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, 2021	$ 0.3	$ 669.0	$ 416.6	$ (191.3)	$ (49.6)	$ 328.9	$ 1,173.9
Net income (loss)			87.2			45.9	133.1
Dividends paid to noncontrolling interest						(38.9)	(38.9)
Cash dividends			(9.0)				(9.0)
Other comprehensive income (loss), net				47.4		16.9	64.3
Equity transactions with noncontrolling interest, net and other		0.5				(4.6)	(4.1)
Balance at Dec. 31, 2022	0.3	669.5	494.8	(143.9)	(49.6)	348.2	1,319.3
Net income (loss)			(9.9)			15.0	5.1
Dividends paid to noncontrolling interest						(34.0)	(34.0)
Cash dividends			(9.1)				(9.1)
Other comprehensive income (loss), net				(1.6)		(1.3)	(2.9)
Equity transactions with noncontrolling interest, net and other						(2.2)	(2.2)
Balance at Dec. 31, 2023	0.3	669.5	475.8	(145.5)	(49.6)	325.7	1,276.2
Net income (loss)			108.0			53.3	161.3
Dividends paid to noncontrolling interest						(31.2)	(31.2)
Cash dividends			(9.1)				(9.1)
Other comprehensive income (loss), net				(13.7)		(4.8)	(18.5)
Equity transactions with noncontrolling interest, net and other		0.4					0.4
Balance at Dec. 31, 2024	$ 0.3	$ 669.9	$ 574.7	$ (159.2)	$ (49.6)	$ 343.0	$ 1,379.1