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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, 2023
Dec. 31, 2022
Dec. 31, 2021
Restructuring and Impairment Costs [Line Items]      
Impairments of long-lived tangible assets [1] $ 28 $ 47 $ 160
Contingent consideration (see note 20) [2] 548 261 7
Restructuring 111 146 133
Other 30 57 41
Total $ 718 $ 512 $ 341
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] Other asset impairments, restructuring and other items    
[1] Including impairments related to exit and disposal activities.
[2] The contingent consideration presented in the tables above for the year ended December 31, 2022 have been revised as discussed in note 1b.