Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 942
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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Advances - Schedule of Advances Paid on Behalf of Borrowers or on Foreclosed Properties (Details) - USD ($) $ in Millions	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Advances On Behalf of Borrowers [Line Items]
Advances, gross	$ 372.8		$ 487.9
Allowance for losses	(3.3)	$ (3.2)	(4.5)	$ (6.4)	$ (7.5)	$ (7.4)
Advances, net (2)	369.5		483.4
Subservicing Client One \| Advanaces \| Counterparty Risk
Advances On Behalf of Borrowers [Line Items]
Advances, net (2)	23.3
GSE
Advances On Behalf of Borrowers [Line Items]
Advances, net (2)	42.8		82.2
Ginnie Mae
Advances On Behalf of Borrowers [Line Items]
Advances, net (2)	60.1		63.3
Non-Agency
Advances On Behalf of Borrowers [Line Items]
Advances, net (2)	266.6		337.9
Principal and interest
Advances On Behalf of Borrowers [Line Items]
Advances, gross	79.4		98.9
Taxes and insurance
Advances On Behalf of Borrowers [Line Items]
Advances, gross	171.7		278.8
Foreclosures, bankruptcy, REO and other (1)
Advances On Behalf of Borrowers [Line Items]
Advances, gross	121.7		$ 110.2
Foreclosures, bankruptcy, REO and other (1) \| NEW YORK
Advances On Behalf of Borrowers [Line Items]
Advances, gross	$ 24.1