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Financial Statement Details - Activity of Allowance for Bad Debts (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2019
Jun. 24, 2018
Jun. 25, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Balance at beginning of period $ 0.8    
Balance at end of period 0.4 $ 0.8  
Allowance for Bad Debts      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Balance at beginning of period 0.8 1.6 $ 1.5
Current period provision change (0.3) 0.4 0.1
Write-offs, net of recoveries (0.1) (1.2) 0.0
Balance at end of period $ 0.4 $ 0.8 $ 1.6