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CAPITAL MANAGEMENT - Invested Capital (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of objectives, policies and processes for managing capital [line items]        
Total partnership capital $ 26,391 $ 21,673 $ 22,177 $ 14,668
Non-controlling interest - in operating subsidiaries (15,658) (13,954)    
Deficit 2,520 2,752    
Accumulated other comprehensive income (543) (731)    
Ownership changes (515) (527)    
Invested Capital $ 12,195 $ 9,213 $ 9,009  
Bottom of range        
Disclosure of objectives, policies and processes for managing capital [line items]        
Targeted returns on invested capital 12.00%      
Top of range        
Disclosure of objectives, policies and processes for managing capital [line items]        
Targeted returns on invested capital 15.00%