CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock	Non-controlling interest	Total
Balance at Dec. 31, 2023	$ 0.3	$ 669.5	$ 475.8	$ (145.5)	$ (49.6)	$ 325.7	$ 1,276.2
Net income			27.7			15.6	43.3
Other comprehensive income (loss), net				(11.5)		(4.0)	(15.5)
Dividends paid to noncontrolling interest						(12.9)	(12.9)
Cash dividends			(4.5)				(4.5)
Equity transactions with noncontrolling interest, net and other		0.4					0.4
Balance at Jun. 30, 2024	0.3	669.9	499.0	(157.0)	(49.6)	324.4	1,287.0
Balance at Mar. 31, 2024	0.3	669.5	481.3	(158.6)	(49.6)	321.6	1,264.5
Net income			19.9			9.8	29.7
Other comprehensive income (loss), net				1.6		0.6	2.2
Dividends paid to noncontrolling interest						(7.6)	(7.6)
Cash dividends			(2.2)				(2.2)
Equity transactions with noncontrolling interest, net and other		0.4					0.4
Balance at Jun. 30, 2024	0.3	669.9	499.0	(157.0)	(49.6)	324.4	1,287.0
Balance at Dec. 31, 2024	0.3	669.9	574.7	(159.2)	(49.6)	343.0	1,379.1
Net income			17.8			12.5	30.3
Other comprehensive income (loss), net				21.7		7.6	29.3
Dividends paid to noncontrolling interest						(4.6)	(4.6)
Cash dividends			(4.5)				(4.5)
Equity transactions with noncontrolling interest, net and other		0.4					0.4
Balance at Jun. 30, 2025	0.3	670.3	588.0	(137.5)	(49.6)	358.5	1,430.0
Balance at Mar. 31, 2025	0.3	669.9	589.3	(147.4)	(49.6)	350.8	1,413.3
Net income			0.9			6.6	7.5
Other comprehensive income (loss), net				9.9		3.4	13.3
Dividends paid to noncontrolling interest						(2.3)	(2.3)
Cash dividends			(2.2)				(2.2)
Equity transactions with noncontrolling interest, net and other		0.4					0.4
Balance at Jun. 30, 2025	$ 0.3	$ 670.3	$ 588.0	$ (137.5)	$ (49.6)	$ 358.5	$ 1,430.0