Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENT - Narrative (Details)

v3.20.1
FAIR VALUE MEASUREMENT - Narrative (Details)
$ in Millions
3 Months Ended
Sep. 05, 2019
USD ($)
earnout_payment
Sep. 20, 2018
Mar. 31, 2020
USD ($)
Jul. 03, 2018
USD ($)
earnout_payment
Fair Value, Measurements, Nonrecurring        
Schedule of Equity Method Investments [Line Items]        
Assets, fair value     $ 1,312.2  
Minimum        
Schedule of Equity Method Investments [Line Items]        
Broker price discount     10.00%  
Maximum        
Schedule of Equity Method Investments [Line Items]        
Broker price discount     25.00%  
Weighted Average        
Schedule of Equity Method Investments [Line Items]        
Broker price discount     16.00%  
Residential Mortgage Loans Held-for-Sale | Fair Value, Measurements, Nonrecurring        
Schedule of Equity Method Investments [Line Items]        
Assets, fair value     $ 1,264.5  
Real Estate Acquired in Satisfaction of Debt | Fair Value, Measurements, Nonrecurring        
Schedule of Equity Method Investments [Line Items]        
Assets, fair value     47.7  
Loans Held-for-sale and Held-for-investment        
Schedule of Equity Method Investments [Line Items]        
Asset fair value adjustment     98.7  
Real Estate Owned        
Schedule of Equity Method Investments [Line Items]        
Asset fair value adjustment     $ 1.8  
Mortgage Servicing Rights Financing Receivable        
Schedule of Equity Method Investments [Line Items]        
Discount rate     9.40%  
Mortgage Servicing Rights Financing Receivable | Minimum        
Schedule of Equity Method Investments [Line Items]        
Discount rate     8.00%  
Mortgage Servicing Rights Financing Receivable | Maximum        
Schedule of Equity Method Investments [Line Items]        
Discount rate     10.00%  
Mortgage Servicing Rights Financing Receivable | Weighted Average        
Schedule of Equity Method Investments [Line Items]        
Discount rate     9.40%  
MSRs        
Schedule of Equity Method Investments [Line Items]        
Discount rate     8.20%  
MSRs | Minimum        
Schedule of Equity Method Investments [Line Items]        
Discount rate     7.90%  
MSRs | Maximum        
Schedule of Equity Method Investments [Line Items]        
Discount rate     13.50%  
MSRs | Weighted Average        
Schedule of Equity Method Investments [Line Items]        
Discount rate     8.20%  
MSRs | Excess MSRs Investees        
Schedule of Equity Method Investments [Line Items]        
Discount rate     8.30%  
MSRs | Excess MSRs Investees | Minimum        
Schedule of Equity Method Investments [Line Items]        
Discount rate     8.00%  
MSRs | Excess MSRs Investees | Maximum        
Schedule of Equity Method Investments [Line Items]        
Discount rate     8.50%  
MSRs | Excess MSRs Investees | Weighted Average        
Schedule of Equity Method Investments [Line Items]        
Discount rate     8.30%  
London Interbank Offered Rate (LIBOR) | Mortgage Servicing Rights Financing Receivable        
Schedule of Equity Method Investments [Line Items]        
Variable interest rate spread     1.80%  
Shellpoint Acquisition        
Schedule of Equity Method Investments [Line Items]        
Cash earnout payments | earnout_payment       3
Contingent consideration       $ 60.0
Contingent consideration, discount rate   11.00%    
Guardian Asset Management        
Schedule of Equity Method Investments [Line Items]        
Cash earnout payments | earnout_payment 4      
Contingent consideration, discount rate 11.00%      
NRZ Guardian Purchaser LLC | Guardian Asset Management        
Schedule of Equity Method Investments [Line Items]        
Contingent consideration $ 17.5      
Shellpoint Partners LLC | NRM Acquisition LLC | Shellpoint Acquisition        
Schedule of Equity Method Investments [Line Items]        
Cash consideration transferred $ 10.0