Commitments - Additional Information (Details) $ in Millions	3 Months Ended	6 Months Ended
	Aug. 31, 2021 air-craft	Nov. 30, 2021 USD ($) air-craft
Other Aircraft Commitments Disclosure [Abstract]
Deposit and Progress Payments | $		$ 629
Lessee Disclosure [Abstract]
Additional leases not yet commenced, undiscounted future payments | $		$ 2,500
Minimum [Member]
Lessee Disclosure [Abstract]
Operating lease commencement date		2022
Maximum [Member]
Lessee Disclosure [Abstract]
Operating lease commencement date		2023
B777F [Member]
Other Aircraft Commitments Disclosure [Abstract]
Conditional Aircraft Commitments		2
B767F [Member]
Other Aircraft Commitments Disclosure [Abstract]
Conditional Aircraft Commitments		2
Number of additional aircraft agreed to purchase options exercised	20
B767F Aircraft Delivered in 2025 [Member]
Other Aircraft Commitments Disclosure [Abstract]
Number of aircrafts rescheduled delivery	10
Aircraft expected to be delivered, latest fiscal year	2025
B767F Aircraft Delivered in 2024 [Member]
Other Aircraft Commitments Disclosure [Abstract]
Number of aircrafts rescheduled delivery	10
Aircraft expected to be delivered, earliest fiscal year	2024