Other Income and Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	May. 03, 2012
Other income and expense:
Other income (expense), net	$ 6.3	$ 0.7	$ 3.7	$ 1.5
Gain on Sale of Nonoperating Asset [Member]
Other income and expense:
Other Nonoperating Income (Expense)	3.3	0.0	3.3	0.0
Other Foreign Exchange and Derivative Activity [Member]
Other income and expense:
Other income (expense), net	2.7	0.5	0.1	1.3
Other income (expense), net [Member]
Other income and expense:
Other income (expense), net	$ 0.3	$ 0.2	$ 0.3	$ 0.2
Senior Notes [Member]
Other income and expense:
Debt instrument, face amount					$ 1,900.0