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Document and Entity Information
 12 Months Ended
Dec. 31, 2018
shares
Document And Entity Information [Abstract]  
Entity Registrant Name Brookfield Infrastructure Partners L.P.
Entity Central Index Key 0001406234
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Document Type 20-F
Document Period End Date Dec. 31, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus FY
Amendment Flag false
Entity Common Stock, Shares Outstanding 277,347,890
Entity Well-known Seasoned Issuer Yes
Entity Current Reporting Status Yes
Entity Voluntary Filers No