Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-Controlling Interest [Member]
Beginning Balance at Dec. 31, 2021	$ 1,033.0	$ 0.3	$ 346.7	$ (90.6)	$ 822.9	$ (46.9)	$ 0.6
Net income	36.5				36.5
Changes in cumulative translation adjustment, net of tax	(3.8)					(3.8)
Share of net income	0.1						0.1
Treasury stock reissued	2.1		1.2	0.9
Treasury stock repurchased	(0.9)			(0.9)
Stock option compensation	1.7		1.7
Amortization of prior service cost, net of tax	0.1					0.1
Amortization of actuarial net losses, net of tax	0.1					0.1
Ending Balance at Mar. 31, 2022	1,068.9	0.3	349.6	(90.6)	859.4	(50.5)	0.7
Beginning Balance at Dec. 31, 2022	1,040.4	0.3	354.1	(95.4)	924.2	(145.2)	2.4
Net income	33.2				33.2
Changes in cumulative translation adjustment, net of tax	4.7					4.7
Treasury stock reissued	0.9		(1.2)	2.1
Treasury stock repurchased	(0.2)			(0.2)
Stock option compensation	1.9		1.9
Amortization of prior service cost, net of tax	0.1					0.1
Amortization of actuarial net losses, net of tax	(0.4)					(0.4)
Ending Balance at Mar. 31, 2023	$ 1,080.6	$ 0.3	$ 354.8	$ (93.5)	$ 957.4	$ (140.8)	$ 2.4