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SEGMENT INFORMATION - Balance Sheet Information (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of operating segments [line items]      
Total assets $ 112,516 $ 112,004  
Total liabilities 70,779 66,999  
Equity accounted investments 19,943 20,807 $ 19,719
Core Office      
Disclosure of operating segments [line items]      
Total assets 34,039 37,661  
Total liabilities 17,581 18,172  
Equity accounted investments 8,547 9,819  
Core Retail      
Disclosure of operating segments [line items]      
Total assets 30,363 30,585  
Total liabilities 13,850 14,316  
Equity accounted investments 9,674 9,945  
LP Investments      
Disclosure of operating segments [line items]      
Total assets 47,458 43,403  
Total liabilities 32,146 27,516  
Equity accounted investments 1,722 1,043  
Corporate      
Disclosure of operating segments [line items]      
Total assets 656 355  
Total liabilities 7,202 6,995  
Equity accounted investments $ 0 $ 0