Basis Of Presentation and Recent Accounting Pronouncements - Adoption of 606 Schedule (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	$ 364.2		$ 245.7
Inventory, Net	675.7		631.2
Accrued Liabilities, Current	199.9		$ 197.4
Revenues	802.3	$ 674.2
Cost of Goods Sold	739.8	$ 588.6
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	24.7
Inventory, Net	(21.6)
Accrued Liabilities, Current	1.9
Revenues	(4.6)
Cost of Goods Sold	$ (3.6)