Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Stockholders' Equity Roll Forward
Beginning Balance	$ 2,377.7	$ 2,225.2
Net Income	121.9	116.0
Foreign currency translation adjustments	(22.6)	(44.4)
Pension and postretirement liability adjustments	(1.5)	(1.6)
Change in fair value of derivative financial instruments, net of reclassifications	2.0	2.2
Dividends	(23.5)	(23.8)
Stock-based compensation expense	7.1	6.5
Stock purchased at fair market value	(100.0)	(26.3)
Stock option exercise activity	1.4	14.1
Payments related to tax withholding for stock-based compensation	(7.5)	(17.8)
Ending Balance	2,355.0	2,250.1
Pension and postretirement liability adjustment, tax	$ 0.5	$ 0.6
Dividend per share (in dollars per shares)	$ 0.30	$ 0.29
Stated Capital
Stockholders' Equity Roll Forward
Beginning Balance	$ 40.7	$ 40.7
Ending Balance	40.7	40.7
Other Paid-In Capital
Stockholders' Equity Roll Forward
Beginning Balance	786.9	740.7
Stock-based compensation expense	7.1	6.5
Stock option exercise activity	1.4	14.1
Ending Balance	795.4	761.3
Retained Earnings
Stockholders' Equity Roll Forward
Beginning Balance	1,616.4	1,339.5
Net Income	118.2	113.3
Dividends	(23.5)	(23.8)
Ending Balance	1,711.1	1,429.0
Accumulated Other Comprehensive Income (Loss)
Stockholders' Equity Roll Forward
Beginning Balance	(23.0)	41.3
Foreign currency translation adjustments	(20.0)	(44.0)
Pension and postretirement liability adjustments	(1.5)	(1.6)
Change in fair value of derivative financial instruments, net of reclassifications	2.0	2.2
Ending Balance	(42.5)	(2.1)
Treasury Stock
Stockholders' Equity Roll Forward
Beginning Balance	(126.1)	(9.3)
Stock purchased at fair market value	(100.0)	(26.3)
Payments related to tax withholding for stock-based compensation	(7.5)	(17.8)
Ending Balance	(233.6)	(53.4)
Non controlling Interest
Stockholders' Equity Roll Forward
Beginning Balance	82.8	72.3
Net Income	3.7	2.7
Foreign currency translation adjustments	(2.6)	(0.4)
Ending Balance	$ 83.9	$ 74.6