Details for Selection
| Standard label: | Deferred Tax Assets, Frequent Flier Liability |
| Name: | us-gaap:DeferredTaxAssetsFrequentFlierLiability |
| Documentation: | The tax effect as of the balance sheet date of the amount of the estimated future tax deductions attributable to frequent flier obligations recognized for tax purposes which will reverse when recognized in accordance with generally accepted accounting principles. |
| Commentary: | |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As of (instant) |
| Balance type: | Debit |
| Object class: | [Concept] |