COMMITMENTS AND CONTINGENCIES - Employees Under Collective Bargaining Agreements (Details)	Dec. 31, 2023 employee
Other Commitments [Line Items]
Approximate Number of Employees Represented	103,000
Delta Pilots
Other Commitments [Line Items]
Approximate Number of Employees Represented	16,960
Delta Flight Superintendents (Dispatchers)
Other Commitments [Line Items]
Approximate Number of Employees Represented	490
Endeavor Pilots
Other Commitments [Line Items]
Approximate Number of Employees Represented	1,530
Endeavor Flight Attendants
Other Commitments [Line Items]
Approximate Number of Employees Represented	1,600