XML 124 R107.htm IDEA: XBRL DOCUMENT v3.10.0.1
COMMITMENTS AND CONTINGENCIES - Additional Information (Details)
1 Months Ended 12 Months Ended
May 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
city
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Oct. 17, 2017
USD ($)
Aug. 31, 2014
USD ($)
Loss Contingencies [Line Items]            
Accrued incentives (fund level)   $ 1,434,458,000 $ 1,918,952,000      
Compensation expense related to accrued incentives (fund level)   754,903,000 1,000,232,000      
Capital commitments   $ 385,800,000 429,100,000      
Number of offices (in office) | city   17        
Occupancy costs, including non-lease expenses   $ 22,369,000 20,477,000 $ 22,637,000    
Consolidated Funds            
Loss Contingencies [Line Items]            
Commitments   $ 13,800,000 6,000,000      
Highstar Capital            
Loss Contingencies [Line Items]            
Contingent consideration (up to) $ 36,100,000.0         $ 60,000,000
Period of performance   7 years        
Reduction in contingent consideration liability $ 7,100,000          
Contingent consideration   $ 6,700,000 18,800,000      
Contingent consideration expense   12,100,000 $ 4,800,000 $ 4,900,000    
Fifth Street Management LLC            
Loss Contingencies [Line Items]            
Indemnification asset   $ 32,000,000     $ 56,200,000