CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Millions	Preferred stock	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock	Non-controlling interest	Total
Balance at Dec. 31, 2019	$ 667.3	$ 0.3	$ 3.3	$ 239.4	$ (220.7)	$ (49.6)	$ 340.1	$ 980.1
Net income				55.2			33.8	89.0
Cash dividends			(2.2)	(11.4)				(13.6)
Dividends paid to noncontrolling interest							(49.4)	(49.4)
Other comprehensive income (loss), net					1.3		0.1	1.4
Contribution of preferred stock	(667.3)		(667.3)
Equity transaction with noncontrolling interest, net and other			(0.1)	(0.3)			(0.2)	(0.6)
Balance at Dec. 31, 2020		0.3	668.3	282.9	(219.4)	(49.6)	324.4	1,006.9
Net income				127.2			70.5	197.7
Cash dividends				(9.0)				(9.0)
Dividends paid to noncontrolling interest							(74.4)	(74.4)
Other comprehensive income (loss), net					28.1		10.1	38.2
Equity transaction with noncontrolling interest, net and other			0.7				(1.7)	(1.0)
Balance at Dec. 31, 2021		0.3	669.0	401.1	(191.3)	(49.6)	328.9	1,158.4
Net income				90.2			45.9	136.1
Cash dividends				(9.0)				(9.0)
Dividends paid to noncontrolling interest							(38.9)	(38.9)
Other comprehensive income (loss), net					47.4		16.9	64.3
Equity transaction with noncontrolling interest, net and other	$ 0.0	0.0	0.5	0.0	0.0	0.0	(4.6)	(4.1)
Balance at Dec. 31, 2022		$ 0.3	$ 669.5	$ 482.3	$ (143.9)	$ (49.6)	$ 348.2	$ 1,306.8