Investments in Joint Ventures - Schedule of Results of Operations of the Joint Venture (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Operating Revenue and Expenses | ||||
| Revenues | $ 258.5 | $ 263.7 | $ 521.3 | $ 543.6 |
| Expenses | 157.9 | 170.1 | 326.6 | 358.0 |
| Excess of revenues over expenses | $ 100.6 | $ 93.6 | $ 194.7 | $ 185.6 |