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Commitments - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Other Commitments [Line Items] |  |
Threshold of outstanding principal balance on maximum claim amount (as a percent) | 98.00% |
Floating Rate Reverse Mortgage Loans |  |
Other Commitments [Line Items] |  |
Additional borrowing capacity to borrowers | $ 1,800.0 | $ 1,800.0
Funded amount in connection with reverse mortgage loans | 135.9 |
Forward Mortgage Loan Interest Rate Lock Commitments |  |
Other Commitments [Line Items] |  |
Short-term commitments to lend | 1,100.0 |
Reverse loans IRLCs |  |
Other Commitments [Line Items] |  |
Short-term commitments to lend | $ 16.4 |
Customer Concentration Risk | Unpaid Principal Balance | MAV Asset Vehicle LLC |  |
Other Commitments [Line Items] |  |
Concentration risk (percent) | 16.00% |
Customer Concentration Risk | Unpaid Principal Balance | Rithm Capital Corp |  |
Other Commitments [Line Items] |  |
Concentration risk (percent) | 16.00% |
Customer Concentration Risk | Loan Count | MAV Asset Vehicle LLC |  |
Other Commitments [Line Items] |  |
Concentration risk (percent) | 12.00% |
Customer Concentration Risk | Loan Count | Rithm Capital Corp |  |
Other Commitments [Line Items] |  |
Concentration risk (percent) | 27.00% |
Customer Concentration Risk | Delinquent Loans | Rithm |  |
Other Commitments [Line Items] |  |
Concentration risk (percent) | 68.00% |

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