Employee Pension and Other Benefit Plans - Amounts Recognized on Financial Statements (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 03, 2021
Amount recognized on the Consolidated Balance Sheets at end of year:
Non-current liabilities	$ 53.2	$ 59.6
Other changes in plan assets and benefit obligations recognized in other comprehensive (loss) income:
Net actuarial gain	2.0	13.9	$ 4.1
Amortization of accumulated net actuarial (gains) losses	(0.1)	2.9	$ 3.1
Pension Benefit Plans
Amount recognized on the Consolidated Balance Sheets at end of year:
Non-current assets	5.6	0.0
Current liabilities	7.8	7.0
Non-current liabilities	52.8	59.2
Other changes in plan assets and benefit obligations recognized in other comprehensive (loss) income:
Net actuarial gain	2.0	13.9
Amortization of accumulated net actuarial (gains) losses	(0.1)	2.9
Total recognized in other comprehensive income (loss)	$ 1.9	$ 16.8