Accounting Policies (Equity Method Investments) (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Entity Information [Line Items]
Reclassification of foreign currency translation gains to net income		$ (10.4)	$ 0.0	$ 0.0
Equity Method Investment Held For Sale Price		16.3
Our share of joint venture earnings		0.4	2.3	2.1
Proceeds from disposal of equity method investment, net	$ 16.3	14.6	0.0	0.0
Equity Method Investment, Transaction Fee		1.7
Equity Method Investment, Amount Sold		22.7
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		1.3	$ (12.0)	$ (4.1)
Gain (Loss) on Sale of Equity Investments		2.3
JHJ international Transportation Co. [Member]
Entity Information [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		$ 10.4