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 Jul. 03, 2021		$ 2,106.1			$ 1.3	$ 1,752.8		$ (5.3)		$ 357.3
Balance Beginning, shares at Jul. 03, 2021					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
Net Income (Loss)		397.2								397.2
Interest rate swaps		2.6	3.4						3.4
Foreign currency translation adjustment		(0.8)						(0.8)
Issuance of common stock under stock-based compensation plans		(9.5)				(9.5)
Issuance of common stock under stock-based compensation plans, shares					600,000
Issuance of common stock under employee stock purchase plan		27.7				27.7
Issuance of common stock under employee stock purchase plan, shares					500,000
Common stock repurchased		(11.2)			$ (11.2)	(11.2)
Common stock repurchased, shares					(200,000)
Stock-based compensation expense		39.2				39.2
Balance Ending at Jul. 01, 2023		$ 3,745.5			$ 1.5	2,863.0		14.0		867.0
Balance Ending, shares at Jul. 01, 2023		154,500,000			154,500,000
Net Income (Loss)		$ 435.9								435.9
Interest rate swaps		(10.0)	$ (8.6)						$ (8.6)
Foreign currency translation adjustment		(1.4)						(1.4)
Issuance of common stock under stock-based compensation plans		(19.3)				(19.3)
Issuance of common stock under stock-based compensation plans, shares					800,000
Issuance of common stock under employee stock purchase plan		15.5				15.5
Issuance of common stock under employee stock purchase plan, shares					200,000
Common stock repurchased		(78.1)			$ (78.1)	(78.1)
Common stock repurchased, shares					(1,300,000)
Stock-based compensation expense		37.4				37.4
Balance Ending at Jun. 29, 2024		$ 4,126.9			$ 1.5	$ 2,818.5		$ 4.0		$ 1,302.9
Balance Ending, shares at Jun. 29, 2024		154,200,000			154,200,000

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