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Segments - Non current assets by country (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Disclosure of geographical areas [table]    
Non-current assets $ 61,754 $ 71,213
Norway [member]    
Disclosure of geographical areas [table]    
Non-current assets 32,886 40,564
USA [member}    
Disclosure of geographical areas [table]    
Non-current assets 12,077 12,323
Brazil [member]    
Disclosure of geographical areas [table]    
Non-current assets 8,929 8,751
UK [member]    
Disclosure of geographical areas [table]    
Non-current assets 1,868 2,096
Azerbaijan [member]    
Disclosure of geographical areas [table]    
Non-current assets 1,609 1,654
Canada [member]    
Disclosure of geographical areas [table]    
Non-current assets 1,294 1,403
Angola [member]    
Disclosure of geographical areas [table]    
Non-current assets 932 948
Algeria [member]    
Disclosure of geographical areas [table]    
Non-current assets 656 708
Argentina [member]    
Disclosure of geographical areas [table]    
Non-current assets 550 474
Denmark [member]    
Disclosure of geographical areas [table]    
Non-current assets 486 536
Other [member]    
Disclosure of geographical areas [table]    
Non-current assets $ 467 $ 1,757