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Commitments - Flight Equipment Commitments (Details) $ in Millions | Dec. 31, 2024 USD ($) aircraft
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Unrecorded Unconditional Purchase Obligation [Line Items] |
2025 | $ | $ 981
2026 | $ | 690
2027 | $ | 288
2028 | $ | 410
2029 | $ | 321
Thereafter | $ | 3,754
Total | $ | $ 6,444
2025 | 24
2026 | 17
2027 | 5
2028 | 9
2029 | 7
Thereafter | 44
Total | 106
Airbus A220 |
Unrecorded Unconditional Purchase Obligation [Line Items] |
2025 | 20
2026 | 17
2027 | 5
2028 | 9
2029 | 7
Thereafter | 0
Total | 58
Number of available aircraft | 20
Airbus A321neo |
Unrecorded Unconditional Purchase Obligation [Line Items] |
2025 | 4
2026 | 0
2027 | 0
2028 | 0
2029 | 0
Thereafter | 44
Total | 48

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- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 440 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482648/440-10-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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