CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Sales	$ 309.4	$ 356.5	$ 923.5	$ 1,056.6
Cost of sales	196.0	216.1	592.1	651.7
Gross profit	113.4	140.4	331.4	404.9
Selling, general, and administrative expenses	90.8	103.6	278.8	304.9
Loss on fair value remeasurement of contingent consideration	0.0	0.0	12.4	0.0
Restructuring charges	3.3	0.1	19.5	0.2
Operating profit	19.3	36.7	20.7	99.8
Interest expense	4.1	5.5	13.6	16.2
Loss on extinguishment of debt	0.2	0.4	0.2	0.4
Pension settlement charges	1.3	9.8	2.8	10.4
Other (income) expense, net	(0.5)	(2.5)	(1.3)	(4.1)
Income before income tax expense	14.2	23.5	5.4	76.9
Income tax expense (benefit)	7.2	6.0	(2.9)	19.8
Net earnings	7.0	17.5	8.3	57.1
Less: Net earnings attributable to Preferred stockholders	(1.4)	0.0	(1.4)	0.0
Net earnings available to common stockholders	$ 5.6	$ 17.5	$ 6.9	$ 57.1
Net earnings per share:
Basic (in dollars per share)	$ 0.11	$ 0.36	$ 0.14	$ 1.17
Diluted (in dollars per share)	$ 0.11	$ 0.35	$ 0.14	$ 1.16
Weighted-average common shares outstanding: (in thousands)
Basic (in shares)	49,112,000	48,873,000	49,057,000	48,835,000
Diluted (in shares)	49,441,000	49,574,000	49,485,000	49,360,000
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on cash flow hedge, net of amounts reclassified into earnings	$ 1.2	$ (0.4)	$ (3.0)	$ (4.7)
Pension and other post-employment liability adjustments	3.1	(2.5)	(4.5)	(2.0)
Foreign currency translation adjustments	5.4	(4.0)	0.0	(1.7)
Foreign currency translation adjustments on long-term intercompany notes	7.5	(7.1)	9.5	(9.2)
Total other comprehensive income (loss), net	17.2	(14.0)	2.0	(17.6)
Total comprehensive income	$ 24.2	$ 3.5	$ 10.3	$ 39.5