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Commitments and Contingencies - Aircraft Commitments by Year (Details)
$ in Millions
Sep. 30, 2022
USD ($)
Future aircraft purchase commitments:  
Total $ 19,900
Future aircraft purchase commitments  
Future aircraft purchase commitments:  
Three months ending December 31, 2022 1,380
2023 3,440
2024 3,640
2025 4,230
2026 3,700
Thereafter 3,500
Total $ 19,890