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Regulatory Requirements - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Public Utilities, General Disclosures [Line Items]
Home Equity Conversion Mortgage-Backed Securities Related Borrowings At Fair Value	$ (9,924.6)	$ (10,253.1)	$ (10,872.1)	$ (8,132.5)	$ (8,035.4)	$ (7,797.3)
Restrictive liquidity requirements	65.0
Cash and cash equivalents	172.8		184.8
Assets serviced	189,800.0		170,300.0
Owned MSRs
Public Utilities, General Disclosures [Line Items]
Assets serviced	150,900.0		$ 129,800.0
PHH
Public Utilities, General Disclosures [Line Items]
Restrictive liquidity requirements	$ 20.0

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Total of property assets serviced as measured by UPB.

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This represents the amount of liability which is a resultant of reverse mortgage loans sold into the secondary with servicing rights retained. As the transfer of these loans do not meet the definition of participating interest because of the servicing requirement that requires the issuer to absorb some level of risk, these transfers are accounted for as financing.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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