CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Millions	Total	Common stock	Additional paid-in capital	Retained earnings (deficit)	Accumulated other comprehensive income (loss)	Treasury stock
Beginning Balance at Dec. 31, 2018	$ 839.8	$ 1.2	$ 1,399.1	$ (136.2)	$ (424.3)
Net income	30.3			30.3
Other comprehensive income (loss), net of tax	2.1				2.1
Dividends paid	(20.9)			(20.9)
Ending Balance at Mar. 31, 2019	851.3	1.2	1,399.1	(126.8)	(422.2)
Beginning Balance at Dec. 31, 2019	816.1	1.2	1,396.2	(132.5)	(448.8)
Net income	27.0			27.0
Other comprehensive income (loss), net of tax	(39.0)				(39.0)
Dividends paid	(20.8)			(20.8)
Treasury stock acquired	(1.0)					$ (1.0)
Ending Balance at Mar. 31, 2020	$ 782.3	$ 1.2	$ 1,396.2	$ (126.3)	$ (487.8)	$ (1.0)