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Fresh Start Accounting - Change in Successor Additional Paid-in Capital (Details) - USD ($) $ in Millions | Feb. 09, 2021 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Class of Stock [Line Items] |  |  |
Issuance of Successor equity associated with the Rights Offering and Backstop Commitment | $ 2,371 |  |
Issuance of Successor equity to holders of the FLLO Term Loan, incremental to the Rights Offering and Backstop Commitment | 783 |  |
Issuance of Successor equity to holders of the Second Lien Notes, incremental to the Rights Offering and Backstop Commitment | 124 |  |
Issuance of Successor equity to holders of the unsecured senior notes | 45 |  |
Issuance of Successor equity to holders of allowed general unsecured claims | 8 |  |
Total change in Successor common stock and additional paid-in capital | 3,586 |  |
Less: par value of Successor common stock | (1) | $ (1) | $ (1)
Change in Successor additional paid-in capital | 3,585 |  |
Class A Warrants |  |  |
Class of Stock [Line Items] |  |  |
Warrants | 93 |  |
Class B Warrants |  |  |
Class of Stock [Line Items] |  |  |
Warrants | 94 |  |
Class C Warrants |  |  |
Class of Stock [Line Items] |  |  |
Warrants | $ 68 |  |

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