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Financial Statement Details - Accounts Receivable, Net (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Jun. 24, 2018
Accounts Receivable, after Allowance for Credit Loss [Abstract]    
Gross receivables $ 129.3 $ 129.9
Allowance for sales returns, discounts and other incentives 0.0 (42.7)
Allowance for bad debts (0.4) (0.8)
Accounts receivable, net 128.9 86.4
Royalties    
Accounts Receivable, after Allowance for Credit Loss [Abstract]    
Gross receivables 2.8 0.0
Billed trade receivables    
Accounts Receivable, after Allowance for Credit Loss [Abstract]    
Gross receivables 125.8 128.9
Unbilled contract receivables    
Accounts Receivable, after Allowance for Credit Loss [Abstract]    
Gross receivables $ 0.7 $ 1.0