Securitizations and Variable Interest Entities - Schedule Of Securitization Reverse Mortgage Loans Buyouts And Financing Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Receivables, net	$ 233.9	$ 189.8
Debt service accounts	170.0		$ 27.2
Mortgage warehouse facilities	2,061.7	1,224.6
Liabilities	11,690.5	15,492.8
Other restricted cash	26.3		$ 35.2
Total Assets	12,350.3	16,170.6
Variable Interest Entity, Primary Beneficiary
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Receivables, net	80.2	64.2
Variable Interest Entity, Primary Beneficiary \| OLIT Securitization Notes
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure	1,440.8	698.2
Receivables, net	79.9	62.6
Real estate owned	162.8	81.0
Mortgage warehouse facilities	2,041.4	951.9
Unamortized discount and debt issuance costs	(116.4)	(52.6)
Accrued expenses (Other liabilities)	5.0	2.6
Liabilities	1,930.0	901.9
Other restricted cash	157.0	26.5
Total Assets	$ 1,840.5	$ 868.4

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