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Business Disposition - Schedule of Consolidated Statements of Operations (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |  |
Total | $ 0.7 | $ 1.7 | $ 38.7 | $ (108.2)
Waste Management |  |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |  |
Net sales |  | 18.4 | 4.6 | 60.4
Operating income (loss) |  | 4.0 | (0.4) | (167.0)
Termination fee |  |  |  | 4.0
Other expense, net |  | (0.5) |  | (8.2)
Interest expense, net |  | (1.2) | (0.3) | (3.6)
Loss before taxes |  | 2.3 | (0.7) | (174.8)
Income tax expense (benefit) |  | 0.6 | (0.1) | (66.6)
Net income (loss) |  | 1.7 | (0.6) | (108.2)
Pre-tax gain on disposal |  |  | 58.4 |
Income tax expense (benefit) | (0.7) |  | 19.1 |
After-tax gain on disposal | 0.7 |  | 39.3 |
Total | $ 0.7 | $ 1.7 | 38.7 | (108.2)
Net cash provided by operating activities |  |  | 2.3 | 15.7
Net cash used in investing activities |  |  | $ (0.1) | $ (2.9)

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