Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Loss on derivatives, tax (benefit) expense	$ (5.2)	$ (4.5)	$ (4.8)
Long-term employee benefit plans, net of tax expense (benefit)	8.7	6.5	12.6
Foreign currency translation, tax expense	$ 0.0	$ 0.0	$ 0.0