CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Millions	Total	Common stock	Additional paid-in capital	Retained deficit	Accumulated other comprehensive loss	Treasury stock
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)
Beginning Balance at Dec. 31, 2020	796.5	1.2	1,395.3	(151.8)	(448.2)
Net income	19.6			19.6
Other comprehensive income (loss), net of tax	5.6				5.6
Dividends paid	(20.8)			(20.8)
Ending Balance at Mar. 31, 2021	$ 800.9	$ 1.2	$ 1,395.3	$ (153.0)	$ (442.6)