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Revenue Recognition - Impact of Adoption of Topic 606 (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ 279.4	$ 269.4	$ 291.0	$ 249.7	$ 247.6	$ 248.7	$ 224.4	$ 177.8	$ 1,089.5	$ 898.5	$ 707.9
Cost of sales									807.4	677.3	524.5
Gross profit	$ 72.0	$ 69.0	$ 79.2	$ 61.9	$ 61.6	$ 61.3	$ 54.7	$ 43.6	282.1	221.2	183.4
Balances Without Adoption of Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									1,104.8
Cost of sales									822.7
Gross profit									282.1
Effect of Change
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									(15.3)
Cost of sales									(15.3)
Gross profit									$ 0.0
Environmental Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Percent Change in Net Sales Due to Adoption of Topic 606									1.00%
Net sales									$ 863.5	$ 692.6	$ 490.7

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Percent change in net sales due to the adoption of Topic 606.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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