Revenue Recognition - Schedule of ASC 606 Impact on Statement of Cash Flows (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
(Decreases) in cash due to:
Inventories			(99.3)	(4.6)
Accrued income taxes			(20.8)	(85.8)
Other, net			(5.9)	(13.3)
Subtotal			(106.0)	(159.0)
Net cash from operating activities			254.7	$ 285.3
Adjustments | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net income (loss)	2.8		0.3
(Decreases) in cash due to:
Inventories			(1.1)
Accrued income taxes			(0.1)
Other, net			(1.3)
Subtotal			(0.3)
Net cash from operating activities			0.0
Balances without adoption of ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net income (loss)	$ 39.0		117.3
(Decreases) in cash due to:
Inventories			(98.2)
Accrued income taxes			(20.9)
Other, net			(7.2)
Subtotal			(106.3)
Net cash from operating activities			$ 254.7