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Acquisitions and Discontinued Operations (Details) - USD ($) $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
May 02, 2022 | Nov. 19, 2021 | Dec. 31, 2022 | Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Goodwill acquired |  |  | $ 58.0 |
Discontinued operations | Government Guaranteed Loans | Government-guaranteed and Private Education Lending Business |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Loans included in divestiture |  |  | $ 434.0 | $ 339.0
XUP |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Goodwill acquired |  | $ 20.6 |  |
GradFin |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Goodwill acquired | $ 58.0 |  |  |
Business combination, consideration transferred | 72.0 |  |  |
Cash payment | 62.0 |  |  |
Contingent consideration | 10.0 |  |  |
Intangible assets acquired | $ 12.0 |  |  |

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