CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Total Shareholders’ Equity	Common Stock and Additional Paid-In Capital	Retained Earnings	Cumulative Translation Adjustment	Retirement Benefits Adjustment	Treasury Stock	Noncontrolling Interest
Beginning balance at Dec. 31, 2021	$ 2,803.1	$ 2,803.1	$ 796.5	$ 3,126.5	$ (62.2)	$ (7.4)	$ (1,050.3)	$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	456.7	456.9		456.9				(0.2)
Cumulative translation adjustment	(196.3)	(196.3)			(196.3)
Net change in retirement obligations (net of tax)	1.8	1.8				1.8
Net issuance of shares of common stock (net of tax)	3.9	3.9					3.9
Repurchase of shares of common stock	(146.7)	(146.7)					(146.7)
Share-based compensation	16.4	16.4	16.4
Cash dividends declared	(136.3)	(136.3)		(136.3)
Ending balance at Sep. 30, 2022	2,802.6	2,802.8	812.9	3,447.1	(258.5)	(5.6)	(1,193.1)	(0.2)
Beginning balance at Jun. 30, 2022	2,788.0	2,788.2	810.0	3,313.8	(163.6)	(6.2)	(1,165.8)	(0.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	178.7	178.7		178.7
Cumulative translation adjustment	(94.9)	(94.9)			(94.9)
Net change in retirement obligations (net of tax)	0.6	0.6				0.6
Net issuance of shares of common stock (net of tax)	3.6	3.6					3.6
Repurchase of shares of common stock	(30.9)	(30.9)					(30.9)
Share-based compensation	2.9	2.9	2.9
Cash dividends declared	(45.4)	(45.4)		(45.4)
Ending balance at Sep. 30, 2022	2,802.6	2,802.8	812.9	3,447.1	(258.5)	(5.6)	(1,193.1)	(0.2)
Beginning balance at Dec. 31, 2022	3,039.6	3,039.3	818.1	3,531.7	(137.1)	10.9	(1,184.3)	0.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	487.3	487.5		487.5				(0.2)
Cumulative translation adjustment	(19.2)	(19.2)			(19.2)
Net change in retirement obligations (net of tax)	(0.8)	(0.8)				(0.8)
Net issuance of shares of common stock (net of tax)	7.7	7.7					7.7
Repurchase of shares of common stock	(1.1)	(1.1)					(1.1)
Share-based compensation	18.9	18.9	18.9
Cash dividends declared	(145.2)	(145.2)		(145.2)
Ending balance at Sep. 30, 2023	3,387.2	3,387.1	837.0	3,874.0	(156.3)	10.1	(1,177.7)	0.1
Beginning balance at Jun. 30, 2023	3,278.9	3,278.7	835.1	3,713.4	(98.2)	10.4	(1,182.0)	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	209.0	209.1		209.1				(0.1)
Cumulative translation adjustment	(58.1)	(58.1)			(58.1)
Net change in retirement obligations (net of tax)	(0.3)	(0.3)				(0.3)
Net issuance of shares of common stock (net of tax)	4.3	4.3					4.3
Share-based compensation	1.9	1.9	1.9
Cash dividends declared	(48.5)	(48.5)		(48.5)
Ending balance at Sep. 30, 2023	$ 3,387.2	$ 3,387.1	$ 837.0	$ 3,874.0	$ (156.3)	$ 10.1	$ (1,177.7)	$ 0.1