Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions		Total	Interest Rate Swaps [Member]	Change in Accounting Principle [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Change in Accounting Principle [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Interest Rate Swaps [Member]	Retained Earnings [Member]
Balance Beginning at Jun. 29, 2019		$ 1,298.2			$ 1.0	$ 866.7		$ (0.2)		$ 430.7
Balance Beginning, shares at Jun. 29, 2019					103,800,000
Net income (loss)		(114.1)								(114.1)
Interest rate swaps		(10.1)	$ (10.1)						$ (10.1)
Foreign currency translation adjustment		0.0
Issuance of common stock under stock-based compensation plans		(3.1)				(3.1)
Issuance of common stock under stock-based compensation plans, shares					600,000
Issuance of common stock in secondary offering, net of underwriter discount and offering costs		828.1			$ 0.3	827.8
Issuance of common stock in secondary offering, net of underwriter discount and offering costs, shares					27,200,000
Stock-based compensation expense		16.6				16.6
Common stock repurchased		(5.0)			$ (5.0)	(5.0)
Common stock repurchased, shares					(300,000)
Balance Ending at Jun. 27, 2020		2,010.6			$ 1.3	1,703.0		(10.3)		316.6
Balance Ending, shares at Jun. 27, 2020					131,300,000
Net income (loss)		40.7								40.7
Interest rate swaps		5.0	5.0						5.0
Foreign currency translation adjustment		0.0
Issuance of common stock under stock-based compensation plans		0.8				0.8
Issuance of common stock under stock-based compensation plans, shares					500,000
Issuance of common stock under employee stock purchase plan		26.2				26.2
Issuance of common stock under employee stock purchase plan, shares					700,000
Stock-based compensation expense		22.8				22.8
Balance Ending at Jul. 03, 2021		$ 2,106.1			$ 1.3	1,752.8		(5.3)		357.3
Balance Ending, shares at Jul. 03, 2021		132,500,000			132,500,000
Net income (loss)		$ 112.5								112.5
Interest rate swaps		16.7	$ 18.0						$ 18.0
Foreign currency translation adjustment		(1.3)						(1.3)
Issuance of common stock under stock-based compensation plans		(8.7)				(8.7)
Issuance of common stock under stock-based compensation plans, shares					700,000
Issuance of common stock under employee stock purchase plan		24.6				24.6
Issuance of common stock under employee stock purchase plan, shares					500,000
Conversion of Core-Mark shares of common stock		998.8			$ 0.2	998.6
Conversion of Core-Mark shares of common stock, shares					19,900,000
Conversion of Core-Mark stock-based compensation	[1]			$ 9.2			$ 9.2
Stock-based compensation expense		40.3				40.3
Balance Ending at Jul. 02, 2022		$ 3,299.5			$ 1.5	$ 2,816.8		$ 11.4		$ 469.8
Balance Ending, shares at Jul. 02, 2022		153,600,000			153,600,000

[1] (1) Represents the portion of replacement stock-based compensation awards that relates to pre-combination vesting.