Quarterly report pursuant to Section 13 or 15(d)

DEBT OBLIGATIONS - Borrowing Capacity (Details)

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DEBT OBLIGATIONS - Borrowing Capacity (Details)
6 Months Ended
Jun. 30, 2018
USD ($)
Debt Instrument [Line Items]  
Face amount of debt $ 15,484,977,000
Non-Agency Bonds  
Debt Instrument [Line Items]  
Face amount of debt 86,299,855.86000000
Residential Mortgage Loans and REO  
Debt Instrument [Line Items]  
Borrowing Capacity 3,541,961,000
Balance Outstanding 2,230,692,000
Available Financing 1,311,269,000
Excess MSRs  
Debt Instrument [Line Items]  
Borrowing Capacity 150,000,000
Balance Outstanding 0
Available Financing 150,000,000
MSRs  
Debt Instrument [Line Items]  
Borrowing Capacity 975,000,000
Balance Outstanding 278,442,000
Available Financing 696,558,000
Servicer Advances  
Debt Instrument [Line Items]  
Borrowing Capacity 1,745,000,000
Balance Outstanding 1,275,406,000
Available Financing $ 469,594,000
Unused borrowing capacity fee 0.10%
Consumer Loan  
Debt Instrument [Line Items]  
Borrowing Capacity $ 150,000,000
Balance Outstanding 41,676,000
Available Financing 108,324,000
Debt Excess Borrowing Capacity  
Debt Instrument [Line Items]  
Borrowing Capacity 6,561,961,000
Balance Outstanding 3,826,216,000
Available Financing $ 2,735,745,000