit) | (46.3) | (30.9) | 12.4
Total pension and postretirement cost (benefit) | (46.3) | (30.9) | 12.4
Pension Plan [Member] | Company Plans [Member] |  |  |
Total pension and postretirement cost (benefit) | (54.4) | (38.3) | 5.9
Total pension and postretirement cost (benefit) | (54.4) | (38.3) | 5.9
Pension Plan [Member] | Multi Employer Plans [Member] |  |  |
Total pension and postretirement cost (benefit) | 8.1 | 7.4 | 6.5
Total pension and postretirement cost (benefit) | 8.1 | 7.4 | 6.5
Other Postretirement Benefits Plan [Member] |  |  |
Service cost | 0.2 | 0.2 | 0.1
Interest cost | 1.3 | 1.5 | 2.6
Expected return on plan assets | 0.0 | 0.0 | 0.0
Amortization of prior service cost (benefit) | (2.0) | (2.1) | (2.1)
Recognized net actuarial loss (gain) | (3.5) | (3.5) | (4.6)
Settlement gain | 0.0 | (0.5) | (0.2)
Curtailment loss (gain) | 0.0 | 0.0 | 0.0
Total pension and postretirement cost (benefit) | (4.0) | (4.4) | (4.2)
Total pension and postretirement cost (benefit) | (4.0) | (4.4) | (4.2)
Other Postretirement Benefits Plan [Member] | Company Plans [Member] |  |  |
Total pension and postretirement cost (benefit) | (4.0) | (4.4) | (4.2)
Total pension and postretirement cost (benefit) | (4.0) | (4.4) | (4.2)
Other Postretirement Benefits Plan [Member] | Multi Employer Plans [Member] |  |  |
Total pension and postretirement cost (benefit) | 0.0 | 0.0 | 0.0
Total pension and postretirement cost (benefit) | $ 0.0 | $ 0.0 | $ 0.0

X
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: 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 4: 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 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(5) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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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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- Definition Amount of cost recognized for passage of time related to defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: 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 3: 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 4: 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 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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