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Business Combinations - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Jul. 01, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 27, 2019
Jun. 29, 2019
Business Acquisition [Line Items]          
Cash payment for acquisition   $ 31.5      
5.500% Senior Notes due 2027 [Member]          
Business Acquisition [Line Items]          
Long-term debt, gross     $ 1,060.0    
Eby-Brown [Member]          
Business Acquisition [Line Items]          
Total contingent consideration, outstanding     $ 86.4   $ 82.6
Reinhart [Member]          
Business Acquisition [Line Items]          
Business combination, purchase price $ 2,000.0        
Business combination, purchase price net of tax benefit 1,700.0        
Business combination, estimated tax benefit 265.0        
Reinhart [Member] | Asset-Based Revolving Credit Facility [Member] | Minimum [Member]          
Business Acquisition [Line Items]          
Estimated borrowings to finance purchase price 300.0        
Reinhart [Member] | Asset-Based Revolving Credit Facility [Member] | Maximum [Member]          
Business Acquisition [Line Items]          
Estimated borrowings to finance purchase price $ 400.0        
Reinhart [Member] | 5.500% Senior Notes due 2027 [Member]          
Business Acquisition [Line Items]          
Long-term debt, gross       $ 1,060.0