Business Combinations - Additional Information (Detail) $ / shares in Units, $ in Millions			3 Months Ended	10 Months Ended	12 Months Ended
	Sep. 01, 2021 USD ($) $ / shares	Dec. 30, 2019 USD ($)	Sep. 26, 2020 USD ($)	Jul. 02, 2022 USD ($)	Jul. 02, 2022 USD ($) Acquisition	Jul. 03, 2021 USD ($) Acquisition	Jun. 27, 2020 USD ($) Acquisition	Apr. 02, 2022 USD ($)	Jul. 26, 2021	Sep. 27, 2019
Business Acquisition [Line Items]
Cash payment for acquisition					$ 1,650.5	$ 18.1	$ 1,989.0
Number of acquisitions | Acquisition					2	2	1
Cash portion of the acquisition	$ 1,100.0
Goodwill				$ 2,279.2	$ 2,279.2	$ 1,354.7	$ 1,353.0	$ 2,279.2
Net sales					50,894.1	30,398.9	25,086.3
Net income (loss)					112.5	40.7	(114.1)
Total purchase price					2,700.0
Net proceeds from offering common stock					$ 0.0	0.0	828.1
Acquisition costs, after tax						54.7
5.500% Senior Notes due 2027 [Member]
Business Acquisition [Line Items]
Debt instruments amount, interest rate				5.50%	5.50%					5.50%
4.250% Senior Notes due 2029 [Member]
Business Acquisition [Line Items]
Debt instruments amount, interest rate				4.25%	4.25%				4.25%
Reinhart [Member]
Business Acquisition [Line Items]
Total purchase price		$ 2,000.0
Business combination, purchase price net of tax benefit		1.7
Business combination, estimated tax benefit		265.0
Net proceeds from offering common stock		490.6
Business combination net working capital acquired				$ 67.3	$ 67.3
Reinhart [Member] | ABL Facility [Member]
Business Acquisition [Line Items]
Borrowings		464.7
Reinhart [Member] | 5.500% Senior Notes due 2027 [Member]
Business Acquisition [Line Items]
Net proceeds from new notes		$ 1,033.7
Eby-Brown [Member]
Business Acquisition [Line Items]
Payments of earnout			$ 185.6
Payments of earnout, financial activity						68.3
Payments of earnout, operating activity						117.3
Core-Mark [Member]
Business Acquisition [Line Items]
Cash portion of the acquisition	$ 1,079.2
Intangible assets estimated useful life	9 years 3 months 18 days
Goodwill	$ 863.2			863.2	863.2
Net sales					14,500.0
Net income (loss)				17.6
Total purchase price	$ 2,394.1
Business combination, share exchange ratio	0.44
Business combination net working capital acquired				$ 979.5	$ 979.5
Business combination share price in cash | $ / shares	$ 23.875
Core-Mark [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets estimated useful life	11 years
Core-Mark [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets estimated useful life	5 years
Core-Mark [Member] | Technology [Member]
Business Acquisition [Line Items]
Intangible assets estimated useful life	5 years
Business Acquisition Cost [Member]
Business Acquisition [Line Items]
Cash payment for acquisition						$ 18.1	$ 2,000.0