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Other assets impairments, restructuring and other items - Components of costs associated with restructuring plan including costs related to exit and disposal activities (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 10 $ 35 $ 66 $ 92
Employee termination [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 1 11 24 63
Other [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 9 $ 24 $ 42 $ 29