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Lease liability and Right-of-use assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Movements of the right-of-use assets [roll forward]    
Right-of-use assets at beginning of period $ 1,561 $ 1,676
Impact of business combinations 12  
Additions to right-of-use assets 247 321
Depreciation charge (300) (318)
Lease contract terminations, right-of-use assets (34) (66)
Impairment loss recognised in profit or loss, right of use assets (3)  
Increase decrease through net exchange differences, right-of-use assets (52) (52)
Right-of-use assets at end of period $ 1,431 $ 1,561