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Inventories (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of impairment loss and reversal of impairment loss [line items]    
Effect of provision (reversal) for net realizable value $ 1 $ (20)
Total 4,377 4,061
Gross carrying amount    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Finished products 2,795 2,712
Work in progress 820 647
Consumable inventory 857 882
Allowance to net realizable value    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Effect of provision (reversal) for net realizable value $ (95) $ (180)