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FAIR VALUE OF FINANCIAL INSTRUMENTS - Allocation of Financial Instruments - Additional Information (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |
Preferred shares | $ 20 | $ 20

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- Definition [Line Items] for Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] + References No definition available. + Details
Name: | bip_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems
Namespace Prefix: | bip_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Preferred Shares + References No definition available. + Details
Name: | bip_PreferredShares
Namespace Prefix: | bip_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant