Note 17 - Pension and Postretirement Benefits - Schedule of Contributions for Plans That Are Not Individually Significant (Details) - USD ($) $ in Millions	12 Months Ended
May 29, 2022	May 30, 2021	May 31, 2020
Total Contributions	$ 8.1	$ 7.4	$ 6.5
Central States Southeast and Southwest Areas Pension Fund [Member]
Total Contributions	2.5	2.2	2.0
Western Conference Of Teamsters Pension Plan [Member]
Total Contributions	3.8	3.8	3.2
Retirement Plan Name, Other [Member]
Total Contributions	$ 1.8	$ 1.4	$ 1.3

Amount of contribution received by multiemployer pension plan from all employers participating in multiemployer pension plan determined to be individually significant.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 7
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450678-114947

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 55
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948

Name:	us-gaap_MultiemployerPlanPensionSignificantPlanContribution
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration