CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 7.0	$ 17.5	$ 18.0	$ 8.3	$ 57.1
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation and amortization				32.6	28.0
Deferred income tax benefit				(5.6)	0.0
Amortization of debt issuance costs and loss on extinguishment of debt				0.9	1.2
Pension settlement charges				2.8	10.4
Inventory obsolescence				2.2	1.7
Gain on disposal of property, plant and equipment				(1.1)	0.0
Unrealized foreign currency (gains) losses				(0.2)	1.3
Stock-based compensation				8.8	7.7
Loss on fair value remeasurement of contingent consideration				12.4	0.0
Bad debt and customer claims				1.2	0.7
Other non-cash items				(1.5)	0.2
Changes in operating assets and liabilities:
Customer receivables				14.0	8.1
Inventories				(11.9)	(17.6)
Prepaid expenses and other assets				7.1	0.9
Accounts payable				(38.6)	(5.0)
Other liabilities				(12.0)	3.4
Cash provided by operating activities				19.4	98.1
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment				(28.1)	(32.4)
Purchase of business, net of cash acquired				0.0	(30.9)
Proceeds from sales of property and equipment				12.3	0.0
Other, net				0.3	0.0
Cash used in investing activities				(15.5)	(63.3)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from revolving credit facility				340.5	350.5
Repayment of revolving credit facility				(420.0)	(336.5)
Repayment of term loans				(62.2)	(12.8)
Capitalized debt issuance costs				(0.3)	(1.4)
Payment of dividends				(13.9)	(24.5)
Proceeds from the issuance of preferred stock, net				161.8	0.0
Payments of withholding taxes related to net share settlements of equity awards				(4.0)	(3.3)
Cash provided by (used in) financing activities				1.9	(28.0)
Effect of exchange rate changes on cash and cash equivalents				0.2	(0.1)
Net increase in cash and cash equivalents				6.0	6.7
Cash and cash equivalents at beginning of period			$ 1.6	8.5	1.6	$ 1.6
Cash and cash equivalents at end of period	$ 14.5	$ 8.3		$ 14.5	$ 8.3	$ 8.5