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CAPITAL MANAGEMENT - Invested Capital (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Disclosure of objectives, policies and processes for managing capital [line items]                  
Issuance of perpetual subordinated notes   $ 0 $ 0 $ 0 $ 293 [1]        
Total partnership capital   28,623 26,039 28,623 26,039 $ 28,312 $ 25,554 $ 26,975 $ 26,391
Non-controlling interest - in operating subsidiaries   (18,640)   (18,640)     (15,320)    
Deficit   3,746   3,746     3,422    
Accumulated other comprehensive income   (880)   (880)     (817)    
Ownership changes   (560)   (560)     (558)    
Invested Capital   12,289 12,276 12,289 12,276 $ 12,287 $ 12,281 $ 12,272 $ 12,195
Issuance of perpetual subordinated notes   $ 0 $ 0 $ 0 $ 293 [1]        
Subordinated Notes, First Tranche                  
Disclosure of objectives, policies and processes for managing capital [line items]                  
Issuance of perpetual subordinated notes $ 220                
Issuance of perpetual subordinated notes 220                
Subordinated Notes, Second Tranche                  
Disclosure of objectives, policies and processes for managing capital [line items]                  
Issuance of perpetual subordinated notes 293                
Issuance of perpetual subordinated notes $ 293                
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%          
[1] Refer to Note 15, Partnership Capital.