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Insurance Program Liabilities - Summary of Activity in All Types of Deductible Insurance Program Liabilities (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jul. 01, 2017
Insurance [Abstract]      
Beginning balance $ 107.4 $ 97.8 $ 87.3
Additional liabilities assumed in connection with an acquisition 5.7    
Charged to costs and expenses 173.0 164.5 165.2
Payments (163.0) (154.9) (154.7)
Ending Balance $ 123.1 $ 107.4 $ 97.8