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INTANGIBLE ASSETS INTANGIBLE ASSETS - Additional Information (Details) - Australian regulated terminal	6 Months Ended
	Jun. 30, 2020
Disclosure of detailed information about intangible assets [line items]
Percent Of Take Or Pay Contracts	100.00%
Period Of Additional Extension Take Or Pay Contracts	49

X

- Definition

Percent Of Take Or Pay Contracts

+ References

No definition available.

+ Details

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Namespace Prefix:	bip_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Period Of Additional Extension Take Or Pay Contracts

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No definition available.

+ Details

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Namespace Prefix:	bip_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis=bip_AustralianRegulatedTerminalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: