Condensed Consolidated Statements of Shareholder's Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interest
Beginning balance at Dec. 31, 2021	$ 336.0	$ 0.0	$ 137.7	$ 206.7	$ (19.2)	$ 10.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	3.4			6.3	(3.1)	0.2
Stock-based compensation expense	1.6		1.6
Dividend paid to parent	(1.5)			(1.5)
Ending balance at Mar. 31, 2022	339.5	0.0	139.3	211.5	(22.3)	11.0
Beginning balance at Dec. 31, 2021	336.0	0.0	137.7	206.7	(19.2)	10.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	(23.4)
Ending balance at Sep. 30, 2022	312.4	0.0	143.1	212.0	(54.0)	11.3
Beginning balance at Mar. 31, 2022	339.5	0.0	139.3	211.5	(22.3)	11.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	(13.1)			1.2	(14.8)	0.5
Stock-based compensation expense	1.8		1.8
Dividend paid to parent	(2.0)			(2.0)
Ending balance at Jun. 30, 2022	326.2	0.0	141.1	210.7	(37.1)	11.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	(13.7)			2.8	(16.9)	0.4
Stock-based compensation expense	2.0		2.0
Dividend paid to parent	(1.5)			(1.5)
Dividend	(0.6)					(0.6)
Ending balance at Sep. 30, 2022	312.4	0.0	143.1	212.0	(54.0)	11.3
Beginning balance at Dec. 31, 2022	281.3	0.0	144.9	186.7	(61.8)	11.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	9.7			4.5	5.1	0.1
Stock-based compensation expense	1.6		1.6
Dividend paid to parent	(1.5)			(1.5)
Ending balance at Mar. 31, 2023	291.1	0.0	146.5	189.7	(56.7)	11.6
Beginning balance at Dec. 31, 2022	281.3	0.0	144.9	186.7	(61.8)	11.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	20.0
Ending balance at Sep. 30, 2023	301.7	0.0	149.8	203.3	(62.2)	10.8
Beginning balance at Mar. 31, 2023	291.1	0.0	146.5	189.7	(56.7)	11.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	8.0			5.6	2.9	(0.5)
Stock-based compensation expense	1.7		1.7
Dividend paid to parent	(1.5)			(1.5)
Ending balance at Jun. 30, 2023	299.3	0.0	148.2	193.8	(53.8)	11.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	2.3			11.0	(8.4)	(0.3)
Stock-based compensation expense	1.6		1.6
Dividend paid to parent	(1.5)			(1.5)
Ending balance at Sep. 30, 2023	$ 301.7	$ 0.0	$ 149.8	$ 203.3	$ (62.2)	$ 10.8