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Warehouse And Other Secured Lines Of Credit - Additional Information (Details) - USD ($)
1 Months Ended
Nov. 09, 2022
Sep. 30, 2022
Aug. 08, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]        
Outstanding Balance   $ 2,000,000,000   $ 2,000,000,000
Warehouse Line of Credit        
Line of Credit Facility [Line Items]        
Outstanding amount   4,712,719,000   15,954,938,000
Warehouse Line of Credit | Line of Credit, ASAP program        
Line of Credit Facility [Line Items]        
Outstanding amount   41,299,000   $ 516,889,000
Maximum borrowing capacity   500,000,000    
Warehouse Line of Credit | Line of Credit, EF program        
Line of Credit Facility [Line Items]        
Outstanding amount   28,400,000    
Revolving Credit Facility | MSR Facility | Line of Credit        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity   1,500,000,000    
Revolving Credit Facility | MSR Facility | Line of Credit | Subsequent Event        
Line of Credit Facility [Line Items]        
Net draw $ 500,000,000      
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity     $ 500,000,000  
Outstanding Balance   $ 0