Components of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance		$ (45.9)	$ (34.7)
Other comprehensive income (loss) before reclassifications		1.3	(18.5)
Amounts reclassified to consolidated statement of income	[1]	(0.5)	(1.7)
Tax benefit (expense)		2.4	(1.2)
Other comprehensive income (loss)		3.2	(21.4)
Ending balance		(42.7)	(56.1)
Foreign Currency Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance		(38.5)	(16.4)
Other comprehensive income (loss) before reclassifications		9.9	(24.3)
Amounts reclassified to consolidated statement of income	[1]	0.0	0.0
Tax benefit (expense)		0.0	0.0
Other comprehensive income (loss)		9.9	(24.3)
Ending balance		(28.6)	(40.7)
Defined Benefit Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance		(11.5)	(17.7)
Other comprehensive income (loss) before reclassifications		0.0	0.0
Amounts reclassified to consolidated statement of income	[1]	0.0	0.0
Tax benefit (expense)		0.0	0.0
Other comprehensive income (loss)		0.0	0.0
Ending balance		(11.5)	(17.7)
Derivative Agreements
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance		4.1	(0.6)
Other comprehensive income (loss) before reclassifications		(8.6)	5.8
Amounts reclassified to consolidated statement of income	[1]	(0.5)	(1.7)
Tax benefit (expense)		2.4	(1.2)
Other comprehensive income (loss)		(6.7)	2.9
Ending balance		$ (2.6)	$ 2.3

[1] Amounts classified to cost of sales and selling, general and administrative expenses.