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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
 12 Months Ended
Dec. 31, 2021
Disclosure of analysis of other comprehensive income by item [abstract]  
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Attributable to Brookfield Infrastructure Partners L.P.
US$ MILLIONSRevaluation
Surplus		Foreign
Currency
Translation		Cash Flow
Hedges		Accumulated
Other
Comprehensive
Income
Balance at December 31, 2019$959 $(437)$1 $523 
Other comprehensive income118 (105)3 16 
Balance at December 31, 2020$1,077 $(542)$4 $539 
Other comprehensive income10 (15)— (5)
Other items(1)
(142)— — (142)
Balance at December 31, 2021$945 $(557)$4 $392 
(1)In relation to the disposition of our smart meters business in the U.K., $142 million of accumulated revaluation surplus (net of tax) was reclassified from accumulated other comprehensive income directly to retained earnings and recorded within Other items on the Consolidated Statements of Equity. Refer to Note 4, Disposition of Businesses, for further details.