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Chapter 11 Proceedings and Ability to Continue as a Going Concern (Tables) | 12 Months Ended
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Dec. 31, 2023
Reorganizations [Abstract] |
Schedule Of Reorganization Items In Consolidated Statement of Operations And Cash Flow |
|  | Successor |  |  | Predecessor
|  | Year Ended December 31, 2022 |  | Eight Months Ended December 31, 2021 |  |  | Four Months Ended April 30, 2021
Professional fees |  | $ | 2.4 |  |  | $ | 17.2 |  |  |  | $ | 93.4 |
Contract items |  | — |  |  | (1.7) |  |  |  | 3.9 |
Reorganization items (fees) |  | 2.4 |  |  | 15.5 |  |  |  | 97.3 |
Contract items |  | — |  |  | — |  |  |  | 0.5 |
Backstop premium |  | — |  |  | — |  |  |  | 30.0 |
Gain on settlement of liabilities subject to compromise |  | — |  |  | — |  |  |  | (6,139.0) |
Issuance of Common Shares for backstop premium |  | — |  |  | — |  |  |  | 29.1 |
Issuance of Common Shares to the Shipyard |  | — |  |  | — |  |  |  | 5.4 |
Write-off of unrecognized share-based compensation expense |  | — |  |  | — |  |  |  | 16.0 |
Impact of newbuild contract amendments |  | — |  |  | — |  |  |  | 350.7 |
Loss on fresh start adjustments |  | — |  |  | — |  |  |  | 9,194.6 |
Reorganization items (non-cash) |  | — |  |  | — |  |  |  | 3,487.3 |
Total reorganization items, net |  | $ | 2.4 |  |  | $ | 15.5 |  |  |  | $ | 3,584.6 |
Reorganization items (fees) paid |  | $ | 2.4 |  |  | $ | 14.7 |  |  |  | $ | 59.0 |
Reorganization items (fees) unpaid |  | $ | — |  |  | $ | 0.8 |  |  |  | $ | 38.3 |

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