Defined Contribution 401(k) Plan (Details) $ in Millions		1 Months Ended	2 Months Ended	12 Months Ended
	Mar. 01, 2018	Mar. 31, 2022	Feb. 28, 2018	Dec. 31, 2021 USD ($) definedContributionPlan	Dec. 31, 2020 USD ($)	Dec. 31, 2019 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 | $				$ 72.3	$ 58.6	$ 51.1
Pilots’ Retirement Savings Plan
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, employer matching contribution, percent of match			100.00%
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%
Pilots’ Retirement Savings Plan | Forecast
Defined Contribution Plan Disclosure [Line Items]
Defined contribution 401(k) plan, employer contribution, percent of employees' gross pay, final percentage		15.00%
Pilots’ Retirement Savings Plan | Maximum
Defined Contribution Plan Disclosure [Line Items]
Defined contribution 401(k) plan, maximum employer contribution percent of the employee’s annual compensation			9.00%