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Lease liability and Right-of-use assets (Details 1) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets $ 1,431 $ 1,561 $ 1,676
Depreciation charge (300) (318)  
Land [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets 505 522  
Depreciation charge (16) (11)  
Buildings [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets 745 866  
Depreciation charge (177) (192)  
Vehicles [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets 117 136  
Depreciation charge (96) (105)  
Machinery & equipment and other assets      
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets 64 37  
Depreciation charge $ (11) $ (10)