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PROPERTY, PLANT AND EQUIPMENT - Cost Model (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Utilities    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost $ 6,504 $ 8,114
Transport    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost 7,557 7,548
Midstream    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost 14,300 4,007
Data    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost $ 7,694 $ 8,330