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Flight Equipment Held for Sale (Details) $ in Millions | Sep. 30, 2023 USD ($) aircraft | Dec. 31, 2022 USD ($) aircraft
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Disposal Group, Held-for-sale, Not Discontinued Operations | Thirteen Aircrafts |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of aircrafts | 13 |
Carrying value of assets held for sale | $ | $ 669.9 |
Disposal Group, Held-for-sale, Not Discontinued Operations | Ten Aircrafts |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of aircrafts | 10 |
Purchase deposits | $ | $ 639.7 |
Disposal Group, Held-for-sale, Not Discontinued Operations | Four Aircrafts |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of aircrafts |  | 4
Carrying value of assets held for sale | $ |  | $ 153.5
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Eighteen Aircrafts |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of aircrafts | 18 |

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