Operating Segments and Geographic Information - Segment Reconciling Items (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jan. 02, 2021	Dec. 28, 2019	Jan. 02, 2021	Dec. 28, 2019
Information on reportable segments
Gross profit	$ 180.1	$ 189.5	$ 349.5	$ 363.9
Income from operations	42.3	45.0	73.6	65.7
Stock-based compensation	(9.9)	(11.3)	(22.4)	(21.6)
Amortization of intangibles	(8.1)	(8.8)	(16.6)	(17.5)
Change in fair value of contingent liability			1.5	4.3
Restructuring and related (benefits) charges	(0.2)	0.9	0.4	0.6
Other Items
Information on reportable segments
Gross profit	(9.2)	(9.7)	(18.6)	(19.2)
Income from operations	(24.5)	(22.9)	(53.8)	(54.9)
Gross Profit
Information on reportable segments
Gross profit	180.1	189.5	349.5	363.9
Gross Profit \| Segment Measures
Information on reportable segments
Gross profit	189.3	199.2	368.1	383.1
Gross Profit \| Other Items
Information on reportable segments
Stock-based compensation	(1.2)	(1.0)	(2.4)	(2.0)
Amortization of intangibles	(8.4)	(8.4)	(16.6)	(16.8)
Other charges unrelated to core operating performance	0.4	(0.3)	0.4	(0.4)
Operating Income (Loss)
Information on reportable segments
Restructuring and related (benefits) charges	(0.2)	0.9
Operating Income (Loss) \| Segment Measures
Information on reportable segments
Income from operations	66.8	67.9	127.4	120.6
Operating Income (Loss) \| Other Items
Information on reportable segments
Stock-based compensation	(9.9)	(11.3)	(22.4)	(21.6)
Amortization of intangibles	(16.5)	(17.2)	(33.2)	(34.3)
Change in fair value of contingent liability	1.5	6.0	1.5	4.3
Other charges unrelated to core operating performance	$ 0.6	$ (1.3)	(0.1)	(3.9)
Restructuring and related (benefits) charges			$ (0.4)	$ (0.6)

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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