CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2018
Payments for Repurchase of Common Stock			$ 15.0	$ 0.0
Impaired Assets to be Disposed of by Method Other than Sale, Amount of Impairment Loss			1.7	0.0
Increase (Decrease) in Other Operating Assets and Liabilities, Net			0.4	4.3
Net Cash Provided by (Used in) Investing Activities, Total			(14.6)	(35.9)
Net Cash Provided by (Used in) Financing Activities, Total			79.6	5.0
Adjustments to reconcile net (loss) earnings to cash from operating activities:
Depreciation and amortization			30.5	27.0
Stock-based compensation			7.6	14.0
Non-cash interest expense and amortization of debt issuance costs			4.3	4.1
Deferred income taxes			(1.0)	(0.7)
Other, net			(2.2)	1.1
Proceeds from the sale of business					$ 135.1
Changes in assets and liabilities (excluding effects of foreign exchange):
Receivables, net			58.1	5.7
Inventories, net			(22.1)	(17.7)
Prepaid and other current assets			(2.6)	(3.0)
Accounts payable			(10.9)	(9.1)
Accrued compensation and employee benefits			(10.2)	(11.2)
Other accrued expenses			3.6	1.0
Increase Decrease Accrued Taxes, Net			(2.8)	0.8
Other non-current assets and non-current liabilities			(0.4)	(4.3)
Net Cash Provided by (Used in) Operating Activities			25.0	10.9
Investing Activities
Additions to property, plant, and equipment			(14.6)	(24.5)
Acquisitions of business (net of cash acquired)			0.0	(11.4)
Proceeds from the sale of business					135.1
Financing Activities
Borrowings under revolving credit facility			100.0	10.0
Tax on restricted and performance stock unit vesting			(6.0)	(5.5)
Payments of finance lease obligations			(0.9)	(0.9)
Payment of consideration owed for acquisitions			0.0	(0.2)
Net proceeds from exercise of stock-based awards			1.5	1.6
Effect of Exchange Rate on Cash and Cash Equivalents [Abstract]
Effect of exchange rate changes on cash and cash equivalents			(0.1)	0.1
Net (loss) earnings	$ (19.5)	$ 5.9	(28.6)	3.2
Net increase (decrease) in cash and cash equivalents			89.9	(19.9)
Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations, Beginning Balance			78.4	73.5
Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations	$ 168.3	$ 53.6	168.3	53.6	$ 73.5
Supplemental information - cash paid for:
Income taxes			8.2	6.9
Interest			4.1	3.8
Payments for Repurchase of Common Stock			$ 15.0	$ 0.0