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Divestitures and Held for Sale - Summary of Amounts Included in Discontinued Operations (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract] |  |  |
Net sales | $ 4,402.2 | $ 5,142.8 | $ 4,055.2
Cost of products sold | 2,812.5 | 3,316.5 | 2,627.3
Selling, general and administrative expenses | 836.8 | 971.6 | 621.3
Restructuring costs, net | 9.5 | 24.3 | 12.7
Impairment of goodwill, intangibles and other assets | 1,467.5 | 0.7 |
Operating income (loss) | (724.1) | 829.7 | 793.9
Non-operating expense (income) | (831.9) | (6.9) | (1.1)
Income before income taxes | 107.8 | 836.6 | 795.0
Income tax expense | 236.1 | 258.6 | 228.9
Net income (loss) | $ (128.3) | $ 578.0 | $ 566.1

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