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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Debt Instrument, Basis Spread on Variable Rate, Floor

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Debt Instrument, Net Amount

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Line Of Credit Facility, Maximum Borrowing Capacity, Increase Limit

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Number Of Aircraft, Secured Debt Transactions

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Number Of New Aircraft Held As Security

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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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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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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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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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Face amount or stated value per share of common stock.

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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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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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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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Amount, after accumulated amortization, of debt premium.

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Gross amount of debt extinguished.

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year.

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Amount, after accumulated amortization, of right-of-use asset from finance lease.

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Amount of accumulated amortization of right-of-use asset from finance lease.

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

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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

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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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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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

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Period Type:	duration

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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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	12 Months Ended
	Oct. 21, 2022 USD ($)	May 06, 2021 USD ($) $ / shares shares	Jan. 15, 2021 USD ($) $ / shares shares	Apr. 23, 2020 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) day	Dec. 31, 2022 USD ($) aircraft $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($)	Jul. 28, 2022 $ / shares	May 16, 2022 USD ($) $ / shares	Mar. 31, 2022 USD ($) $ / shares	Sep. 29, 2020	Aug. 31, 2020 USD ($) aircraft	Dec. 31, 2019 USD ($) aircraft	Nov. 30, 2019 USD ($) aircraft	Dec. 31, 2018 USD ($) aircraft	Mar. 30, 2014 USD ($) aircraft	Apr. 30, 2013 USD ($)
Debt Instrument [Line Items]
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
Class of warrant or right, exercise price of warrants or rights (in dollars per share) \| $ / shares				$ 9.50
Warrants and rights outstanding, term												5 years
Proceeds from sale leaseback transactions								$ 563,000,000
Proceeds from sale-leaseback transactions						$ 0	$ 0	354,000,000
Proceeds from sale-leaseback transactions						0	0	209,000,000
Losses on sale-leaseback transactions						0	0	106,000,000
Finance lease assets						2,000,000	3,000,000
Finance lease, right-of-use asset, accumulated amortization							1,000,000	1,000,000
2023						2,000,000
2022							1,000,000
Interest expense						7,000,000	6,000,000
Debt issuance costs amortization						3,000,000	3,000,000
Debt extinguishment expense							50,000,000
Pledged assets not separately reported flight equipment						6,200,000,000
Interest paid, including capitalized interest, operating and investing activities						$ 124,000,000	$ 180,000,000	139,000,000
Common stock, par value (in dollars per share) \| $ / shares						$ 0.01	$ 0.01
Spirit
Debt Instrument [Line Items]
Common stock, par value (in dollars per share) \| $ / shares									$ 0.0001	$ 0.0001
Acquisition price (in dollars per share) \| $ / shares									$ 33.50	$ 30.00
Morgan Stanley
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity						$ 200,000,000
Payroll Support 2 Payments
Debt Instrument [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		0.7	1.0
Class of warrant or right, exercise price of warrants or rights (in dollars per share) \| $ / shares		$ 19.90	$ 14.43
CARES Act, Payroll Support Program 2, Total Payment			$ 580,000,000
Payroll Support 3 Payments
Debt Instrument [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
Computer Equipment
Debt Instrument [Line Items]
Finance lease assets							$ 3,000,000	$ 4,000,000
2023						2,000,000	2,000,000
Line of Credit \| Revolving Credit Facility and Letter of Credit Facility \| Morgan Stanley
Debt Instrument [Line Items]
Long-term line of credit						0	$ 0
Fixed rate specialty bonds, due through 2036
Debt Instrument [Line Items]
Debt instrument, face amount																		$ 42,000,000
Debt instrument, net amount																		43,000,000
Debt instrument, unamortized premium																		$ 1,000,000
Fixed rate enhanced equipment notes, 2020-1A and B \| Long-term Debt
Debt Instrument [Line Items]
Debt instrument, face amount													$ 808,000,000		$ 772,000,000
2019-1 Series B, due through 2027 \| Long-term Debt
Debt Instrument [Line Items]
Debt instrument, face amount													$ 115,000,000
Debt instrument, interest rate, stated percentage													8.00%
2019-1 Series B, due through 2027 \| Long-term Debt \| Airbus A321
Debt Instrument [Line Items]
Number of aircraft, secured debt transactions \| aircraft													24		25
2020-1 Series A, due through 2032 \| Long-term Debt
Debt Instrument [Line Items]
Debt instrument, face amount													$ 636,000,000		$ 589,000,000
Debt instrument, interest rate, stated percentage													4.00%		2.75%
2020-1 Series B, due through 2028 \| Long-term Debt
Debt Instrument [Line Items]
Debt instrument, face amount													$ 172,000,000		$ 183,000,000
Debt instrument, interest rate, stated percentage													7.75%		2.95%
Fixed rate enhanced equipment notes, due through 2023
Debt Instrument [Line Items]
Debt instrument, face amount																	$ 226,000,000
Fixed rate enhanced equipment notes, due through 2023 \| Secured Debt \| A-320-200
Debt Instrument [Line Items]
Number of new aircraft held as security \| aircraft																	14
Fixed rate equipment notes, due through 2028
Debt Instrument [Line Items]
Debt instrument, face amount						$ 11,000,000								$ 219,000,000		$ 567,000,000
Fixed rate equipment notes, due through 2028 \| Secured Debt \| A-320
Debt Instrument [Line Items]
Number of new aircraft held as security \| aircraft														10		14
Fixed rate equipment notes, due through 2028 \| Secured Debt \| A-321
Debt Instrument [Line Items]
Number of new aircraft held as security \| aircraft														2		10
Fixed rate equipment notes, due through 2028 \| Secured Debt \| E190
Debt Instrument [Line Items]
Number of aircraft, secured debt transactions \| aircraft						5
Floating rate equipment notes, due through 2028
Debt Instrument [Line Items]
Debt instrument, face amount																$ 120,000,000
Floating rate equipment notes, due through 2028 \| Secured Debt \| A-320
Debt Instrument [Line Items]
Number of new aircraft held as security \| aircraft																6
Floating rate equipment notes, due through 2028 \| Secured Debt \| A-321
Debt Instrument [Line Items]
Number of new aircraft held as security \| aircraft																1
Unsecured Debt \| US Department of Treasury
Debt Instrument [Line Items]
Debt instrument, face amount				$ 259,000,000
Debt instrument, interest rate, stated percentage				1.00%
Unsecured Debt \| US Department of Treasury \| Payroll Support 2 Payments
Debt Instrument [Line Items]
Debt instrument, face amount			$ 144,000,000
Debt instrument, interest rate, stated percentage			1.00%
Unsecured Debt \| US Department of Treasury \| Payroll Support 3 Payments
Debt Instrument [Line Items]
Debt instrument, face amount		$ 132,000,000
Debt instrument, interest rate, stated percentage		1.00%
Unsecured Debt \| US Department of Treasury \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.00%
Unsecured Debt \| US Department of Treasury \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Payroll Support 2 Payments
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.00%
Unsecured Debt \| US Department of Treasury \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| Payroll Support 3 Payments
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.00%
Convertible Senior Notes Due 2026 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount					$ 750,000,000						$ 750,000,000
Debt instrument, interest rate, stated percentage					0.50%	0.50%					0.50%
Proceeds from offering					$ 734,000,000
Debt instrument, convertible ratio (in dollars per share) \| $ / shares											$ 25.92
Debt instrument, conversion ratio					0.0385802
Convertible Senior Notes Due 2026 \| Senior Notes \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage					100.00%
Trading days \| day					20
Convertible Senior Notes Due 2026 \| Senior Notes \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage					130.00%
Trading days \| day					30
Second Amended And Restated Agreement \| Line of Credit
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%
Line of credit facility, current borrowing capacity	$ 550,000,000
Increase in lending commitments	50,000,000
Line of credit facility, maximum borrowing capacity	$ 600,000,000
Variable rate	0.00%
Second Amended And Restated Agreement \| Line of Credit \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Senior Secured Bridge Facility \| Goldman Sachs Bank USA, Bank of America, N.A. and BofA Securities, Inc \| Spirit
Debt Instrument [Line Items]
Debt instrument, face amount										$ 3,500,000,000
Senior Secured Bridge Facility \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount										3,500,000,000
Senior Secured Bridge Facility \| Bridge Facility \| Goldman Sachs Bank USA, Bank of America, N.A. and BofA Securities, Inc \| Spirit
Debt Instrument [Line Items]
Debt instrument, face amount										$ 3,500,000,000