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SEGMENT INFORMATION - Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Disclosure of operating segments [line items]    
Total assets $ 73,899 $ 73,961
Material reconciling items | Associates    
Disclosure of operating segments [line items]    
Total assets 5,529 4,825
Material reconciling items | Non-controlling interests    
Disclosure of operating segments [line items]    
Total assets 42,466 42,415
Material reconciling items | Working capital adjustment and other    
Disclosure of operating segments [line items]    
Total assets 8,461 9,274
Operating segments    
Disclosure of operating segments [line items]    
Total assets 28,501 27,097
Operating segments | Utilities    
Disclosure of operating segments [line items]    
Total assets 7,640 6,184
Operating segments | Transport    
Disclosure of operating segments [line items]    
Total assets 8,451 8,601
Operating segments | Midstream    
Disclosure of operating segments [line items]    
Total assets 10,310 10,378
Operating segments | Data Infrastructure    
Disclosure of operating segments [line items]    
Total assets 3,331 3,405
Operating segments | Corporate    
Disclosure of operating segments [line items]    
Total assets $ (1,231) $ (1,471)