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FINANCIAL ASSETS (Tables)
12 Months Ended
Dec. 31, 2021
Financial Instruments [Abstract]  
Disclosure of financial assets
US$ MILLIONS20212020
Current:  
Marketable securities$518 $563 
Foreign currency forward contracts79 34 
Cross currency interest rate swaps58 22 
Loans and receivables47 68 
Other38 11 
Total current$740 $698 
Non-current:  
Marketable securities$168 $97 
Foreign currency forward contracts24 81 
Cross currency interest rate swaps202 262 
Loans and receivables63 259 
Other79 10 
Total non-current$536 $709