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Loans Held for Sale - Summary of Activity in Balance of Loans Held for Sale, at Fair Value (Footnote) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at fair value	$ 617.8	$ 917.5	$ 366.4	$ 208.8
Repurchased Ginnie Mae Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at fair value	$ 32.1	$ 220.9	$ 51.1

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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.

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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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No definition available.

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