Segment Information - Schedule of Adjusted EBDITA and Reconciliation to Consolidated Income Before Taxes (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 28, 2024	Dec. 30, 2023
Segment Reporting Information [Line Items]
Depreciation and amortization	$ (182.5)	$ (143.3)	$ (335.4)	$ (272.6)
Interest expense	(100.2)	(61.4)	(167.0)	(117.5)
Change in LIFO reserve	(17.8)	(21.8)	(30.5)	(41.0)
Stock-based compensation expense	(11.7)	(11.0)	(23.0)	(21.7)
Gain (loss) on fuel derivatives	0.8	(1.8)	(0.6)	1.7
Acquisition, integration & reorganization expenses	(51.3)	(3.9)	(70.4)	(13.7)
Other adjustments	(3.6)	9.5	(4.4)	10.6
Income before taxes	56.7	111.7	203.6	275.0
Foodservice [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	289.9	224.1	569.9	470.1
Depreciation and amortization	(115.6)	(72.7)	(200.6)	(143.3)
Vistar [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	93.9	93.6	177.1	182.2
Depreciation and amortization	(13.3)	(12.8)	(27.7)	(23.2)
Convenience [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	107.3	83.5	212.6	178.2
Depreciation and amortization	(39.0)	(37.2)	(77.6)	(74.9)
Corporate & All Other [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	(68.1)	(55.8)	(124.7)	(101.3)
Depreciation and amortization	$ (14.6)	$ (20.6)	$ (29.5)	$ (31.2)