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COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES Loss Contingencies (Details)
$ in Millions
12 Months Ended 27 Months Ended
Jun. 24, 2020
USD ($)
LegalMatter
Jun. 26, 2019
USD ($)
Jun. 24, 2020
USD ($)
LegalMatter
Loss Contingencies [Line Items]      
Number of matters pending or threatened which are expected to have a material adverse effect | LegalMatter 0   0
Cyber security incident [Member]      
Loss Contingencies [Line Items]      
Cyber insurance coverage deductible $ 2.0    
Cyber security incident charges     $ 8.0
Insurance recoveries 1.9    
Receivable due from insurance 3.6   3.6
Cyber security incident charges recorded in period 0.1 $ 0.4  
Loss contingency, estimate of possible loss $ 5.0   $ 5.0