Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Dec. 31, 2016	Jan. 02, 2016	Jul. 02, 2016
Income Tax Disclosure [Abstract]
(Benefit from) provision for income taxes	$ 5.8	$ 1.1	$ 11.5	$ 4.0
Valuation Allowance [Line Items]
Increase in valuation allowance due to Separation				8.9
Unrecognized tax benefits	42.3		42.3		$ 41.7
Interest and penalties accrued	2.3		2.3
Unrecognized tax benefits that may be recognized during the next twelve months	$ 1.0		$ 1.0
Continuing operations
Valuation Allowance [Line Items]
Tax benefit from discontinued operations		$ 8.8		$ 22.2