Commitments - Estimated Monthly Principal & Interest Advances (Details) $ in Millions	Jun. 30, 2020 USD ($) Borrower	Mar. 31, 2020 USD ($) Borrower
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	131,400	27,500
Number of borrowers requesting forbearance plan, no advance requirements	5,400	1,300
Estimate of liability \| $	$ 135.9	$ 29.2
Servicer
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	34,500	5,500
Estimate of liability \| $	$ 44.0	$ 8.1
New Residential Investment Corp
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	83,900	16,800
Estimate of liability \| $	$ 81.8	$ 16.6
Ocwen Subservicer
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	7,600	3,900
Estimate of liability \| $	$ 10.1	$ 4.5
GSE Loans \| Servicer
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	6,600	1,400
Estimate of liability \| $	$ 8.3	$ 1.8
GSE Loans \| New Residential Investment Corp
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	10,100	2,300
Estimate of liability \| $	$ 11.0	$ 2.6
Ginnie Mae Loans \| Servicer
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	9,900	400
Estimate of liability \| $	$ 9.2	$ 0.5
PLS Loans \| Servicer
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	18,000	3,700
Estimate of liability \| $	$ 26.5	$ 5.8
PLS Loans \| New Residential Investment Corp
Unusual or Infrequent Item, or Both [Line Items]
Number of borrowers requesting forbearance plan	73,800	14,500
Estimate of liability \| $	$ 70.8	$ 14.0