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Employee benefits (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Employee Benefits      
Salaries, accrued vacations and related charges $ (3,006) $ (2,665) $ (3,064)
Variable compensation program - PPP [1] (547) (469) (439)
Profit sharing [1] (131) (125) (7)
Management fees and charges (14) (15) (14)
Total $ (3,698) $ (3,274) $ (3,524)
[1] It includes reversals of provisions related to previous year.