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PARTNERSHIP CAPITAL - Capital Categories (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 21, 2022 | Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ 34,234 |  | $ 29,775 |  | $ 35,540 |  | $ 29,853 |  | $ 29,853
Unit issuance |  | 3 | [1] | 3 | [2] | 145 | [3] | 5 | [4] |
Units repurchased and cancelled |  |  |  | (29) | [2] | (113) | [3] | (29) | [4] |
Ending balance |  | $ 32,523 |  | 29,649 |  | $ 32,523 |  | $ 29,649 |  | $ 35,540
Limited partners’ capital | Non-controlling interest – BIPC exchangeable shares and class A.2 exchangeable shares | Exchangeable share |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Opening balance (in shares) |  |  |  |  |  | 119,982,167 |  |  |  |
Ending balance (in shares) |  | 123,005,386 |  |  |  | 123,005,386 |  |  |  | 119,982,167
Limited partners’ capital | Non-controlling interest – BIPC exchangeable shares and class A.2 exchangeable shares | Class exchangeable shares |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Opening balance (in shares) |  |  |  |  |  | 13,012,789 |  |  |  |
Ending balance (in shares) |  | 13,012,789 |  |  |  | 13,012,789 |  |  |  | 13,012,789
Perpetual subordinated notes |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Opening balance (in shares) |  |  |  |  |  | 293,000,000 |  | 293,000,000 |  | 293,000,000
Number of shares issued (in shares) | 293,000,000 |  |  |  |  |  |  |  |  |
Ending balance (in shares) |  | 293,000,000 |  |  |  | 293,000,000 |  |  |  | 293,000,000
Preferred unitholders capital |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  | $ 729 |  | $ 918 |  | $ 918
Opening balance (in shares) |  |  |  |  |  | 33,922,785 |  | 43,901,312 |  | 43,901,312
Units repurchased and cancelled |  |  |  |  |  | $ 0 |  |  |  | $ (189)
Units repurchased and cancelled (in shares) |  |  |  |  |  | 0 |  |  |  | (9,978,527)
Ending balance |  | $ 729 |  |  |  | $ 729 |  |  |  | $ 729
Ending balance (in shares) |  | 33,922,785 |  |  |  | 33,922,785 |  |  |  | 33,922,785
General partner | Limited partners’ capital |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  | $ 19 |  | $ 19 |  | $ 19
Opening balance (in shares) |  |  |  |  |  | 2,400,631 |  | 2,400,631 |  | 2,400,631
Ending balance |  | $ 19 |  |  |  | $ 19 |  |  |  | $ 19
Ending balance (in shares) |  | 2,400,631 |  |  |  | 2,400,631 |  |  |  | 2,400,631
Limited Partners | Limited partners’ capital |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  | $ 6,199 |  | $ 6,210 |  | $ 6,210
Opening balance (in shares) |  |  |  |  |  | 460,488,788 |  | 461,855,350 |  | 461,855,350
Unit issuance |  |  |  |  |  | $ 6 |  |  |  | $ 11
Number of shares issued (in shares) |  |  |  |  |  | 164,207 |  |  |  | 330,047
Units repurchased and cancelled |  |  |  |  |  | $ (40) |  |  |  | $ (25)
Units repurchased and cancelled (in shares) |  |  |  |  |  | (2,982,920) |  |  |  | (1,877,183)
Conversions |  |  |  |  |  | $ 0 |  |  |  | $ 3
Conversions (in shares) |  |  |  |  |  | 38,379 |  |  |  | 180,574
Ending balance |  | $ 6,165 |  |  |  | $ 6,165 |  |  |  | $ 6,199
Ending balance (in shares) |  | 457,708,454 |  |  |  | 457,708,454 |  |  |  | 460,488,788
Redeemable Partnership Units held by Brookfield |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ 1,917 |  | 1,876 |  | $ 2,017 |  | $ 1,926 |  | $ 1,926
Ending balance |  | 1,834 |  | $ 1,830 |  | 1,834 |  | 1,830 |  | 2,017
Redeemable Partnership Units held by Brookfield | Limited partners’ capital |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  | $ 2,628 |  | $ 2,628 |  | $ 2,628
Opening balance (in shares) |  |  |  |  |  | 190,299,956 |  | 190,299,956 |  | 190,299,956
Ending balance |  | $ 2,628 |  |  |  | $ 2,628 |  |  |  | $ 2,628
Ending balance (in shares) |  | 190,299,956 |  |  |  | 190,299,956 |  |  |  | 190,299,956
BIPC exchangeable shares and class A.2 exchangeable shares | Limited partners’ capital |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  | $ 2,554 |  | $ 2,514 |  | $ 2,514
Opening balance (in shares) |  |  |  |  |  | 132,994,956 |  | 132,051,909 |  | 132,051,909
Unit issuance |  |  |  |  |  | $ 139 |  |  |  | $ 38
Number of shares issued (in shares) |  |  |  |  |  | 2,982,920 |  |  |  | 833,272
Conversions |  |  |  |  |  | $ 1 |  |  |  | $ 2
Conversions (in shares) |  |  |  |  |  | 40,299 |  |  |  | 109,775
Ending balance |  | $ 2,694 |  |  |  | $ 2,694 |  |  |  | $ 2,554
Ending balance (in shares) |  | 136,018,175 |  |  |  | 136,018,175 |  |  |  | 132,994,956
Non-controlling interest - exchange LP units, equity | Limited partners’ capital |  |  |  |  |  |  |  |  |  |
Schedule of Partnership Units [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  | $ 384 |  | $ 388 |  | $ 388
Opening balance (in shares) |  |  |  |  |  | 5,447,803 |  | 5,738,152 |  | 5,738,152
Conversions |  |  |  |  |  | $ (1) |  | $ (1) |  | $ (4)
Conversions (in shares) |  |  |  |  |  | (78,678) |  |  |  | (290,349)
Ending balance |  | $ 383 |  |  |  | $ 383 |  |  |  | $ 384
Ending balance (in shares) |  | 5,369,125 |  |  |  | 5,369,125 |  |  |  | 5,447,803
[1] | Refer to Note 16, Partnership Capital.
[2] | Refer to Note 16, Partnership Capital.
[3] | Refer to Note 16, Partnership Capital.
[4] | Refer to Note 16, Partnership Capital.

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