Defined Contribution 401(k) Plan (Details) $ in Millions			1 Months Ended	12 Months Ended
	Jan. 01, 2024	Mar. 01, 2018	Mar. 31, 2022	Dec. 31, 2022 USD ($) definedContributionPlan	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Contribution Plan Disclosure [Line Items]
Defined contribution 401(k) plan, number of plans | definedContributionPlan				3
Defined contribution 401(k) plan, requisite service period				60 days
Defined contribution 401(k) plan, requisite age				21 years
Defined contribution 401(k) plan, matching contributions made in period | $				$ 88.9	$ 72.3	$ 58.6
Pilots’ Retirement Savings Plan
Defined Contribution Plan Disclosure [Line Items]
Defined contribution 401(k) plan, employer contribution, percent of employees' gross pay, initial percentage		11.00%
Defined contribution 401(k) plan, employer contribution, percent of employees' gross pay, annual percentage increase				1.00%
Defined contribution 401(k) plan, employer contribution, percent of employees' gross pay, final percentage			15.00%
Pilots’ Retirement Savings Plan | Forecast
Defined Contribution Plan Disclosure [Line Items]
Defined contribution 401(k) plan, employer contribution, percent of employees' gross pay, annual percentage increase	16.00%