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Equity - Cancellation of treasury shares (Details) - Cancellation Of Treasury Shares [Member] - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Sep. 16, 2022
Jul. 28, 2022
Feb. 24, 2022
Sep. 16, 2021
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]            
Number of shares held in treasury cancelled   220,150,800 133,418,347 152,016,372 353,569,147 152,016,372
Treasury shares carrying amount $ 2,401 $ 3,786 $ 2,830   $ 6,616 $ 2,401