Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.20.2
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 20, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Commitments and Contingencies [Line Items]            
Total commitments to originate loans   $ 6,400.0   $ 6,400.0   $ 1,500.0
Total commitments related to derivatives   6,500.0   6,500.0   $ 2,000.0
Accrued settlement amount   22.9   $ 22.9    
Litigation settlement payment date       2020-10    
Subsequent Event            
Commitments and Contingencies [Line Items]            
Settlement agreement, date October 20, 2020          
Litigation settlement amount $ 24.9          
Settlement amount covered by insurance $ 2.0          
U.S. Department of Housing and Urban Development (HUD)            
Commitments and Contingencies [Line Items]            
Complaint filing date       May 18, 2016    
Claim description       The government’s claims arise from the Company’s origination of residential mortgage loans, which the Company subsequently endorsed for FHA insurance between January 1, 2006, and December 31, 2011.    
Office Space and Equipment            
Commitments and Contingencies [Line Items]            
Operating leases expiration year       2030    
Occupancy, Equipment and Communication | Office Space and Equipment            
Commitments and Contingencies [Line Items]            
Rent expense   $ 7.9 $ 7.3 $ 22.1 $ 22.2