Summary of Significant Accounting Policies - Rotable Assets and Equipment under Leases (Details)	12 Months Ended
May 31, 2023
Minimum
Rotable assets and equipment under leases
Period of short-term leases	1 month
Maximum
Rotable assets and equipment under leases
Period of short-term leases	12 months

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration