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Commitments and Contingencies - Product Warranties (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Product Warranties    
Warranty Term for most products 3 years  
Changes in warranty reserve    
Balance as of beginning of period $ 8.7 $ 8.2
Provision for warranty 3.1 4.0
Utilization of reserve (3.4) (5.2)
Adjustments related to pre-existing warranties (including changes in estimates) 1.0 1.7
Balance as of end of period $ 9.4 $ 8.7