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Impairment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
IfrsStatementLineItems [Line Items]        
Impairment (losses) reversals $ (401) $ (168) $ (404) $ (167)
Impairment loss reversal of impairment loss recognised in profit or loss net (401) (170) (403) (177)
Property, plant and equipment [member]        
IfrsStatementLineItems [Line Items]        
Impairment (losses) reversals (401) (84) (404) (83)
Intangible assets other than goodwill [member]        
IfrsStatementLineItems [Line Items]        
Impairment (losses) reversals       (1)
Non-current assets or disposal groups classified as held for sale [member]        
IfrsStatementLineItems [Line Items]        
Impairment (losses) reversals   (84)   (83)
Investments accounted for using equity method [member]        
IfrsStatementLineItems [Line Items]        
Impairment loss recognised in profit or loss, investment property   (2) 1 (10)
Losses [Member]        
IfrsStatementLineItems [Line Items]        
Impairment loss recognised in profit or loss, investment property (428) (208) (453) (218)
Reversals [Member]        
IfrsStatementLineItems [Line Items]        
Impairment loss recognised in profit or loss, investment property $ 27 $ 38 $ 50 $ 41