v3.26.1
FAIR VALUE MEASUREMENTS OF FINANCIAL INSTRUMENTS - Changes to Level 3 (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Balance, beginning        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Consolidated Funds     $ 252  
Borrowings        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Consolidated Funds, Level III Changes $ 0      
Initial Consolidation        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Consolidated Funds, Level III Changes 41      
Purchases        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Consolidated Funds, Level III Changes 0      
Dispositions        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Consolidated Funds, Level III Changes (123)      
Balance, ending        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Consolidated Funds 170      
Balance, beginning        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value     444 $ 228
Borrowings        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 9 $ 13    
Purchases        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes   61    
Disposals        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 0      
Transfers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 0      
Balance, ending        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value 453   302  
Balance, beginning        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value     330 351
Level III Changes in Consolidated Funds     253 251
Borrowings        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes (4) (20)    
Consolidated Funds, Level III Changes 7 14    
Initial Consolidation        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Consolidated Funds, Level III Changes 1,882      
Purchases        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes   0    
Consolidated Funds, Level III Changes 83 157    
Disposals        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes (66)      
Transfers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 0      
Dispositions        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Consolidated Funds, Level III Changes (13)      
Balance, ending        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value 260   331  
Level III Changes in Consolidated Funds 2,212   422  
Balance, beginning        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value     310 363
Borrowings        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 65 3    
Disposals        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 0      
Purchases        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes   0    
Transfers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes (311)      
Balance, ending        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value 64   366  
Balance, beginning        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value     410 $ 231
Borrowings        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 23 (22)    
Disposals        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 0      
Transfers        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes 0      
Purchases        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes   $ 0    
Balance, ending        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Level III Changes in Fair value $ 433   $ 209