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INTANGIBLE ASSETS - Cash Generating Units (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure of information for cash-generating units [line items]    
Total $ 14,692 $ 15,765
North American residential infrastructure operation    
Disclosure of information for cash-generating units [line items]    
Total 2,852 2,985
Brazilian regulated gas transmission operation    
Disclosure of information for cash-generating units [line items]    
Total 2,661 2,510
Canadian diversified midstream operation    
Disclosure of information for cash-generating units [line items]    
Total 1,485 1,624
North American rail operations    
Disclosure of information for cash-generating units [line items]    
Total 1,320 1,381
Brazilian electricity transmission operation    
Disclosure of information for cash-generating units [line items]    
Total 1,273 1,152
European residential infrastructure business    
Disclosure of information for cash-generating units [line items]    
Total 1,250 1,295
Indian telecom tower operation    
Disclosure of information for cash-generating units [line items]    
Total 1,023 1,103
U.S. bulk fiber network    
Disclosure of information for cash-generating units [line items]    
Total 717 1,516
Global intermodal logistics operation    
Disclosure of information for cash-generating units [line items]    
Total 560 570
U.K. wireless infrastructure operation    
Disclosure of information for cash-generating units [line items]    
Total 560 585
North American retail colocation data center operation    
Disclosure of information for cash-generating units [line items]    
Total 411 454
Other    
Disclosure of information for cash-generating units [line items]    
Total $ 580 $ 590