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Leases - Narrative (Details) | 12 Months Ended
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Dec. 31, 2023 USD ($) aircraft | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items] |  |  |
Operating aircraft leases, minimum remaining lease term | 1 month |  |
Operating aircraft leases, maximum remaining lease term | 5 years |  |
Embraer E190 fleet transition | $ | $ 0 | $ 52,000,000 | $ 0
Facility leases, minimum lease term remaining | 8 months |  |
Facility leases, maximum lease term remaining | 15 years |  |
Minimum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Renewal lease term | 1 year |  |
Maximum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Renewal lease term | 2 years |  |
Aircraft |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Number of aircraft operated | 300 |  |
Number of aircraft accounted for under operating leases | 56 |  |
Finance lease, number of aircraft leases | 0 |  |
Number of aircraft having purchase options | 24 |  |

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- Definition Special items relating to the EMBRAER E190 fleet transition. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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