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INTEREST EXPENSE
12 Months Ended
Dec. 31, 2018
Analysis of income and expense [abstract]  
INTEREST EXPENSE
INTEREST EXPENSE
US$ MILLIONS
 
2018
 
2017
 
2016
Interest on corporate facility
 
$
4

 
$
12

 
$
12

Interest on corporate debt
 
56

 
51

 
39

Interest on non-recourse borrowings
 
483

 
361

 
338

Other financing fees
 
12

 
4

 
3

 
 
$
555

 
$
428

 
$
392