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FINANCIAL ASSETS (Tables)
12 Months Ended
Dec. 31, 2020
Financial Instruments [Abstract]  
Disclosure of financial assets
US$ MILLIONS20202019
Current:  
Marketable securities$563 $142 
Foreign currency forward contracts34 112 
Cross currency interest rate swaps22 92 
Loans and receivables68 61 
Other11 25 
Total current$698 $432 
Non-current:  
Marketable securities$97 $71 
Foreign currency forward contracts81 29 
Cross currency interest rate swaps262 542 
Loans and receivables259 85 
Other10 36 
Total non-current$709 $763