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Equity Method Investment in ARO - Schedule of Related Parties (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Jun. 30, 2024
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Accounts receivable, net | $ 513.7 |  | $ 513.7 |  | $ 571.2 |
Contract with Customer, Liability | 136.8 |  | 136.8 |  | 158.6 |
Accounts payable - trade | 327.1 |  | 327.1 |  | 328.5 |
Carrying value | 314.7 |  | 314.7 |  | 296.2 |
Paid-in-Kind Interest |  |  |  |  | 24.6 |
ARO |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Accounts receivable, net | 18.7 |  | 18.7 |  | 16.5 |
Contract with Customer, Liability | 12.2 |  | 12.2 |  | 14.1 |
Accounts payable - trade | 59.7 |  | 59.7 |  | 43.1 |
Principal amount | 376.6 |  | 376.6 |  | 376.6 |
Discount | (61.9) |  | (61.9) |  | (80.4) |
Carrying value | 314.7 |  | 314.7 |  | 296.2 |
Interest receivable | 18.0 |  | 18.0 |  | $ 0.0 |
Interest income | 10.0 | $ 6.2 | 18.0 | $ 18.4 |  |
Accretion of Discount on the Notes Receivable | 6.2 | 6.2 | 18.5 | 33.8 |  |
Total interest income on the Notes Receivable from ARO | $ 16.2 | $ 12.4 | $ 36.5 | 52.2 |  |
ARO | Net Settlement Agreement |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Accounts payable - trade |  |  |  |  |  | $ 50.7
Accretion of Discount on the Notes Receivable |  |  |  | $ 13.9 |  |

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