CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other comprehensive income (loss):
Income tax expense (benefit) on translation adjustments on derivative instruments	$ (25.8)	$ 3.8	$ 10.2
Income tax expense on defined benefit pension plans and retiree health care plan	(11.6)	$ (8.1)	$ 4.6
Income tax expense on pension plan settlement	$ 4.5