v3.26.1
REVENUE (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Revenues $ 990 $ 954
Energy    
Disaggregation of Revenue [Line Items]    
Revenues 218 180
Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenues 355 310
Private equity    
Disaggregation of Revenue [Line Items]    
Revenues 80 71
Real estate    
Disaggregation of Revenue [Line Items]    
Revenues 229 292
Credit    
Disaggregation of Revenue [Line Items]    
Revenues 108 101
United States    
Disaggregation of Revenue [Line Items]    
Revenues 304 351
United Kingdom    
Disaggregation of Revenue [Line Items]    
Revenues 209 203
Canada    
Disaggregation of Revenue [Line Items]    
Revenues 208 184
Other    
Disaggregation of Revenue [Line Items]    
Revenues 139 99
Base management and advisory fees | United States | Energy    
Disaggregation of Revenue [Line Items]    
Revenues 28 28
Base management and advisory fees | United States | Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenues 42 44
Base management and advisory fees | United States | Private equity    
Disaggregation of Revenue [Line Items]    
Revenues 23 24
Base management and advisory fees | United States | Real estate    
Disaggregation of Revenue [Line Items]    
Revenues 134 178
Base management and advisory fees | United States | Credit    
Disaggregation of Revenue [Line Items]    
Revenues 77 77
Base management and advisory fees | United Kingdom | Energy    
Disaggregation of Revenue [Line Items]    
Revenues 60 43
Base management and advisory fees | United Kingdom | Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenues 58 46
Base management and advisory fees | United Kingdom | Private equity    
Disaggregation of Revenue [Line Items]    
Revenues 26 21
Base management and advisory fees | United Kingdom | Real estate    
Disaggregation of Revenue [Line Items]    
Revenues 62 89
Base management and advisory fees | United Kingdom | Credit    
Disaggregation of Revenue [Line Items]    
Revenues 3 4
Base management and advisory fees | Canada | Energy    
Disaggregation of Revenue [Line Items]    
Revenues 50 47
Base management and advisory fees | Canada | Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenues 113 97
Base management and advisory fees | Canada | Private equity    
Disaggregation of Revenue [Line Items]    
Revenues 19 15
Base management and advisory fees | Canada | Real estate    
Disaggregation of Revenue [Line Items]    
Revenues 6 6
Base management and advisory fees | Canada | Credit    
Disaggregation of Revenue [Line Items]    
Revenues 20 19
Base management and advisory fees | Other | Energy    
Disaggregation of Revenue [Line Items]    
Revenues 37 25
Base management and advisory fees | Other | Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenues 55 43
Base management and advisory fees | Other | Private equity    
Disaggregation of Revenue [Line Items]    
Revenues 12 11
Base management and advisory fees | Other | Real estate    
Disaggregation of Revenue [Line Items]    
Revenues 27 19
Base management and advisory fees | Other | Credit    
Disaggregation of Revenue [Line Items]    
Revenues 8 1
Incentive fees    
Disaggregation of Revenue [Line Items]    
Revenues 130 117
Incentive fees | Energy    
Disaggregation of Revenue [Line Items]    
Revenues 43 37
Incentive fees | Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenues 87 80
Incentive fees | Private equity    
Disaggregation of Revenue [Line Items]    
Revenues 0 0
Incentive fees | Real estate    
Disaggregation of Revenue [Line Items]    
Revenues 0 0
Incentive fees | Credit    
Disaggregation of Revenue [Line Items]    
Revenues $ 0 $ 0