Investments Equity Method Investments (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Dec. 31, 2015	Jun. 27, 2015	Jun. 28, 2014
Schedule of Equity Method Investments [Line Items]
Net loss from equity method investment	$ (7.1)	$ (9.9)	$ (8.7)
Realized loss on sale of equity method investment			(2.8)
Other Noncurrent Assets [Member]
Schedule of Equity Method Investments [Line Items]
Cost Method Investments	6.9	6.8	9.0
Equity method investments	$ 45.5	$ 48.9	$ 57.4