Income Taxes (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Sep. 30, 2023 |
Dec. 31, 2022 |
|
| Income Taxes | ||
| Deferred tax assets | $ 64.5 | |
| States operating loss carryforwards | $ 203.0 | |
| Minimum | ||
| Income Taxes | ||
| Number of tax years open for state tax audit (in years) | 3 years | |
| Maximum | ||
| Income Taxes | ||
| Number of tax years open for state tax audit (in years) | 5 years | |
| Domestic Tax Authority | ||
| Income Taxes | ||
| Operating loss carryforwards | $ 1,600.0 | |
| Operating loss carryforwards, subject to expiration | 700.0 | |
| Operating loss carryforwards, not subject to expiration | 900.0 | |
| Tax credit carryforward, amount | 33.5 | |
| State and Local Jurisdiction | ||
| Income Taxes | ||
| Operating loss carryforwards | 1,100.0 | |
| Operating loss carryforwards, subject to expiration | 247.0 | |
| Operating loss carryforwards, not subject to expiration | $ 650.0 |