CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Sales	$ 264.2	$ 340.0
Cost of sales	168.5	217.7
Gross profit	95.7	122.3
Selling, general, and administrative expenses	89.8	103.3
Restructuring charges	3.6	7.6
Operating profit	2.3	11.4
Interest expense	3.0	4.9
Pension settlement charges	1.6	0.7
Other (income) expense, net	(0.6)	(1.2)
Income (loss) before income tax expense	(1.7)	7.0
Income tax expense (benefit)	0.2	(3.9)
Net earnings (loss)	(1.9)	10.9
Less: Net earnings attributable to Preferred stockholders	(1.9)	0.0
Net earnings (loss) attributable to common stockholders	$ (3.8)	$ 10.9
Net earnings (loss) per share:
Basic (in dollars per share)	$ (0.08)	$ 0.22
Diluted (in dollars per share)	$ (0.08)	$ 0.22
Weighted-average common shares outstanding: (in thousands)
Basic (in shares)	49,264	48,973
Diluted (in shares)	49,264	49,708
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on cash flow hedge, net of amounts reclassified into earnings	$ 1.1	$ (4.6)
Pension and other post-employment liability adjustments	7.2	(8.4)
Foreign currency translation adjustments	(3.8)	(9.3)
Foreign currency translation adjustments on long-term intercompany notes	(8.8)	(1.6)
Total other comprehensive income (loss), net	(4.3)	(23.9)
Total comprehensive income (loss)	$ (6.2)	$ (13.0)