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Restructuring and Related Charges - Summary of Restructuring Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 30, 2018	Jun. 30, 2019
Summary of various restructuring plans
Accrual balance at the beginning of the period	$ 8.8
Restructuring and related charges	3.5	$ 15.4	$ 8.3
Cash Settlements	(5.2)
Non-cash Settlements and Other Adjustments	(0.6)
Accrual balance at the end of the period	6.5	8.8
Lease liabilities	39.8
Restructuring reserve, current	6.5	8.6
Restructuring reserve, noncurrent		0.2
NSE, including AW
Summary of various restructuring plans
Accrual balance at the beginning of the period	8.7
Restructuring and related charges	3.5
Cash Settlements	(5.2)
Non-cash Settlements and Other Adjustments	(0.5)
Accrual balance at the end of the period	6.5	8.7
Other Plans Prior to Fiscal 2015
Summary of various restructuring plans
Accrual balance at the beginning of the period	0.1
Restructuring and related charges	0.0
Cash Settlements	0.0
Non-cash Settlements and Other Adjustments	(0.1)
Accrual balance at the end of the period	$ 0.0	$ 0.1
Accounting Standards Update 2016-02 \| NSE, Including AW And Other Plans
Summary of various restructuring plans
Lease liabilities				$ 0.2