Other financing liabilities.

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- Definition

Unpaid principal balance of loans subserviced.

+ References

No definition available.

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- Definition

Amount of contractual principal due at origination of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 29
-Paragraph Column F
-Publisher SEC

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-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
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-Publisher FASB
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

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- Definition

Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479628/948-310-S99-1

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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

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-Topic 235
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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Investment in Equity Method Investee and Related Party Transactions (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Other financing liabilities, at fair value ($317.2 and $322.7 due to related party)	$ 835.5		$ 846.9
MSRs, at fair value	2,547.4		2,466.3	$ 2,272.2
Financing Liability Mortgage Servicing Rights Pledged [Member]
Schedule of Equity Method Investments [Line Items]
Other financing liabilities, at fair value ($317.2 and $322.7 due to related party)	$ 579.1		583.5
MAV Canopy HoldCo I, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	15.00%
MAV MSR Sale Agreements \| Financing Liability Mortgage Servicing Rights Pledged [Member]
Schedule of Equity Method Investments [Line Items]
Other financing liabilities, at fair value ($317.2 and $322.7 due to related party)	$ 317.2		322.7
Joint Marketing Agreement and Recapture Agreement
Schedule of Equity Method Investments [Line Items]
UPB of MSRs sold	25.8	$ 18.0
MAV Transferred MSRs
Schedule of Equity Method Investments [Line Items]
MSRs, at fair value	325.7		$ 330.6
MSR Asset Vehicle LLC
Schedule of Equity Method Investments [Line Items]
Unpaid principal balance of loans subserviced	40,500.0
MSR Asset Vehicle LLC \| Mortgage Servicing Rights Title Transferred
Schedule of Equity Method Investments [Line Items]
UPB of rights to MSRs sold	$ 21,100.0