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Other assets impairments, restructuring and other items - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) Positions | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Restructuring and Impairment Costs [Line Items] |  |  |
Impairments of property, plant and equipment | $ 139 | $ 500 | $ 544
Business combination contingent consideration arrangements change in amount of contingent consideration liability | 59 | 57 | 154
Restructuring costs | $ 199 | $ 488 | $ 535
Number of positions eliminated | Positions | 13,000 |  |
Recall and inventory reserves cost | $ 54 |  |
Expected revenue from Florida manufacturing plant in 2020 | $ 230 |  |

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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479 + Details
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