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Crewmember Retirement Plan (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Jan. 01, 2021	Jan. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage of compensation in cash			100.00%
Percentage of employees' pay			5.00%
Years of service			3 years
Percentage of company contribution to pilots retirement program	16.00%
Pilots retirement vesting period			3 years
Defined contribution plan, cost			$ 264	$ 271	$ 249
Retirement Plus
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage of employees' pay			3.00%
Retirement Non-elective Crewmember
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage of employees' pay		5.00%
Years of service		3 years
Percentage of increase in pay		8.00%

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- Definition

Defined Contribution Plan, Employer Matching Contribution, Percent Increase In Compensation

+ References

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- Definition

Defined contribution plan requisite service period for vesting.

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- Definition

Percentage of Company contribution to Pilots Retirement Program based on eligible pilot compensation

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- Definition

Vesting period for company matching contributions relating to pilots retirement program

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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- Definition

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