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GOODWILL (Tables)
 12 Months Ended
Dec. 31, 2020
Intangible Assets [Abstract]  
Disclosure of reconciliation of changes in intangible assets and goodwill
The following table presents the carrying amount for our company’s goodwill:
As of
US$ MILLIONSDec. 31, 2020Dec. 31, 2019
Balance at beginning of the year$667 $691 
Foreign currency translation and other(139)(24)
Balance at end of the year$528 $667