v3.26.1
SEGMENT INFORMATION - Revenue and FFO (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disclosure of operating segments [line items]        
Total revenue $ 1,886 $ 1,802 $ 3,571 $ 3,551
FFO (85) (144) (216) (257)
Office        
Disclosure of operating segments [line items]        
Total revenue 439 445 918 920
FFO (38) (33) (49) (18)
Retail        
Disclosure of operating segments [line items]        
Total revenue 360 364 715 730
FFO 100 89 167 168
LP Investments        
Disclosure of operating segments [line items]        
Total revenue 1,040 958 1,853 1,829
FFO 52 11 79 21
Corporate        
Disclosure of operating segments [line items]        
Total revenue 47 35 85 72
FFO $ (199) $ (211) $ (413) $ (428)