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Leases, Commitments and Contingencies - Schedule of Components of Leases (Detail) - USD ($)
$ in Millions
Jun. 27, 2020
Jun. 29, 2019
Leases Commitments And Contingencies [Abstract]    
Operating lease right-of-use assets $ 21.0 $ 27.8
Operating Lease, Liability, Current us-gaap:OperatingLeaseLiabilityCurrent  
Operating lease liabilities $ 6.5  
Operating Lease, Liability, Noncurrent us-gaap:OperatingLeaseLiabilityNoncurrent  
Operating lease liabilities, long-term $ 14.6  
Operating Lease, Liability us-gaap:OperatingLeaseLiability  
Total operating lease liabilities $ 21.1 $ 28.4