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, 2020	$ 0.3	$ 668.3	$ 282.9	$ (219.4)	$ (49.6)	$ 324.4	$ 1,006.9
Net income			75.2			34.1	109.3
Other comprehensive income (loss), net				4.4		1.5	5.9
Dividends paid to noncontrolling interest						(45.3)	(45.3)
Cash dividends			(6.8)				(6.8)
Equity transaction with noncontrolling interest, net and other		1.2				(1.5)	(0.3)
Balance at Sep. 30, 2021	0.3	669.5	351.3	(215.0)	(49.6)	313.2	1,069.7
Balance at Jun. 30, 2021	0.3	669.5	314.6	(212.1)	(49.6)	322.7	1,045.4
Net income			39.0			15.5	54.5
Other comprehensive income (loss), net				(2.9)		(1.0)	(3.9)
Dividends paid to noncontrolling interest						(24.0)	(24.0)
Cash dividends			(2.3)				(2.3)
Balance at Sep. 30, 2021	0.3	669.5	351.3	(215.0)	(49.6)	313.2	1,069.7
Balance at Dec. 31, 2021	0.3	669.0	401.1	(191.3)	(49.6)	328.9	1,158.4
Net income			99.6			47.0	146.6
Other comprehensive income (loss), net				(32.2)		(11.4)	(43.6)
Dividends paid to noncontrolling interest						(27.5)	(27.5)
Cash dividends			(6.7)				(6.7)
Equity transaction with noncontrolling interest, net and other		0.8				(3.5)	(2.7)
Balance at Sep. 30, 2022	0.3	669.8	494.0	(223.5)	(49.6)	333.5	1,224.5
Balance at Jun. 30, 2022	0.3	669.8	470.0	(207.8)	(49.6)	335.2	1,217.9
Net income			26.2			14.6	40.8
Other comprehensive income (loss), net				(15.7)		(5.5)	(21.2)
Dividends paid to noncontrolling interest						(10.8)	(10.8)
Cash dividends			(2.2)				(2.2)
Balance at Sep. 30, 2022	$ 0.3	$ 669.8	$ 494.0	$ (223.5)	$ (49.6)	$ 333.5	$ 1,224.5