Prepaid Expenses and Other Current Assets - Additional Information (Details) $ in Millions	Jun. 30, 2026 USD ($)
Prepaid Expense and Other Assets, Current [Abstract]
Reclassification of deferred maintenance costs from other noncurrent assets to current assets	$ 1.7

Reclassification of deferred maintenance costs from other non-current assets to current assets.

No definition available.

Name:	jetmf_ReclassificationOfDeferredMaintenanceCostsFromOtherNoncurrentAssetsToCurrentAssets
Namespace Prefix:	jetmf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant