Commitments - Additional Information (Details) $ in Millions	3 Months Ended
	Aug. 31, 2022 USD ($) AirCraft
Other Aircraft Commitments Disclosure [Abstract]
Deposit and Progress Payments	$ 803
Lessee Disclosure [Abstract]
Additional leases not yet commenced, undiscounted future payments	$ 2,200
Minimum [Member]
Lessee Disclosure [Abstract]
Operating lease commencement date	2023
Maximum [Member]
Lessee Disclosure [Abstract]
Operating lease commencement date	2024
B767F [Member]
Other Aircraft Commitments Disclosure [Abstract]
Conditional Aircraft Commitments | AirCraft	2