Consolidated Statements of Stockholders’ Equity - USD ($) $ in Millions	Total	Common Stock	Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Accumulated Deficit
Balance at start of period at Dec. 31, 2018	$ 789.7	$ 1.1	$ 1,941.0	$ (461.7)	$ (33.9)	$ (656.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(0.6)					(0.6)
Gain (Loss) on derivative financial instruments, net of tax	(1.1)			(1.1)
Translation impact	(3.1)			(3.1)
Pension and post-retirement adjustment, net of tax	(1.1)			(1.1)
Common stock repurchases	(11.0)		(11.0)
Stock-based compensation	2.0		2.0
Common stock issued, net of shares withheld for employee taxes	(4.3)				(4.3)
Dividends declared	(6.2)					(6.2)
Other	0.0		0.1			(0.1)
Balance at end of period at Mar. 31, 2019	$ 764.8	$ 1.1	1,931.9	(467.0)	$ (38.2)	(663.0)
Balance at start of period (in shares) at Dec. 31, 2018	102,748,700	106,249,322			3,500,622
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes	978,034	1,437,021			458,987
Common stock repurchases	(1,260,163)	(1,260,163)
Balance at end of period (in shares) at Mar. 31, 2019	102,466,571	106,426,180			3,959,609
Balance at start of period at Dec. 31, 2019	$ 773.7	$ 1.0	1,890.8	(505.7)	$ (38.2)	(574.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	8.0					8.0
Gain (Loss) on derivative financial instruments, net of tax	2.4			2.4
Translation impact	(49.7)			(49.7)
Pension and post-retirement adjustment, net of tax	7.9			7.9
Common stock repurchases	(18.9)		(18.9)
Stock-based compensation	0.9		0.9
Common stock issued, net of shares withheld for employee taxes	(0.2)		1.5		(1.7)
Dividends declared	(6.2)					(6.2)
Balance at end of period at Mar. 31, 2020	$ 717.9	$ 1.0	$ 1,874.3	$ (545.1)	$ (39.9)	$ (572.4)
Balance at start of period (in shares) at Dec. 31, 2019	96,445,488	100,412,933			3,967,445
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes	692,421	898,664			206,243
Common stock repurchases	(2,690,292)	(2,690,292)
Balance at end of period (in shares) at Mar. 31, 2020	94,447,617	98,621,305			4,173,688