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Other assets impairments, restructuring and other items - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Restructuring and Impairment Costs [Line Items]        
Impairments of property, plant and equipment $ 69 $ 11 $ 668 $ 21
Business combination contingent consideration arrangements change in amount of contingent consideration liability [1] 192 78 271 113
Restructuring costs $ 18 $ 10 $ 31 $ 66
[1] The contingent consideration presented in the tables above for the three and six months ended June 30, 2023 have been revised as discussed in note 1c.