Investments in Joint Ventures - Schedule of Results of Operations of the Joint Venture (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Operating Revenue and Expenses | ||||
| Revenues | $ 261.3 | $ 267.4 | $ 782.6 | $ 811.0 |
| Expenses | 159.8 | 169.3 | 486.4 | 527.3 |
| Excess of revenues over expenses | $ 101.5 | $ 98.1 | $ 296.2 | $ 283.7 |