| Name | IndefiniteLivedInternationalSlotsAndRoutes |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | debit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Carrying amount, (original cost adjusted for any previously recognized amortization and impairment) as of the balance sheet date, of international slots, route authorities, airport operating and gate lease rights and related intangibles. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Indefinite-Lived International Slots and Routes | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |