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Agreements and Transactions with Related Parties - 2015 Activity (Details) - USD ($) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2025 | Apr. 30, 2025 | Dec. 31, 2015
Residential Mortgage Banking Business |  |  |
Agreements and Transactions with Related Parties |  |  |
Agreement to sell business, expected sale price |  | $ 22.0 |
Distribution received | $ 16.4 | 5.6 |
Wakefield Investment Holding LLC | Residential Mortgage Banking Business |  |  |
Agreements and Transactions with Related Parties |  |  |
Agreement to sell business, expected sale price |  | 117.3 |
Sale agreement, installment one |  | 15.0 |
Sale agreement, installment two |  | 15.0 |
Sale agreement, installment three |  | $ 87.3 |
Residential mortgage banking business | Other Related Party Transactions | Related Party | ACM |  |  |
Agreements and Transactions with Related Parties |  |  |
Noncontrolling interest in equity method investment acquired (as a percent) |  |  | 50.00%
ACM | Residential mortgage banking business | Other Related Party Transactions | Related Party |  |  |
Agreements and Transactions with Related Parties |  |  |
Acquisition purchase price |  |  | $ 9.6

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