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Other assets impairments, restructuring and other items - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Restructuring and Impairment Costs [Line Items] |  |  |  |  |
Impairments of long-lived tangible assets | [1] | $ 75 | $ 20 |  |
Impairments of property, plant and equipment |  |  | 20 |  |
Business combination contingent consideration arrangements change in amount of contingent consideration liability |  | 6 | (71) |  |
Restructuring costs |  | 39 | 32 |  |
Recall and inventory reserves cost |  |  |  |  | $ 54
Scenario, Forecast [Member] |  |  |  |  |
Restructuring and Impairment Costs [Line Items] |  |  |  |  |
Expected revenue from Florida manufacturing plant in 2020 |  |  |  | $ 230 |
Restructuring Cost [Member] |  |  |  |  |
Restructuring and Impairment Costs [Line Items] |  |  |  |  |
Business combination contingent consideration arrangements change in amount of contingent consideration liability |  | $ 6 | $ 71 |  |
[1] | Including impairments related to exit and disposal activities

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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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