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Recently Issued Accounting Pronouncements - Expected impact resulting from adoption of standard (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jun. 30, 2018	Jul. 01, 2017	Jul. 02, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Net Revenues	$ 264.0	$ 219.4	$ 201.8	$ 195.2	$ 198.1	$ 196.0	$ 206.5	$ 210.8	$ 880.4	$ 811.4	$ 906.3
Gross Profit	$ 136.2	$ 123.7	$ 116.1	$ 116.2	$ 119.2	$ 117.0	$ 124.7	$ 125.1	492.2	486.0	$ 549.7
Period Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Net Revenues									(5.4)	(7.6)
Gross Profit									(4.6)	(8.1)
As Adjusted
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Net Revenues									875.0	803.8
Gross Profit									$ 487.6	$ 477.9

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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-Name Accounting Standards Codification
-Topic 606
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