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Commitments and Contingencies - Summary of Commitments Related to the Acquisition of Aircraft (Details)
$ in Billions
Dec. 31, 2023
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2024 $ 12.1
2025 7.9
2026 6.0
2027 4.5
2028 6.1
After 2028 23.5
Total $ 60.1