CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Millions	Total	Preferred stock	Common stock	Additional paid-in capital	Retained earnings (deficit)	Accumulated other comprehensive income (loss)	Treasury stock	Non-controlling interest
Balance at Dec. 31, 2014	$ 813.9	$ 667.3	$ 3.6		$ 4.9	$ (148.6)	$ (49.6)	$ 336.3
Net income (loss)	(171.1)				(133.6)			(37.5)
Cash dividends	(41.7)			$ (0.2)	(26.9)			(14.6)
Other comprehensive income (loss), net	(74.4)					(48.4)		(26.0)
Equity transactions with noncontrolling interest, net	0.2			0.2
Balance at Dec. 31, 2015	526.9	667.3	3.6		(155.6)	(197.0)	(49.6)	258.2
Net income (loss)	(3.0)				(15.9)			12.9
Cash dividends	(48.7)			(0.2)	(26.9)			(21.6)
Other comprehensive income (loss), net	(30.9)					(24.9)		(6.0)
Equity transactions with noncontrolling interest, net	0.1			0.2	(0.1)
Balance at Dec. 31, 2016	444.4	667.3	3.6		(198.5)	(221.9)	(49.6)	243.5
Net income (loss)	302.6				207.5			95.1
Cash dividends	(45.3)			(0.3)	(26.9)			(18.1)
Other comprehensive income (loss), net	64.6					42.9		21.7
Equity transactions with noncontrolling interest, net	0.4			$ 0.3				0.1
Balance at Dec. 31, 2017	$ 766.7	$ 667.3	$ 3.6		$ (17.9)	$ (179.0)	$ (49.6)	$ 342.3