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Commitments and Contingencies (Details) £ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 02, 2021 USD ($)	Dec. 28, 2019 USD ($)	Jan. 02, 2021 USD ($)	Dec. 28, 2019 USD ($)	Jan. 02, 2021 GBP (£)	Jun. 27, 2020 USD ($)	Jul. 02, 2016 GBP (£)	Jun. 30, 2016 GBP (£)
Loss Contingencies [Line Items]
Standby letters of credit	$ 7.6		$ 7.6
Warranty accrual	4.5		$ 4.5			$ 4.6
Product Warranties
Warranty Term for most products			3 years
Changes in warranty reserve
Balance as of beginning of period	9.6	$ 8.8	$ 9.4	$ 8.7
Provision for warranty	1.6	0.9	2.0	1.3
Utilization of reserve	(1.2)	(0.8)	(1.4)	(1.8)
Adjustments to pre-existing warranties (includes changes in estimates)	(0.4)	0.3	(0.4)	1.0
Balance as of the end of period	9.6	$ 9.2	9.6	$ 9.2
Performance bond
Loss Contingencies [Line Items]
Guarantee liabilities	0.9		0.9
Judicial ruling \| Case related to amendment of pension for foreign subsidiary
Loss Contingencies [Line Items]
Loss contingency accrual	$ 8.8		$ 8.8		£ 6.5
Minimum \| Judicial ruling \| Case related to amendment of pension for foreign subsidiary
Loss Contingencies [Line Items]
Estimated liability (in pounds) \| £								£ 5.7
Loss contingency accrual \| £							£ 5.7
Maximum \| Judicial ruling \| Case related to amendment of pension for foreign subsidiary
Loss Contingencies [Line Items]
Estimated liability (in pounds) \| £								£ 8.4