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REVENUES (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disclosure of operating segments [line items]        
Revenue $ 2,663 $ 1,946 $ 5,346 $ 4,142
Transport        
Disclosure of operating segments [line items]        
Revenue 871 769 1,719 1,665
Utilities        
Disclosure of operating segments [line items]        
Revenue 1,229 953 2,320 2,002
Data Infrastructure        
Disclosure of operating segments [line items]        
Revenue 385 87 754 175
Midstream        
Disclosure of operating segments [line items]        
Revenue $ 178 $ 137 $ 553 $ 300