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Commitments - Additional Information (Details)
$ in Millions
 3 Months Ended
Aug. 31, 2023
USD ($)
Other Aircraft Commitments Disclosure [Abstract]  
Deposit and progress payments $ 685
Lessee Disclosure [Abstract]  
Additional leases not yet commenced, undiscounted future payments $ 1,800
Minimum [Member]  
Lessee Disclosure [Abstract]  
Operating lease commencement date 2024
Maximum [Member]  
Lessee Disclosure [Abstract]  
Operating lease commencement date 2027