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PENSION AND POSTRETIREMENT BENEFITS - Schedule of Contributions for Plans That Are Not Individually Significant (Details) - USD ($) $ in Millions | 12 Months Ended
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May 27, 2018 | May 28, 2017 | May 29, 2016
Multiemployer Plans [Line Items] |  |  |
Total Contributions | $ 6.5 | $ 8.0 | $ 11.1
Bakery and Confectionary Union and Industry International Pension Plan |  |  |
Multiemployer Plans [Line Items] |  |  |
Total Contributions | 1.5 | 1.8 | 3.1
Central States, Southeast and Southwest Areas Pension Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
Total Contributions | 1.8 | 1.8 | 1.9
Western Conference of Teamsters Pension Plan |  |  |
Multiemployer Plans [Line Items] |  |  |
Total Contributions | 2.8 | 4.0 | 5.4
Other Plans |  |  |
Multiemployer Plans [Line Items] |  |  |
Total Contributions | $ 0.4 | $ 0.4 | $ 0.7

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of contributions made to multiemployer plan by all employers who participate in plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 7 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450678-114947 + Details
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