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OTHER ASSETS
 12 Months Ended
Dec. 31, 2021
Subclassifications of assets, liabilities and equities [abstract]  
OTHER ASSETS OTHER ASSETS
(US$ MILLIONS)20212020
Current  
Work in progress (1)
$427 $481 
Prepayments and other assets274 232 
Assets held for sale1 10 
Total current$702 $723 
Non-current  
Prepayments and other assets218 154 
Total non-current$218 $154 
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(1)See Note 15 for additional information.