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INVESTMENT PROPERTIES
 12 Months Ended
Dec. 31, 2020
Investment property [abstract]  
INVESTMENT PROPERTIES INVESTMENT PROPERTIES
The following table presents the carrying amount for Brookfield Infrastructure’s investment properties:
US$ MILLIONS20202019
Balance at beginning of the year$416 $190 
Acquisitions through business combinations(1)
— 211 
Additions, net of disposals3 2 
Non-cash additions— 5 
Fair value adjustments68 — 
Foreign currency translation31 8 
Balance at end of the year$518 $416 
(1)See Note 6, Acquisition of Businesses, for additional information.
Investment properties are measured at fair value on a recurring basis and the effective date of revaluation is December 31, 2020 and 2019. The fair value of our partnership’s investment properties are determined by management of our partnership with due consideration given to other relevant market conditions. The following table summarizes the valuation techniques and significant inputs for Brookfield Infrastructure’s investment property. Our partnership has classified all assets below under level 3 of the fair value hierarchy:
Segment Valuation technique Significant unobservable inputs Range of inputs
TransportDirect Income Capitalization Capitalization Rate 
6% to 14%
DataDirect Income CapitalizationCapitalization Rate
6% to 8%
An increase in the capitalization rate would lead to a decrease in the fair value of investment property, with the opposite impact for a decrease in the capitalization rate.