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SUBSEQUENT EVENTS (Details)
$ in Millions
Mar. 08, 2021
USD ($)
Mar. 02, 2021
Feb. 26, 2021
USD ($)
Feb. 02, 2021
USD ($)
transaction
Disposal of major subsidiary        
Disclosure of non-adjusting events after reporting period [line items]        
Number of transactions | transaction       2
North American residential energy infrastructure operation | Disposal of major subsidiary        
Disclosure of non-adjusting events after reporting period [line items]        
Total consideration       $ 4,100
Net proceeds from disposition       $ 1,000
U.S. gas pipeline | Disposal of major subsidiary        
Disclosure of non-adjusting events after reporting period [line items]        
Total consideration $ 410      
Disposition of interest 13.00%      
Jose Maria de Macedo de Eletricidade S.A. | Major business combination        
Disclosure of non-adjusting events after reporting period [line items]        
Proportion of ownership interest in subsidiary   31.00% 15.00%  
Assets recognized as of acquisition date     $ 500  
Liabilities recognized as of acquisition date     295  
Non-controlling interest in acquiree recognised at acquisition date     $ 140