Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities in an Unrealized Loss Position - Associated Intent to Sell (Details)

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INVESTMENTS IN REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities in an Unrealized Loss Position - Associated Intent to Sell (Details)
9 Months Ended
Sep. 30, 2018
USD ($)
Debt Securities, Available-for-sale [Line Items]  
Unrealized losses reflected in other comprehensive income $ 0
Securities New Residential intends to sell  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 0
Amortized Cost Basis After Impairment 0
Unrealized Credit Losses 0
Unrealized Non-Credit Losses 0
Securities New Residential is more likely than not to be required to sell  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 0
Amortized Cost Basis After Impairment 0
Unrealized Credit Losses 0
Credit impaired securities  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 1,013,029,000
Amortized Cost Basis After Impairment 1,036,994,000
Unrealized Credit Losses (3,889,000)
Unrealized Non-Credit Losses (23,965,000)
Non-credit impaired securities  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 2,467,380,000
Amortized Cost Basis After Impairment 2,513,158,000
Unrealized Credit Losses 0
Unrealized Non-Credit Losses (45,778,000)
Total debt securities in an unrealized loss position  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 3,480,409,000
Amortized Cost Basis After Impairment 3,550,152,000
Unrealized Credit Losses (3,889,000)
Unrealized Non-Credit Losses $ (69,743,000)