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Financial Statement Details - Activity of Allowance for Sales Returns and Other Incentives (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2019
Jun. 24, 2018
Jun. 25, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period $ 42.7    
Balance at end of period 0.0 $ 42.7  
Sales Returns, Discounts and Other Incentives      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 42.7 36.7 $ 36.2
Current period claims 0.0 (145.0) (153.6)
Provision for sales returns, discounts and other incentives 0.0 151.0 154.1
Reclassification to contract liabilities (42.7) 0.0 0.0
Balance at end of period $ 0.0 $ 42.7 $ 36.7