Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENT - Narrative (Details)

v3.19.3.a.u2
FAIR VALUE MEASUREMENT - Narrative (Details)
$ in Millions
12 Months Ended
Sep. 05, 2019
USD ($)
earnout_payment
Sep. 03, 2019
USD ($)
Jul. 03, 2018
USD ($)
earnout_payment
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Schedule of Equity Method Investments [Line Items]          
Assets, fair value adjustment         $ 14.4
Minimum          
Schedule of Equity Method Investments [Line Items]          
Recapture rate, term (in months)       3 months  
Broker price discount       10.00%  
Maximum          
Schedule of Equity Method Investments [Line Items]          
Recapture rate, term (in months)       6 months  
Broker price discount       25.00%  
Real Estate Owned          
Schedule of Equity Method Investments [Line Items]          
Assets, fair value adjustment       $ (0.6)  
Real Estate Acquired in Satisfaction of Debt          
Schedule of Equity Method Investments [Line Items]          
Assets, fair value adjustment         3.1
Residential Mortgage Loans          
Schedule of Equity Method Investments [Line Items]          
Assets, fair value adjustment       $ (20.0)  
Loans Held-for-sale          
Schedule of Equity Method Investments [Line Items]          
Assets, fair value adjustment         $ 11.3
Maturity Greater than 30 Days          
Schedule of Equity Method Investments [Line Items]          
Days delinquent (in days)       30 days  
Mortgage Servicing Rights Financing Receivable          
Schedule of Equity Method Investments [Line Items]          
Discount rate       8.90% 10.30%
MSRs          
Schedule of Equity Method Investments [Line Items]          
Discount rate       7.80% 8.70%
MSRs | Excess MSRs Investees          
Schedule of Equity Method Investments [Line Items]          
Discount rate       7.80% 8.80%
Nonrecurring          
Schedule of Equity Method Investments [Line Items]          
Assets measured at fair value on a nonrecurring basis       $ 1,242.2 $ 764.1
Nonrecurring | Residential Mortgage Loans Held-for-sale Carried At Lower Cost Or Market          
Schedule of Equity Method Investments [Line Items]          
Assets measured at fair value on a nonrecurring basis       1,189.5  
Nonrecurring | Real Estate Owned          
Schedule of Equity Method Investments [Line Items]          
Assets measured at fair value on a nonrecurring basis       $ 52.7  
Nonrecurring | Real Estate Securities          
Schedule of Equity Method Investments [Line Items]          
Assets measured at fair value on a nonrecurring basis         689.1
Nonrecurring | Real Estate Acquired in Satisfaction of Debt          
Schedule of Equity Method Investments [Line Items]          
Assets measured at fair value on a nonrecurring basis         $ 75.0
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]          
Earnout payment payments | earnout_payment     3    
Contingent consideration, high     $ 60.0    
Cash consideration     212.3    
Contingent consideration, discount rate 11.00%        
Guardian Acquisition          
Schedule of Equity Method Investments [Line Items]          
Earnout payment payments | earnout_payment 4        
Contingent consideration, high   $ 17.5      
Cash consideration   7.6      
Contingent consideration, discount rate 11.00%        
NRM Acquisition LLC | Shellpoint Acquisition          
Schedule of Equity Method Investments [Line Items]          
Contingent consideration, high     60.0    
Cash consideration     $ 212.3    
NRZ Guardian Purchaser LLC | Guardian Acquisition          
Schedule of Equity Method Investments [Line Items]          
Contingent consideration, high   17.5      
Cash consideration   $ 7.6      
Shellpoint Partners LLC | NRM Acquisition LLC | Shellpoint Acquisition          
Schedule of Equity Method Investments [Line Items]          
Cash consideration $ 10.0