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GOODWILL - Cash Generating Units (Details) - Goodwill - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of information for cash-generating units [line items]      
Goodwill $ 8,789 $ 8,979 $ 6,634
North American rail operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 2,094 2,105  
Canadian diversified midstream operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 1,984 2,125  
North American residential energy infrastructure operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 1,463 1,356  
Western Canadian natural gas gathering and processing operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 710 762  
Colombian natural gas distribution operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 367 433  
Brazilian regulated gas transmission operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 488 456  
U.S. data center operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 503 503  
U.K. telecom towers operation      
Disclosure of information for cash-generating units [line items]      
Goodwill 332 341  
Other      
Disclosure of information for cash-generating units [line items]      
Goodwill $ 848 $ 898