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FINANCIAL INSTRUMENTS - Cash and Equivalents (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]      
Cash and equivalents $ 5,280 $ 5,188 $ 3,314
Financial assets at amortised cost, category [member]      
Disclosure of detailed information about financial instruments [line items]      
Cash deposits 3,691 3,713  
Term deposits 1,582 1,469  
Money market investments 7 6  
Cash and equivalents 5,280 5,188  
Financial assets at amortised cost, category [member] | Cash held in subsidiaries with restrictions      
Disclosure of detailed information about financial instruments [line items]      
Cash and equivalents $ 0 $ 0