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Schedule of changes in operating assets and liabilities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statement Of Cash Flows Complementary Information      
(Increase) Decrease in trade receivables and other receivables $ (41) $ 19 $ 65
Increase in inventories (40) (6) (20)
Increase in trade payables and other payables 43 3 46
Increase (Decrease) in salaries and social security payable  8 (1) (2)
Decrease in defined benefit plans (2) (2) (1)
(Decrease) Increase in tax payables  (5) (20) 4
Decrease in provisions (3) (5) (7)
Income tax paid (13) (5) (42)
(Payments) Proceeds from derivative financial instruments, net (12) (5) 9
Changes in operating assets and liabilities $ (65) $ (22) $ 52