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INTANGIBLE ASSETS - Cash Generating Units (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Disclosure of information for cash-generating units [line items]    
Total $ 15,476 $ 11,822
North American Residential Energy Infrastructure Operation    
Disclosure of information for cash-generating units [line items]    
Total 3,394 1,674
Brazilian regulated gas transmission operation    
Disclosure of information for cash-generating units [line items]    
Total 3,015 2,816
Canadian diversified midstream operation    
Disclosure of information for cash-generating units [line items]    
Total 2,135 2,186
North American Rail Operation    
Disclosure of information for cash-generating units [line items]    
Total 1,757 1,762
European Residential Decarbonization Infrastructure Business    
Disclosure of information for cash-generating units [line items]    
Total 1,207 0
Peruvian toll roads    
Disclosure of information for cash-generating units [line items]    
Total 1,086 1,031
Indian Telecom Towers Operation    
Disclosure of information for cash-generating units [line items]    
Total 676 682
U.K. Telecom Towers Operation    
Disclosure of information for cash-generating units [line items]    
Total 565 537
U.K. port operation    
Disclosure of information for cash-generating units [line items]    
Total 271 258
Other    
Disclosure of information for cash-generating units [line items]    
Total 868 876
Brazilian Electricity Transmission Operation    
Disclosure of information for cash-generating units [line items]    
Total $ 502 $ 0