CARES Act, Payroll Support Program 2, Total Payment

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CARES Act, Payroll Support Program, Grant

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CARES Act, Payroll Support Program, Total Payment

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CARES Act, Secured Loans, Eligibility Amount

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No definition available.

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Number of Aircraft, Secured Debt Transactions

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The carrying amount, as of the date of the latest financial statement presented, of flight equipment which are owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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No definition available.

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- Definition

Proceeds from Sale Leaseback Transactions

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Sale Leaseback, Cash Proceeds, Financing

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Sale Leaseback, Cash Proceeds, Investing

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Amount of amortization expense attributable to debt issuance costs.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of warrants or rights outstanding.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The price per share of the conversion feature embedded in the debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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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.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation.

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Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.

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Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Long-term Debt, Short-term Borrowings and Finance Lease Obligations - Narrative (Details) $ / shares in Units, shares in Millions							1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 15, 2021 USD ($)	Jun. 17, 2021 USD ($)	May 06, 2021 USD ($) $ / shares shares	Jan. 15, 2021 USD ($) $ / shares shares	Jun. 17, 2020 USD ($)	Apr. 23, 2020 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) trading_day $ / shares	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Nov. 03, 2020 USD ($)	Sep. 29, 2020 USD ($) $ / shares shares	Aug. 31, 2020 USD ($) aircraft
Line of Credit Facility [Line Items]
Repayment of long-term debt and finance lease obligations										$ 1,775,000,000	$ 272,000,000
Pledged assets not separately reported flight equipment								$ 5,900,000,000		5,900,000,000
Interest expense								2,000,000		4,000,000
Debt issuance costs amortization								1,000,000		2,000,000
Repayments of loan	$ 118,000,000
CARES act, payroll support program, total payment						$ 963,000,000
CARES act, payroll support program, grant						$ 704,000,000
Debt instrument, term						10 years
Class of warrant or right, outstanding (in shares) \| shares						2.7								1.2
Class of warrant or right, exercise price of warrants or rights (in dollars per share) \| $ / shares						$ 9.50								$ 9.50
Warrants and rights outstanding, term														5 years
Line of credit, current								0		0
CARES act, secured loans, eligibility amount													$ 1,900,000,000
Proceeds from sale leaseback transactions									$ 327,000,000			$ 563,000,000
Proceeds from sale-leaseback transactions									118,000,000	0	236,000,000	354,000,000
Proceeds from sale-leaseback transactions									209,000,000	0	209,000,000	209,000,000
Losses on sale-leaseback transactions								$ 0	$ (106,000,000)	0	$ (106,000,000)	$ 106,000,000
Payroll Support 2 Payments
Line of Credit Facility [Line Items]
CARES act, payroll support program, grant				$ 436,000,000
Debt instrument, term				10 years
Class of warrant or right, outstanding (in shares) \| shares				1.0
CARES Act, Payroll Support Program 2, Total Payment				$ 580,000,000
Class of warrant or right, exercise price of warrants or rights (in dollars per share) \| $ / shares				$ 14.43
Payroll Support 3 Payments
Line of Credit Facility [Line Items]
CARES act, payroll support program, total payment			$ 541,000,000
CARES act, payroll support program, grant			$ 409,000,000
Debt instrument, term			10 years
Class of warrant or right, outstanding (in shares) \| shares			0.7
Class of warrant or right, exercise price of warrants or rights (in dollars per share) \| $ / shares			$ 19.90
Long-term Debt
Line of Credit Facility [Line Items]
Repayment of long-term debt and finance lease obligations										1,800,000,000
Issuance of debt										$ 1,000,000,000
Convertible Senior Notes Due 2026 \| Senior Notes
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage							0.50%	0.50%		0.50%
Debt instrument, face amount							$ 750,000,000
Proceeds from offering							$ 734,000,000
Debt instrument, convertible ratio							0.0385802
Debt instrument, convertible, conversion price (in dollars per share) \| $ / shares							$ 25.92
Convertible Senior Notes Due 2026 \| Senior Notes \| Debt Instrument, Redemption, Period One
Line of Credit Facility [Line Items]
Debt instrument, redemption price, percentage							100.00%
Trading days \| trading_day							20
Convertible Senior Notes Due 2026 \| Senior Notes \| Debt Instrument, Redemption, Period Two
Line of Credit Facility [Line Items]
Debt instrument, redemption price, percentage							130.00%
Trading days \| trading_day							30
Floating rate term loan credit facility, due through 2024 \| Long-term Debt
Line of Credit Facility [Line Items]
Repayments of loan		$ 722,000,000
Line of credit facility, outstanding balance								$ 0		$ 0
Fixed rate enhanced equipment notes, 2020-1A and B \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, face amount															$ 808,000,000
Fixed rate enhanced equipment notes, 2020-1A and B \| Long-term Debt \| Airbus A321
Line of Credit Facility [Line Items]
Secured debt \| aircraft															24
2020-1 Series A, due through 2032 \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage															4.00%
Debt instrument, face amount															$ 636,000,000
2020-1 Series B, due through 2028 \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage															7.75%
Debt instrument, face amount															$ 172,000,000
2019-1 Series B, due through 2027 \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage															8.00%
Debt instrument, face amount															$ 115,000,000
2019-1 Series B, due through 2027 \| Long-term Debt \| Airbus A321
Line of Credit Facility [Line Items]
Secured debt \| aircraft															25
US Department of Treasury \| Unsecured Debt
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage						1.00%
Debt instrument, face amount						$ 259,000,000
US Department of Treasury \| Unsecured Debt \| Payroll Support 2 Payments
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage				1.00%
Debt instrument, face amount				$ 144,000,000
US Department of Treasury \| Unsecured Debt \| Payroll Support 3 Payments
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage			1.00%
Debt instrument, face amount			$ 132,000,000
US Department of Treasury \| Unsecured Debt \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate						2.00%
US Department of Treasury \| Unsecured Debt \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Payroll Support 2 Payments
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate				2.00%
US Department of Treasury \| Unsecured Debt \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Payroll Support 3 Payments
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate			2.00%
Barclays \| Floating rate term loan credit facility, due through 2024 \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, face amount					$ 750,000,000
Barclays \| Floating rate term loan credit facility, due through 2024 \| London Interbank Offered Rate (LIBOR) \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate					1.00%
US Department of Treasury \| Secured CARES Act Loan, due through 2025 \| Long-term Debt
Line of Credit Facility [Line Items]
Debt instrument, face amount														$ 115,000,000
Citibank \| Citibank line of credit, due through 2023 \| Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, outstanding balance								0		0
Line of credit, current								550,000,000		550,000,000
Morgan Stanley \| Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity								$ 200,000,000		$ 200,000,000