XML 62 R47.htm IDEA: XBRL DOCUMENT v3.21.2
DISPOSITION OF BUSINESSES Disposition of Businesses - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 07, 2021
May 12, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disclosure of subsidiaries [line items]            
Proceeds From Partial Disposition Of Subsidiaries To Non-Controlling Interest, Net Of Taxes     $ 0 $ 0 $ 0 $ 168
U.K. regulated distribution business            
Disclosure of subsidiaries [line items]            
Gain (Loss) on Disposition of Business   $ 195        
Increase (decrease) through transfer between revaluation surplus and retained earnings, equity   142        
Reclassification adjustments on exchange differences on translation, net of tax   12        
Proceeds from Disposition of Subsidiary   340        
U.K. regulated distribution business | Consortium            
Disclosure of subsidiaries [line items]            
Gain (Loss) on Disposition of Business   155        
Proceeds from Disposition of Subsidiary   $ 820        
Canadian district energy operations            
Disclosure of subsidiaries [line items]            
Gain (Loss) on Disposition of Business $ 295          
Increase (decrease) through transfer between revaluation surplus and retained earnings, equity 124          
Reclassification adjustments on exchange differences on translation, net of tax $ 9          
Disposal of ownership interest, percentage 25.00%          
Proceeds from Disposition of Subsidiary $ 450          
Canadian district energy operations | Consortium            
Disclosure of subsidiaries [line items]            
Gain (Loss) on Disposition of Business 1,170          
Proceeds from Disposition of Subsidiary $ 1,770