Revenue Recognition - Schedule of ASC 606 Impact on Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net income (loss)	$ 36.2	$ (69.6)	$ 117.0	$ 2.0
Comprehensive income (loss)	(133.1)	$ 87.2	19.9	$ 214.3
Adjustments | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net income (loss)	2.8		0.3
Comprehensive income (loss)	2.8		0.3
Balances without adoption of ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net income (loss)	39.0		117.3
Comprehensive income (loss)	$ (130.3)		$ 20.2