Investments Equity Method Investments (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Jun. 27, 2015	Jun. 28, 2014
Schedule of Equity Method Investments [Line Items]
Net loss from equity method investment	$ (5.4)	$ (4.1)	$ (11.6)	$ (8.7)
Equity method investment, realized gain disposal				$ (2.8)
Other noncurrent assets [Member]
Schedule of Equity Method Investments [Line Items]
Cost method Investments	6.9	6.9	6.8
Equity method investments	$ 45.5	$ 4.6	$ 47.2