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SUBSIDIARIES (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Australian rail operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 100.00% | 100.00%
U.K. regulated distribution operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 80.00% | 80.00%
Voting interest (%) | 80.00% | 80.00%
Brazilian regulated gas transmission operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 31.00% | 31.00%
Voting interest (%) | 92.00% | 92.00%
Colombian natural gas distribution operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 21.00% | 21.00%
Voting interest (%) | 75.00% | 75.00%
Brazilian electricity transmission operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 31.00% | 31.00%
Voting interest (%) | 100.00% | 100.00%
European residential infrastructure operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 14.00% | 13.00%
Voting interest (%) | 57.00% | 55.00%
North American residential decarbonization infrastructure business |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 26.00% | 26.00%
Voting interest (%) | 100.00% | 100.00%
North American residential energy infrastructure business, three |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 26.00% | 26.00%
Voting interest (%) | 100.00% | 100.00%
European residential decarbonization infrastructure business |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 25.00% | 25.00%
Voting interest (%) | 100.00% | 100.00%
Indian gas transmission operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 21.00% | 21.00%
Voting interest (%) | 100.00% | 100.00%
North American rail operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 9.00% | 9.00%
Voting interest (%) | 72.00% | 72.00%
U.K. ports operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 59.00% | 59.00%
Voting interest (%) | 100.00% | 100.00%
Australian port operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 27.00% | 27.00%
Voting interest (%) | 100.00% | 100.00%
Global intermodal logistics operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 27.00% | 28.00%
Voting interest (%) | 100.00% | 100.00%
North American gas storage - Warwick Gas Storage L.P. |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 25.00% | 25.00%
Voting interest (%) | 100.00% | 100.00%
North American gas storage operation - Lodi Gas Storage |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 40.00% | 40.00%
Voting interest (%) | 100.00% | 100.00%
North American gas storage operation - Rockpoint Gas Storage Partners L.P. |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 40.00% | 40.00%
Voting interest (%) | 100.00% | 100.00%
Canadian diversified midstream operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 56.00% | 56.00%
Voting interest (%) | 100.00% | 100.00%
Canadian natural gas gathering and processing operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 29.00% | 29.00%
Voting interest (%) | 100.00% | 100.00%
U.S. colocation data center operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 29.00% | 29.00%
Voting interest (%) | 100.00% | 100.00%
Australian data center operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 29.00% | 29.00%
Voting interest (%) | 100.00% | 100.00%
Indian telecom tower operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 16.00% | 16.00%
Voting interest (%) | 100.00% | 100.00%
U.K. wireless infrastructure operation |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 24.00% | 24.00%
Voting interest (%) | 100.00% | 100.00%
European hyperscale data center platform |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 18.00% | 19.00%
Voting interest (%) | 100.00% | 100.00%
Holding LP |  |
Disclosure of subsidiaries [line items] |  |
Proportion of ownership interest in subsidiary | 70.00% | 70.00%
Voting interest (%) | 100.00% | 100.00%

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