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Risks arising from Financial instruments - Schedule of Commodity Derivatives Outstanding (Detail) - Commodity price risk [member] - Commodity derivatives [member] - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding $ 2,274 $ 1,828
Aluminum swap [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding 1,241 1,184
Exchange traded sugar futures [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding 85 74
Natural gas and energy derivatives [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding 350 202
Corn swaps [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding 292 160
Exchange traded wheat futures [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding 129 83
Rice swaps [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding 85 76
Plastic derivatives [member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Commodity derivatives outstanding $ 93 $ 50