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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)
12 Months Ended
Dec. 31, 2020
Financial Instruments [Abstract]  
Notional amount of derivative positions
The aggregate notional amount of our company’s derivative positions at December 31, 2020 and 2019 were as follows:
As of December 31,
US$ MILLIONSNote20202019
Interest rate swaps and other(a)$447 $434 
 $447 $434 
Disclosure of change in fair values of derivative positions
The following table presents the change in fair values of our company’s derivative positions during the years ended December 31, 2020 and 2019:
US$ MILLIONSUnrealized Gains
on Derivative
Financial Assets
Unrealized Losses
on Derivative
Financial Liabilities
Net Change During 2020Net Change During 2019
Interest rate swaps and other$9 $ $9 $10 
$9 $ $9 $10 
Disclosure of information about terms and conditions of hedging instruments
The following table presents the notional amounts underlying our company’s derivative instruments by term to maturity as at December 31, 2020 and the comparative notional amounts at December 31, 2019, for both derivatives that are classified as fair value through profit or loss and derivatives that qualify for hedge accounting:
 20202019
US$ MILLIONS< 1 year1 to 5 years> 5 yearsTotal Notional
Amount
Total Notional
Amount
Fair value through profit or loss     
Inflation rate swaps and other$ $172 $ $172 $167 
$ $172 $ $172 $167 
Elected for hedge accounting
Interest rate swaps and other
$ $275 $ $275 $267 
$ $275 $ $275 $267 
Disclosure of derivatives elected for hedge accounting Changes in the fair value of the effective portion of the hedges are recorded in either other comprehensive income or net income, depending on the hedge classification, whereas changes in the fair value of the ineffective portion of the hedge are recorded in net income:
 20202019
AS AT AND FOR THE YEARS ENDED (US$ MILLIONS)NotionalEffective
Portion
Ineffective
Portion
NotionalEffective
Portion
Ineffective
Portion
Cash flow hedges$275 $5 $ $267 $$—