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Employee Related Cost Reductions, Percentage, Reduction In Work Hours, Management And Employee Groups

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Employee Related Cost Reductions, Percentage, Salary Reduction, Chief Executive Officer

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Employee Related Cost Reductions, Percentage, Salary Reduction, Company Officers

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Employee Related Cost Reductions, Voluntary Unpaid Leave

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Impact Of Global Pandemic

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Number Of Aircraft Removed From Active Service

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Number Of Employees Participating In Voluntary Early Retirement And Separation Programs

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Number Of Employees Tested For COVID-19

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Proceeds from Government Assistance, Payroll Support Program, CARES Act

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Reduction In Planned Capital Expenditures

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Temporary Parking Of Fleet, Percentage

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Year-Over-Year Decrease In System Capacity, Percentage

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The carrying amount on the books of the entity of the impaired asset to be disposed of by a method other than sale.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Impact of the COVID-19 Pandemic - Narrative (Details) $ in Millions		3 Months Ended		9 Months Ended
	Oct. 13, 2020 USD ($)	Dec. 31, 2020	Sep. 30, 2020 USD ($) employee	Dec. 31, 2020	Sep. 30, 2020 USD ($) employee aircraft	Sep. 30, 2019 USD ($)
Impact Of Global Pandemic [Line Items]
Number of employees tested for COVID-19 \| employee			40,000		40,000
Year-over-year decrease in system capacity (percent)			60.00%
Percentage of fleet temporarily parked (percent)					40.00%
Number of aircraft removed from active service \| aircraft					500
Number of employees volunteering for leave \| employee					50,000
Number of pilots notified for potential furlough \| employee					1,700
Cash, cash equivalents, short-term investments, and amounts available under revolving credit facilities			$ 21,600		$ 21,600
Financing transactions completed					27,000
Proceeds from issuance of debt					22,481	$ 500
Proceeds from payroll support program, CARES Act					5,600
Reduction in planned capital expenditures for the year					3,300
Flight equipment and other long-lived assets			26,600		26,600
Retired aircraft
Impact Of Global Pandemic [Line Items]
Cumulative net book value of retired aircraft			520		$ 520
Bonds \| NYTDC Special Facilities Revenue Bonds, Series 2020
Impact Of Global Pandemic [Line Items]
Proceeds from issuance of debt			1,500
Secured Debt \| SkyMiles program
Impact Of Global Pandemic [Line Items]
Proceeds from issuance of debt			9,000
Revolving Credit Facility
Impact Of Global Pandemic [Line Items]
Repayments of revolving credit facilities			$ 400
Subsequent event \| 2020 Secured Term Loan Facility \| Secured Term Loan
Impact Of Global Pandemic [Line Items]
Repayments of term loan	$ 3,000
Subsequent event \| Revolving Credit Facility
Impact Of Global Pandemic [Line Items]
Repayments of revolving credit facilities	$ 2,600
Minimum
Impact Of Global Pandemic [Line Items]
Voluntary unpaid leave duration					30 days
Maximum
Impact Of Global Pandemic [Line Items]
Voluntary unpaid leave duration					12 months
Voluntary early retirement and separation programs
Impact Of Global Pandemic [Line Items]
Number of employees participating \| employee			18,000		18,000
Forecast
Impact Of Global Pandemic [Line Items]
Salary reduction for CEO (percent)				100.00%
Salary reduction for company officers (percent)				50.00%
Work hours reduction for management and most front-line employee work groups (percent)				25.00%
Forecast \| Minimum
Impact Of Global Pandemic [Line Items]
Year-over-year decrease in system capacity (percent)		40.00%
Forecast \| Maximum
Impact Of Global Pandemic [Line Items]
Year-over-year decrease in system capacity (percent)		45.00%
International
Impact Of Global Pandemic [Line Items]
Year-over-year decrease in system capacity (percent)			80.00%
Domestic
Impact Of Global Pandemic [Line Items]
Year-over-year decrease in system capacity (percent)			50.00%