Other Financing Liabilities, at Fair Value – Schedule of Results of Operations in Connection With MSR Transfer Agreements that Do Not Qualify for Sale Accounting (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Related Party Transaction [Line Items]
Proceeds from Collection of Loans Receivable	$ 33.2	$ 79.3	$ 106.8	$ 230.0
Less: Subservicing fee retained by Onity	(6.5)	(19.6)	(20.4)	(58.1)
Ancillary and other settlement	2.8	3.2	8.0	9.9
MSR Pledged liability expense	42.3	76.5	133.3	219.8
ESS Financing Liability
Related Party Transaction [Line Items]
MSR Pledged liability expense	29.5	62.9	94.4	181.7
ESS Financing Liability
Related Party Transaction [Line Items]
MSR Pledged liability expense	12.8	13.6	38.9	38.1
MSR Asset Vehicle LLC
Related Party Transaction [Line Items]
Proceeds from Collection of Loans Receivable	14.1	17.2	49.9	49.1
Less: Subservicing fee retained by Onity	(2.1)	(2.3)	(7.0)	(6.7)
Ancillary and other settlement	(0.6)	(0.3)	(0.9)	(0.5)
MSR Pledged liability expense	11.4	14.5	42.1	41.8
Rithm Capital Corp . and others
Related Party Transaction [Line Items]
Proceeds from Collection of Loans Receivable	19.1	62.1	56.9	180.9
Less: Subservicing fee retained by Onity	(4.4)	(17.2)	(13.4)	(51.4)
Ancillary and other settlement	3.4	3.5	8.9	10.4
MSR Pledged liability expense	$ 18.1	48.4	$ 52.4	139.9
Subservicing Fee Retained		(12.5)		(38.3)
Net Servicing Fee Remittance		$ 30.3		$ 95.3

Ancillary fee/income and other settlement (incl. expense reimbursement)

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- Definition

Bank Servicing Fees Retained

+ References

No definition available.

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Net Servicing Fee Remittance

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- Definition

Subservicing Fee Retained

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- Definition

This element represents interest incurred for borrowed money which was used to produce goods or render services.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
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- Definition

The cash inflow associated with the collection, including prepayments, of loans receivable issued for financing of goods and services.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(i))
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