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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Taxes [Line Items] |  |  |  |
Operating loss carryforwards | $ 121.0 |  |  |
Decrease in valuation allowance | $ 19.0 | $ 0.0 |  |
Realization assessment period | 3 years |  |  |
Interest and penalties related to uncertain tax positions | $ 0.0 | 0.0 | $ 0.3 |
Unrecognized tax benefits that would impact effective tax rate | 0.0 | 0.0 | 0.0 |
Less: Valuation allowance | 5.0 | $ 24.0 | 24.0 | $ 36.0
Decrease resulting from settlements with taxing authorities |  |  | $ (15.0) |
CIFG Holding Inc. |  |  |  |
Income Taxes [Line Items] |  |  |  |
Operating loss carryforwards | $ 189.0 |  |  |
U.K. |  |  |  |
Income Taxes [Line Items] |  |  |  |
Corporate tax rate | 19.00% |  |  |
France |  |  |  |
Income Taxes [Line Items] |  |  |  |
Corporate tax rate | 25.00% | 27.50% | 28.00% |
U.S. |  |  |  |
Income Taxes [Line Items] |  |  |  |
Corporate tax rate | 21.00% |  |  |

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