Income Taxes (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
|
| Income Tax Disclosure [Abstract] | |||||
| Gross deferred federal, state and local tax expense (benefit) | $ (27.8) | $ (12.2) | $ (52.7) | $ (28.9) | |
| Increase in valuation allowance | 27.5 | $ 12.5 | 50.5 | $ 28.8 | |
| Valuation allowance | $ 572.0 | $ 572.0 | $ 521.5 | ||