CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Currency translation adjustment, tax expense (benefit)	$ (0.2)	$ (0.1)	$ (2.8)	$ (0.6)
Amortization of pension related costs, tax expense (benefit)	(0.4)	0.0	(0.7)	0.0
Revaluation of derivative financial instrument, tax expense (benefit)	$ 0.0	$ (1.2)	$ (1.2)	$ (1.8)