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Equity (Details 6) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]      
Profit (loss), attributable to owners of parent $ 24,884 $ 36,623 $ 19,875
Weighted average number of outstanding shares 13,022,289,244 13,044,201,261 13,044,201,261
Basic earnings per share $ 1.91 $ 2.81 $ 1.52
Basic and diluted earnings per share $ 3.82 $ 5.62 $ 3.04
Ordinary shares [member]      
IfrsStatementLineItems [Line Items]      
Profit (loss), attributable to owners of parent $ 14,221 $ 20,895 $ 11,339
Weighted average number of outstanding shares 7,442,231,382 7,442,231,382 7,442,231,382
Basic earnings per share $ 1.91 $ 2.81 $ 1.52
Basic and diluted earnings per share $ 3.82 $ 5.62 $ 3.04
Preference shares [member]      
IfrsStatementLineItems [Line Items]      
Profit (loss), attributable to owners of parent $ 10,663 $ 15,728 $ 8,536
Weighted average number of outstanding shares 5,580,057,862 5,601,969,879 5,601,969,879
Basic earnings per share $ 1.91 $ 2.81 $ 1.52
Basic and diluted earnings per share $ 3.82 $ 5.62 $ 3.04