Discontinued Operations - Additional Disclosures (Details) - Consumer and Industrial Chemistry Technologies - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions		6 Months Ended
	Feb. 28, 2019	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 175.0
Inventory retained		$ 11.1
Working Adjustment Period 1
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contingent liabilities remaining period	90 days
Contingent liabilities remaining	$ 4.4
Working Adjustment Period 2-4
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contingent liabilities remaining	$ 13.1
Working Adjustment Period 2
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contingent liabilities remaining period	6 months
Working Adjustment Period 3
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contingent liabilities remaining period	12 months
Working Adjustment Period 4
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contingent liabilities remaining period	15 months