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Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Dec. 26, 2021	Dec. 27, 2020	Dec. 26, 2021	Dec. 27, 2020	Jun. 27, 2021
Operating Loss Carryforwards [Line Items]
Income tax expense (benefit)	$ 8.0	$ (0.2)	$ 8.3	$ (1.0)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Unrecognized tax benefits	7.4		7.4		$ 7.4
Estimated change in gross unrecognized tax benefits	0.6		0.6
Foreign Tax Authority \| Luxembourg Holding Company
Operating Loss Carryforwards [Line Items]
Income tax expense (benefit)	7.3
Income tax expense generated from taxable income	$ 129.1
Valuation allowance increase (decrease)			$ (121.8)