ORGANIZATION & BUSINESS - Schedule of Aircraft (Details)	Jun. 30, 2026 aircraft
Product Information [Line Items]
Number of aircraft	275
Total aircraft	283
Spare aircraft	8
E170
Product Information [Line Items]
Number of aircraft	24
E175
Product Information [Line Items]
Number of aircraft	251
American Airlines
Product Information [Line Items]
Number of aircraft	92
Number of aircraft leased	31
American Airlines \| E170
Product Information [Line Items]
Number of aircraft	13
American Airlines \| E175
Product Information [Line Items]
Number of aircraft	79
Delta Air Lines
Product Information [Line Items]
Number of aircraft	57
Delta Air Lines \| E170
Product Information [Line Items]
Number of aircraft	11
Delta Air Lines \| E175
Product Information [Line Items]
Number of aircraft	46
United Airlines
Product Information [Line Items]
Number of aircraft	126
United Airlines \| E170
Product Information [Line Items]
Number of aircraft	0
United Airlines \| E175
Product Information [Line Items]
Number of aircraft	126

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.

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