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FINANCIAL LIABILITIES
 12 Months Ended
Dec. 31, 2018
Financial Instruments [Abstract]  
Disclosure of financial liabilities
FINANCIAL LIABILITIES
US$ MILLIONS
 
2018
 
2017
Current:
 
 
 
 
Foreign currency forward contracts
 
$
16

 
$
150

Other financial liabilities
 
108

 
87

Total current financial liabilities
 
$
124

 
$
237

 
 
 
 
 
Non-current:
 
 
 
 
Deferred consideration(1)
 
$
953

 
$
916

Interest rate swaps
 
100

 
9

Inflation swaps
 
78

 
84

Other financial liabilities
 
25

 
67

Total non-current financial liabilities
 
$
1,156

 
$
1,076

 
(1)
The deferred consideration is related to the acquisitions completed during 2017 and 2018. See Note 6, Acquisition of Businesses for further details.