Consolidated Statements of Total Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total Shareholders' Equity	Noncontrolling Interests
Beginning Balance, Total Equity at Dec. 31, 2021	$ 6,537.6	$ 0.6	$ 3,470.4	$ (97.6)	$ 3,161.9	$ 6,535.3	$ 2.3
Beginning Balance (in shares) at Dec. 31, 2021		62,400,000
Consolidated net earnings (loss)	21.3				21.4	21.4	(0.1)
Other comprehensive earnings / loss, net of tax	(31.6)			(31.6)		(31.6)
Dividends declared	(38.4)				(38.4)	(38.4)
Issuances of common stock for stock award plans	4.6		4.6			4.6
Issuances of common stock for stock award plans (in shares)		100,000
Shares withheld for employees' income tax obligations	(24.4)		(24.4)			(24.4)
Repurchases of common stock, Shares		(100,000)
Repurchases of common stock	(50.0)				(50.0)	(50.0)
Stock-based compensation expense	12.0		12.0			12.0
Ending Balance, Total Equity at Mar. 31, 2022	6,431.1	$ 0.6	3,462.6	(129.2)	3,094.9	6,428.9	2.2
Ending Balance (in shares) at Mar. 31, 2022		62,400,000
Beginning Balance, Total Equity at Dec. 31, 2022	$ 7,172.8	$ 0.6	3,489.0	(38.5)	3,719.4	7,170.5	2.3
Beginning Balance (in shares) at Dec. 31, 2022	62,100,000	62,100,000
Consolidated net earnings (loss)	$ 121.6				121.4	121.4	0.2
Other comprehensive earnings / loss, net of tax	1.1			1.1		1.1
Dividends declared	(41.2)				(41.2)	(41.2)
Issuances of common stock for stock award plans	1.3		1.3			1.3
Issuances of common stock for stock award plans (in shares)		100,000
Shares withheld for employees' income tax obligations	(16.8)		(16.8)			(16.8)
Repurchases of common stock, Shares		(200,000)
Repurchases of common stock	(75.0)				(75.0)	(75.0)
Stock-based compensation expense	13.7		13.7			13.7
Ending Balance, Total Equity at Mar. 31, 2023	$ 7,177.5	$ 0.6	$ 3,487.2	$ (37.4)	$ 3,724.6	$ 7,175.0	$ 2.5
Ending Balance (in shares) at Mar. 31, 2023	62,000,000.0	62,000,000.0