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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Balances of Allowance for Doubtful Accounts and Changes Therein (Details) - Allowance for doubtful receivables - USD ($) $ in Millions | 12 Months Ended
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May 31, 2020 | May 26, 2019 | May 27, 2018
Movement in Valuation Allowances and Reserves |  |  |
Balance at Beginning of Period | $ 2.2 | $ 1.7 | $ 2.9
Additions Charged to Costs and Expenses | 1.2 | 0.6 | 0.8
Other | 0.1 | 0.5 |
Deductions from Reserves | 0.9 | 0.6 | 2.0
Balance at Close of Period | $ 2.6 | $ 2.2 | $ 1.7

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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