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SEGMENT INFORMATION (Operating Segments) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of operating segments [line items] |  |  |
Revenues | $ 8,885,000,000 | $ 6,597,000,000 | $ 4,652,000,000
Costs attributed to revenues | (4,843,000,000) | (3,395,000,000) | (2,208,000,000)
General and administrative costs | (312,000,000) | (279,000,000) | (223,000,000)
Other (expense) income | (87,000,000) | (28,000,000) | (34,000,000)
Interest expense | (1,179,000,000) | (904,000,000) | (555,000,000)
Depreciation and amortization | (1,705,000,000) | (1,214,000,000) | (801,000,000)
Deferred taxes | (54,000,000) | (28,000,000) | (46,000,000)
Mark-to-market on hedging items and other | 68,000,000 | (323,000,000) | (175,000,000)
Gain on sale of associate, net of tax |  |  | 209,000,000
Share of earnings from associates | 131,000,000 | 224,000,000 | (13,000,000)
Net income attributable to non-controlling interest | (510,000,000) | (417,000,000) | (396,000,000)
Net income (loss) attributable to partnership | 394,000,000 | 233,000,000 | 410,000,000
Utilities |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 4,083,000,000 | 4,265,000,000 | 2,811,000,000
Transport |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 3,449,000,000 | 1,617,000,000 | 1,629,000,000
Midstream |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 643,000,000 | 399,000,000 | 212,000,000
Data |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 710,000,000 | 316,000,000 | 0
Operating segments |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 4,098,000,000 | 3,873,000,000 | 3,505,000,000
Costs attributed to revenues | (1,793,000,000) | (1,695,000,000) | (1,669,000,000)
General and administrative costs | (312,000,000) | (279,000,000) | (223,000,000)
Adjusted EBITDA | 1,993,000,000 | 1,899,000,000 | 1,613,000,000
Other (expense) income | 84,000,000 | 70,000,000 | 62,000,000
Interest expense | (623,000,000) | (585,000,000) | (444,000,000)
FFO | 1,454,000,000 | 1,384,000,000 | 1,231,000,000
Depreciation and amortization | (1,034,000,000) | (895,000,000) | (758,000,000)
Deferred taxes | 3,000,000 | (77,000,000) | 12,000,000
Mark-to-market on hedging items and other | (29,000,000) | (179,000,000) | (284,000,000)
Gain on sale of associate, net of tax |  |  | 209,000,000
Share of earnings from associates | 0 | 0 | 0
Net income attributable to non-controlling interest | 0 | 0 | 0
Net income (loss) attributable to partnership | 394,000,000 | 233,000,000 | 410,000,000
Operating segments | Utilities |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 1,434,000,000 | 1,432,000,000 | 1,070,000,000
Costs attributed to revenues | (580,000,000) | (582,000,000) | (371,000,000)
General and administrative costs | 0 | 0 | 0
Adjusted EBITDA | 854,000,000 | 850,000,000 | 699,000,000
Other (expense) income | (43,000,000) | (31,000,000) | (25,000,000)
Interest expense | (152,000,000) | (147,000,000) | (103,000,000)
FFO | 659,000,000 | 672,000,000 | 571,000,000
Depreciation and amortization | (268,000,000) | (264,000,000) | (211,000,000)
Deferred taxes | (80,000,000) | (41,000,000) | (34,000,000)
Mark-to-market on hedging items and other | (91,000,000) | (64,000,000) | (99,000,000)
Gain on sale of associate, net of tax |  |  | 0
Share of earnings from associates | 0 | 0 | 0
Net income attributable to non-controlling interest | 0 | 0 | 0
Net income (loss) attributable to partnership | 220,000,000 | 303,000,000 | 227,000,000
Operating segments | Transport |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 1,573,000,000 | 1,614,000,000 | 1,831,000,000
Costs attributed to revenues | (767,000,000) | (781,000,000) | (1,044,000,000)
General and administrative costs | 0 | 0 | 0
Adjusted EBITDA | 806,000,000 | 833,000,000 | 787,000,000
Other (expense) income | (2,000,000) | (3,000,000) | 2,000,000
Interest expense | (214,000,000) | (227,000,000) | (203,000,000)
FFO | 590,000,000 | 603,000,000 | 586,000,000
Depreciation and amortization | (419,000,000) | (370,000,000) | (361,000,000)
Deferred taxes | 30,000,000 | 25,000,000 | 38,000,000
Mark-to-market on hedging items and other | (116,000,000) | (168,000,000) | (215,000,000)
Gain on sale of associate, net of tax |  |  | 0
Share of earnings from associates | 0 | 0 | 0
Net income attributable to non-controlling interest | 0 | 0 | 0
Net income (loss) attributable to partnership | 85,000,000 | 90,000,000 | 48,000,000
Operating segments | Midstream |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 572,000,000 | 491,000,000 | 434,000,000
Costs attributed to revenues | (193,000,000) | (171,000,000) | (177,000,000)
General and administrative costs | 0 | 0 | 0
Adjusted EBITDA | 379,000,000 | 320,000,000 | 257,000,000
Other (expense) income | 3,000,000 | 10,000,000 | 17,000,000
Interest expense | (93,000,000) | (86,000,000) | (68,000,000)
FFO | 289,000,000 | 244,000,000 | 206,000,000
Depreciation and amortization | (153,000,000) | (131,000,000) | (114,000,000)
Deferred taxes | (10,000,000) | (55,000,000) | (9,000,000)
Mark-to-market on hedging items and other | (31,000,000) | 132,000,000 | (49,000,000)
Gain on sale of associate, net of tax |  |  | 0
Share of earnings from associates | 0 | 0 | 0
Net income attributable to non-controlling interest | 0 | 0 | 0
Net income (loss) attributable to partnership | 95,000,000 | 190,000,000 | 34,000,000
Operating segments | Data |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 519,000,000 | 336,000,000 | 170,000,000
Costs attributed to revenues | (253,000,000) | (161,000,000) | (77,000,000)
General and administrative costs | 0 | 0 | 0
Adjusted EBITDA | 266,000,000 | 175,000,000 | 93,000,000
Other (expense) income | (1,000,000) | 3,000,000 | (4,000,000)
Interest expense | (69,000,000) | (42,000,000) | (12,000,000)
FFO | 196,000,000 | 136,000,000 | 77,000,000
Depreciation and amortization | (194,000,000) | (129,000,000) | (72,000,000)
Deferred taxes | 74,000,000 | 10,000,000 | 7,000,000
Mark-to-market on hedging items and other | (44,000,000) | (30,000,000) | (6,000,000)
Gain on sale of associate, net of tax |  |  | 0
Share of earnings from associates | 0 | 0 | 0
Net income attributable to non-controlling interest | 0 | 0 | 0
Net income (loss) attributable to partnership | 32,000,000 | (13,000,000) | 6,000,000
Operating segments | Corporate |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 0 | 0 | 0
Costs attributed to revenues | 0 | 0 | 0
General and administrative costs | (312,000,000) | (279,000,000) | (223,000,000)
Adjusted EBITDA | (312,000,000) | (279,000,000) | (223,000,000)
Other (expense) income | 127,000,000 | 91,000,000 | 72,000,000
Interest expense | (95,000,000) | (83,000,000) | (58,000,000)
FFO | (280,000,000) | (271,000,000) | (209,000,000)
Depreciation and amortization | 0 | (1,000,000) | 0
Deferred taxes | (11,000,000) | (16,000,000) | 10,000,000
Mark-to-market on hedging items and other | 253,000,000 | (49,000,000) | 85,000,000
Gain on sale of associate, net of tax |  |  | 209,000,000
Share of earnings from associates | 0 | 0 | 0
Net income attributable to non-controlling interest | 0 | 0 | 0
Net income (loss) attributable to partnership | (38,000,000) | (337,000,000) | 95,000,000
Contribution from investments in associates |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | (1,379,000,000) | (1,424,000,000) | (1,524,000,000)
Costs attributed to revenues | 600,000,000 | 649,000,000 | 833,000,000
General and administrative costs | 0 | 0 | 0
Adjusted EBITDA | (779,000,000) | (775,000,000) | (691,000,000)
Other (expense) income | 17,000,000 | 11,000,000 | 11,000,000
Interest expense | 177,000,000 | 173,000,000 | 134,000,000
FFO | (585,000,000) | (591,000,000) | (546,000,000)
Depreciation and amortization | 471,000,000 | 399,000,000 | 370,000,000
Deferred taxes | (65,000,000) | 52,000,000 | (44,000,000)
Mark-to-market on hedging items and other | 48,000,000 | (84,000,000) | 233,000,000
Gain on sale of associate, net of tax |  |  | 0
Share of earnings from associates | 131,000,000 | 224,000,000 | (13,000,000)
Net income attributable to non-controlling interest | 0 | 0 | 0
Net income (loss) attributable to partnership | 0 | 0 | 0
Attributable to non- controlling interest |  |  |
Disclosure of operating segments [line items] |  |  |
Revenues | 6,166,000,000 | 4,148,000,000 | 2,671,000,000
Costs attributed to revenues | (3,650,000,000) | (2,349,000,000) | (1,372,000,000)
General and administrative costs | 0 | 0 | 0
Adjusted EBITDA | 2,516,000,000 | 1,799,000,000 | 1,299,000,000
Other (expense) income | (188,000,000) | (109,000,000) | (107,000,000)
Interest expense | (733,000,000) | (492,000,000) | (245,000,000)
FFO | 1,595,000,000 | 1,198,000,000 | 947,000,000
Depreciation and amortization | (1,142,000,000) | (718,000,000) | (413,000,000)
Deferred taxes | 8,000,000 | (3,000,000) | (14,000,000)
Mark-to-market on hedging items and other | 49,000,000 | (60,000,000) | (124,000,000)
Gain on sale of associate, net of tax |  |  | 0
Share of earnings from associates | 0 | 0 | 0
Net income attributable to non-controlling interest | (510,000,000) | (417,000,000) | (396,000,000)
Net income (loss) attributable to partnership | $ 0 | $ 0 | $ 0

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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Name: | ifrs-full_SegmentsAxis=bip_TransportMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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Name: | ifrs-full_SegmentsAxis=bip_MidstreamMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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Namespace Prefix: |
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Period Type: |

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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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