Mortgage Servicing - Schedule of Components of Servicing and Subservicing Fees (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Transfers and Servicing [Abstract]
Servicing	$ 89.4	$ 80.9	$ 179.3	$ 169.4
Subservicing	18.4	20.4	38.0	35.0
MAV	17.4	18.8	35.7	35.5
Rithm	59.2	64.7	118.8	131.9
Servicing and Subservicing fees, total	184.4	184.8	371.8	371.8
Late charges	9.5	11.7	19.0	21.8
Reverse subservicing ancillary fees	9.8	6.3	18.0	9.4
Recording fees	1.3	2.6	2.5	5.9
Loan collection fees	2.3	2.9	4.9	5.8
Boarding and deboarding fees	0.9	1.9	1.8	3.6
Custodial accounts (float earnings)	26.2	1.8	46.4	2.8
GSE forbearance fees	0.3	0.2	0.5	0.4
Other, net	2.9	3.0	4.8	6.3
Total ancillary income	53.2	30.3	97.9	56.0
Servicing and subservicing fees	$ 237.6	$ 215.1	$ 469.7	$ 427.8

Boarding and de-boarding fees.

No definition available.

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- Definition

All amounts that, per contract, are due in exchange for servicing or subservicing the financial asset.

+ References

No definition available.

+ Details

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- Definition

Contractually specified servicing fees collected on behalf of counterparty.

+ References

No definition available.

+ Details

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- Definition

All amounts that, per contract, are due to the subservicer in exchange for subservicing the financial asset and would no longer be received by a subservicer if the owners of the servicing rights were to exercise their authority under the contract to shift the subservicing to another servicer.

+ References

No definition available.

+ Details

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- Definition

Represents amount related to interest earned on unremitted loan payments held in custodial accounts, are due to the servicer in exchange for servicing the financial asset.

+ References

No definition available.

+ Details

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- Definition

GSE forbearance fees.

+ References

No definition available.

+ Details

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- Definition

Represents loan collection fees paid by the borrower to the servicer for automated payment services.

+ References

No definition available.

+ Details

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- Definition

Recording Fees

+ References

No definition available.

+ Details

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- Definition

Reverse subservicing ancillary income.

+ References

No definition available.

+ Details

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- Definition

This represents the amount of the fee earned, generally expressed as a percent of UPB, from the borrowers’ payments. Also includes late fees, prepayment penalties, float earnings and other ancillary fees.

+ References

No definition available.

+ Details

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- Definition

Servicing fee collected on mortgage servicing rights for which rights have been sold to NRZ.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

All amounts that are due to the servicer of a financial asset, excluding contractually specified servicing fees and late fees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122596-111746

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- Definition

All amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset.

+ References

+ Details

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- Definition

Amount of contractually specified servicing fee, late fee, and ancillary fee recognized as income for servicing asset and servicing liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122596-111746

+ Details

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- Definition

All amounts that are due to the servicer of a financial asset as a result of the debt holder not meeting the monthly payment terms.

+ References

+ Details

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- References

No definition available.

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