Consolidated Statements of Equity - 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, 2019	$ 918.9	$ 0.3	$ 330.4	$ (93.3)	$ 755.5	$ (74.4)	$ 0.4
Net income	28.7				28.7
Dividend paid	(25.6)				(25.6)
Changes in cumulative translation adjustment, net of tax	23.7					23.7
Share of net income	0.1						0.1
Treasury stock re-issued	2.0		(0.1)	2.1
Treasury stock repurchased	(2.1)			(2.1)
Stock option compensation	5.8		5.8
Amortization of prior service cost, net of tax	(0.4)					(0.4)
Amortization of actuarial net losses, net of tax	1.5					1.5
Actuarial net gains (losses) arising during the year, net of tax	(7.7)					(7.7)
Ending Balance at Dec. 31, 2020	944.9	0.3	336.1	(93.3)	758.6	(57.3)	0.5
Net income	93.1				93.1
Dividend paid	(28.8)				(28.8)
Changes in cumulative translation adjustment, net of tax	(20.2)					(20.2)
Share of net income	0.1						0.1
Treasury stock re-issued	9.7		6.2	3.5
Treasury stock repurchased	(0.8)			(0.8)
Stock option compensation	4.4		4.4
Amortization of prior service cost, net of tax	0.2					0.2
Amortization of actuarial net losses, net of tax	2.2					2.2
Actuarial net gains (losses) arising during the year, net of tax	28.2					28.2
Ending Balance at Dec. 31, 2021	1,033.0	0.3	346.7	(90.6)	822.9	(46.9)	0.6
Net income	133.0				133.0
Dividend paid	(31.7)				(31.7)
Changes in cumulative translation adjustment, net of tax	(29.2)					(29.2)
Non-controlling interest investment	1.8						1.8
Treasury stock re-issued	1.7		0.7	1.0
Treasury stock repurchased	(5.8)			(5.8)
Stock option compensation	6.7		6.7
Amortization of prior service cost, net of tax	0.4					0.4
Amortization of actuarial net losses, net of tax	0.4					0.4
Actuarial net gains (losses) arising during the year, net of tax	(69.9)					(69.9)
Ending Balance at Dec. 31, 2022	$ 1,040.4	$ 0.3	$ 354.1	$ (95.4)	$ 924.2	$ (145.2)	$ 2.4