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Business Disposition - Schedule of Consolidated Statements of Operations (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2018
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |
Total | $ 0.4 | $ 38.0
Waste Management |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |
Net sales |  | 4.6
Operating loss |  | (0.4)
Interest expense, net |  | (0.3)
Loss before taxes |  | (0.7)
Income tax benefit |  | (0.1)
Net loss |  | (0.6)
Pre-tax gain on disposal |  | 58.4
Income tax expense (benefit) | (0.4) | 19.8
After-tax gain on disposal | 0.4 | 38.6
Total | $ 0.4 | 38.0
Net cash provided by operating activities |  | 2.3
Net cash used in investing activities |  | $ (0.1)

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