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Crewmember Retirement Plan (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020
Retirement Benefits [Abstract] |  |
Percentage of employees pay | 100.00% |
Years of service | 5.00% |
Percentage of compensation in cash | 3 years |
Percentage of employees' pay for profit sharing match | 5.00% |
Period of discretionary contribution | 3 years |
Percentage of FAA licensed employees gross pay for which ER can contribute discretionary profit sharing contribution to plan | 3.00% |
Percentage of company contribution to pilots retirement program | 16.00% |
Pilots retirement vesting period | 3 years |
Percent of eligible pre-tax profits the company contributes to profit sharing until the pre-tax margin is 18% | 10.00% |
Profit sharing calculation trigger, pretax margin | 18.00% |
Percentage of eligible pre-tax profits the company contributes to profit sharing when pre-tax margin is above 18% | 20.00% |
Contribution to employee retirement plan | $ 100 | $ 92

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- Definition Percentage of employees' gross pay for which the employer can contribute a discretionary profit sharing contribution to the Plan. + References No definition available. + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to the Plan. + References No definition available. + Details
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- Definition Percentage of Eligible Pre-tax Profits the Company Contributes to Profit Sharing when Pre-tax Margin is above 18% + References No definition available. + Details
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- Definition Percentage of FAA licensed employees gross pay for which ER can contribute discretionary profit sharing contribution to plan + References No definition available. + Details
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- Definition Percent of Eligible Pre-tax Profits the Company Contributes to Profit Sharing until the Pre-tax Margin is 18% + References No definition available. + Details
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- Definition Vesting period for company matching contributions relating to pilots retirement program + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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