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Flight Equipment Held for Sale (Details) $ in Millions	Sep. 30, 2023 USD ($) aircraft	Dec. 31, 2022 USD ($) aircraft
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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Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.

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