Collective Bargaining Agreements - Schedule Of Multiemployer Plans (Detail)	Sep. 20, 2023	Nov. 21, 2022	Oct. 01, 2022	Sep. 20, 2022	Nov. 01, 2020
Pilots [Member]
Multiemployer Plan [Line Items]
Multiemployer Plan, Pension, Significant, Employees Covered by Collective-Bargaining Arrangement (CBA) to All Entity's Employees under CBA, Percentage		43.50%
Dispatchers [Member]
Multiemployer Plan [Line Items]
Multiemployer Plan, Pension, Significant, Employees Covered by Collective-Bargaining Arrangement (CBA) to All Entity's Employees under CBA, Percentage					2.60%
Mechanics [Member]
Multiemployer Plan [Line Items]
Multiemployer Plan, Pension, Significant, Employees Covered by Collective-Bargaining Arrangement (CBA) to All Entity's Employees under CBA, Percentage	8.80%
Technical store clerks [Member]
Multiemployer Plan [Line Items]
Multiemployer Plan, Pension, Significant, Employees Covered by Collective-Bargaining Arrangement (CBA) to All Entity's Employees under CBA, Percentage				2.70%
Flight attendants [Member]
Multiemployer Plan [Line Items]
Multiemployer Plan, Pension, Significant, Employees Covered by Collective-Bargaining Arrangement (CBA) to All Entity's Employees under CBA, Percentage			17.40%