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Income Taxes - Net Operating Losses and Tax Rates (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Net operating losses |  |  |
Tax benefit for release of uncertain tax position | $ 7.6 | $ 7.3 |
Statutory Federal income tax rate (as a percent) | 21.00% | 21.00% | 21.00%
Domestic Tax Authority |  |  |
Net operating losses |  |  |
Operating loss carryforward | $ 566.3 | $ 817.4 |
Estimated effective tax rate on net operating losses | 21.00% |  |
State and Local Jurisdiction |  |  |
Net operating losses |  |  |
Operating loss carryforward | $ 316.2 | $ 380.6 |
Estimated effective tax rate on net operating losses | 3.45% |  |

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