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Other assets impairments, restructuring and other items - Schedule of Other Assets Impairments, Restructuring and Other Items (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restructuring and Impairment Costs [Line Items]      
Impairments of long-lived tangible assets [1] $ 160 $ 416 $ 139
Contingent consideration (see note 20) 7 (81) 59
Restructuring 133 120 199
Other 41 24 26
Total $ 341 $ 479 $ 423
[1] Including impairments related to exit and disposal activities.