Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 2,289.2	$ 2,367.3	$ 2,377.7	$ 2,225.2
Net Income	90.4	91.6	317.9	314.8
Foreign currency translation adjustments	(136.8)	(32.9)	(272.5)	(54.1)
Pension and other postretirement liability adjustments (net of income tax benefits)	(1.4)	(1.5)	(4.3)	(4.8)
Change in fair value of derivative financial instruments, net of reclassifications	1.8	2.5	6.0	4.5
Dividends paid to noncontrolling interest	(0.5)	(0.6)	(0.5)	(0.6)
Dividends	(22.8)	(22.8)	(69.2)	(69.5)
Stock-based compensation expense	6.7	3.1	22.3	15.6
Stock purchased at fair market value	(49.0)	(30.3)	(193.3)	(56.6)
Stock option exercise activity	2.6		4.2	25.4
Shares surrendered for stock option activity	0.0		0.0
Payments related to tax withholding for stock-based compensation	(1.4)		(9.5)	(23.5)
Ending Balance	2,178.8	2,376.4	2,178.8	2,376.4
Pension and other postretirement liability adjustment, tax benefit	$ 0.6	$ 0.5	$ 1.5	$ 1.6
Dividends (in dollars per shares)	$ 0.31	$ 0.30	$ 0.92	$ 0.89
Stated Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 40.7	$ 40.7	$ 40.7	$ 40.7
Ending Balance	40.7	40.7	40.7	40.7
Other Paid-In Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	804.1	778.6	786.9	740.7
Stock-based compensation expense	6.7	3.1	22.3	15.6
Stock option exercise activity	2.6		4.2	25.4
Shares surrendered for stock option activity	3.8		3.8
Ending Balance	817.2	781.7	817.2	781.7
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	1,793.2	1,510.9	1,616.4	1,339.5
Net Income	87.0	88.1	310.2	306.2
Dividends	(22.8)	(22.8)	(69.2)	(69.5)
Ending Balance	1,857.4	1,576.2	1,857.4	1,576.2
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(155.9)	19.8	(23.0)	41.3
Foreign currency translation adjustments	(133.5)	(33.1)	(267.7)	(53.3)
Pension and other postretirement liability adjustments (net of income tax benefits)	(1.4)	(1.5)	(4.3)	(4.8)
Change in fair value of derivative financial instruments, net of reclassifications	1.8	2.5	6.0	4.5
Ending Balance	(289.0)	(12.3)	(289.0)	(12.3)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(278.5)	(59.1)	(126.1)	(9.3)
Stock purchased at fair market value	(49.0)	(30.3)	(193.3)	(56.6)
Shares surrendered for stock option activity	(3.8)		(3.8)
Payments related to tax withholding for stock-based compensation	(1.4)		(9.5)	(23.5)
Ending Balance	(332.7)	(89.4)	(332.7)	(89.4)
Non controlling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	85.6	76.4	82.8	72.3
Net Income	3.4	3.5	7.7	8.6
Foreign currency translation adjustments	(3.3)	0.2	(4.8)	(0.8)
Dividends paid to noncontrolling interest	(0.5)	(0.6)	(0.5)	(0.6)
Ending Balance	$ 85.2	$ 79.5	$ 85.2	$ 79.5