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INVESTMENT PROPERTIES - Schedule of Changes in Fair Value of Investment Properties (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Disclosure of detailed information about investment property [line items]    
Fair value, beginning of period $ 85,613  
Dispositions (5,857)  
Fair value changes (161)  
Foreign currency translation and other (555)  
Fair value, end of period1 84,239  
Investment property [member]    
Disclosure of detailed information about investment property [line items]    
Right-of-use assets $ 4,400 $ 4,400