$LUV
SOUTHWEST AIRLINES CO Stock $luv

$luv Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000009238022000007 Filed on February 07, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$5.051B	$15.79B	$2.013B
YoY Change	150.92%	74.51%	-64.86%
Cost Of Revenue	$1.413B	$4.766B	$660.0M
YoY Change	114.09%	54.29%	-53.91%
Gross Profit	$3.638B	$11.02B	$1.353B
YoY Change	168.88%	85.0%	-68.52%
Gross Profit Margin	72.03%	69.82%	67.21%
Selling, General & Admin	$2.433B	$8.986B	$1.719B
YoY Change	41.54%	14.38%	-34.01%
% of Gross Profit	66.88%	81.51%	127.05%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$323.0M	$1.272B	$315.0M
YoY Change	2.54%	1.35%	0.64%
% of Gross Profit	8.88%	11.54%	23.28%
Operating Expenses	$3.428B	$12.25B	$2.555B
YoY Change	34.17%	11.74%	-29.67%
Operating Profit	$210.0M	$1.721B	-$1.169B
YoY Change	-117.96%	-145.1%	-275.79%
Interest Expense	-$108.0M	-$418.0M	-$100.0M
YoY Change	8.0%	48.23%	-10100.0%
% of Operating Profit	-51.43%	-24.29%
Other Income/Expense, Net	$6.000M	-$396.0M	-$63.00M
YoY Change	-109.52%	-10.0%
Pretax Income	$77.00M	$1.325B	-$1.331B
YoY Change	-105.79%	-131.13%	-299.85%
Income Tax	$9.000M	$348.0M	-$423.0M
% Of Pretax Income	11.69%	26.26%
Net Earnings	$68.00M	$977.0M	-$908.0M
YoY Change	-107.49%	-131.78%	-276.65%
Net Earnings / Revenue	1.35%	6.19%	-45.11%
Basic Earnings Per Share		$1.65	-$1.54
Diluted Earnings Per Share	$112.2K	$1.61	-$1.54
COMMON SHARES
Basic Shares Outstanding	591.9M shares	592.0M shares	590.3M shares
Diluted Shares Outstanding		609.0M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$15.50B	$15.50B	$13.33B
YoY Change	16.27%	16.27%	227.46%
Cash & Equivalents	$12.48B	$12.48B	$11.06B
Short-Term Investments	$3.024B	$3.024B	$2.271B
Other Short-Term Assets	$638.0M	$638.0M	$295.0M
YoY Change	116.27%	116.27%	2.79%
Inventory	$537.0M	$537.0M	$414.0M
Prepaid Expenses
Receivables	$58.00M	$490.0M	$46.00M
Other Receivables	$77.00M	$867.0M	$35.00M
Total Short-Term Assets	$18.04B	$18.04B	$15.17B
YoY Change	18.87%	18.87%	153.98%
LONG-TERM ASSETS
Property, Plant & Equipment	$14.84B	$16.43B	$15.83B
YoY Change	-6.25%	-7.28%	-7.01%
Goodwill	$970.0M		$970.0M
YoY Change	0.0%		0.0%
Intangibles	$295.0M		$295.0M
YoY Change	0.0%		-0.34%
Long-Term Investments
YoY Change
Other Assets	$882.0M	$587.0M	$722.0M
YoY Change	22.16%	37.47%	25.13%
Total Long-Term Assets	$18.28B	$18.28B	$19.42B
YoY Change	-5.83%	-5.83%	-2.54%
TOTAL ASSETS
Total Short-Term Assets	$18.04B	$18.04B	$15.17B
Total Long-Term Assets	$18.28B	$18.28B	$19.42B
Total Assets	$36.32B	$36.32B	$34.59B
YoY Change	5.01%	5.01%	33.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.282B	$368.0M	$931.0M
YoY Change	37.7%	35.29%	-40.85%
Accrued Expenses	$1.624B	$2.104B	$2.259B
YoY Change	-28.11%	-22.56%	29.16%
Deferred Revenue	$5.566B		$3.790B
YoY Change	46.86%		-14.97%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$453.0M	$453.0M	$220.0M
YoY Change	105.91%	105.91%	-73.14%
Total Short-Term Liabilities	$9.164B	$9.164B	$7.506B
YoY Change	22.09%	22.09%	-16.15%
LONG-TERM LIABILITIES
Long-Term Debt	$10.27B	$10.27B	$10.11B
YoY Change	1.61%	1.61%	447.72%
Other Long-Term Liabilities	$1.224B	$4.698B	$1.247B
YoY Change	-1.84%	-27.29%	76.63%
Total Long-Term Liabilities	$1.224B	$14.97B	$1.247B
YoY Change	-1.84%	-9.65%	76.63%
TOTAL LIABILITIES
Total Short-Term Liabilities	$9.164B	$9.164B	$7.506B
Total Long-Term Liabilities	$1.224B	$14.97B	$1.247B
Total Liabilities	$10.39B	$25.91B	$8.753B
YoY Change	18.68%	0.75%	-9.37%
SHAREHOLDERS EQUITY
Retained Earnings	$15.77B		$14.78B
YoY Change	6.75%		-17.65%
Common Stock	$5.112B		$5.079B
YoY Change	0.65%		112.6%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$10.86B		$10.88B
YoY Change	-0.14%		4.16%
Treasury Stock Shares	296.0M shares		297.6M shares
Shareholders Equity	$10.41B	$10.41B	$8.876B
YoY Change
Total Liabilities & Shareholders Equity	$36.32B	$36.32B	$34.59B
YoY Change	5.01%	5.01%	33.57%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$68.00M	$977.0M	-$908.0M
YoY Change	-107.49%	-131.78%	-276.65%
Depreciation, Depletion And Amortization	$323.0M	$1.272B	$315.0M
YoY Change	2.54%	1.35%	0.64%
Cash From Operating Activities	$247.0M	$2.322B	-$596.0M
YoY Change	-141.44%	-306.03%	-172.33%
INVESTING ACTIVITIES
Capital Expenditures	-$183.0M	-$511.0M	-$90.00M
YoY Change	103.33%	-0.78%	-65.52%
Acquisitions
YoY Change
Other Investing Activities	$0.00	-$753.0M	$181.0M
YoY Change	-100.0%		-55.31%
Cash From Investing Activities	-$183.0M	-$1.264B	$91.00M
YoY Change	-301.1%	7800.0%	-36.81%
FINANCING ACTIVITIES
Cash Dividend Paid		$0.00
YoY Change		-100.0%
Common Stock Issuance & Retirement, Net		$0.00
YoY Change		-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-564.0M	$359.0M	-541.0M
YoY Change	4.25%	-96.28%	-40.42%
NET CHANGE
Cash From Operating Activities	247.0M	$2.322B	-596.0M
Cash From Investing Activities	-183.0M	-$1.264B	91.00M
Cash From Financing Activities	-564.0M	$359.0M	-541.0M
Net Change In Cash	-500.0M	$1.417B	-1.046B
YoY Change	-52.2%	-83.36%	-1843.33%
FREE CASH FLOW
Cash From Operating Activities	$247.0M	$2.322B	-$596.0M
Capital Expenditures	-$183.0M	-$511.0M	-$90.00M
Free Cash Flow	$430.0M	$2.833B	-$506.0M
YoY Change	-184.98%	-562.91%	-146.64%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000092380
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
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CY2021	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201601Member
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#FlightEquipmentGross
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#FlightEquipmentGross
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligationsCurrent
CY2020Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligationsCurrent
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligations
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligations
CY2021	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201601Member
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	1-7259
CY2021	dei	Entity Registrant Name EntityRegistrantName	SOUTHWEST AIRLINES CO.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	TX
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	74-1563240
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	P.O. Box 36611
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75235-1611
CY2021	dei	City Area Code CityAreaCode	214
CY2021	dei	Local Phone Number LocalPhoneNumber	792-4000
CY2021	dei	Security12b Title Security12bTitle	Common Stock ($1.00 par value)
CY2021	dei	Trading Symbol TradingSymbol	LUV
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
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CY2021	dei	Entity Small Business EntitySmallBusiness	false
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CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-396000000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-440000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	0	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1325000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-4256000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2957000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	348000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1182000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	657000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	977000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-3074000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2300000000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.65
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.44
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.28
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.61
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.44
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.27
CY2021	us-gaap	Net Income Loss NetIncomeLoss	977000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-3074000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2300000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-25000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	15000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	9000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-84000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	48000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	29000000	USD
CY2021	luv	Other Comprehensive Income Other Tax OtherComprehensiveIncomeOtherTax	-13000000	USD
CY2020	luv	Other Comprehensive Income Other Tax OtherComprehensiveIncomeOtherTax	7000000	USD
CY2019	luv	Other Comprehensive Income Other Tax OtherComprehensiveIncomeOtherTax	8000000	USD
CY2021	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	-47000000	USD
CY2020	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	25000000	USD
CY2019	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	26000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	513000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-44000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-81000000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1490000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-3118000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2219000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	9853000000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	2000000000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	27000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	55000000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.700
CY2019	us-gaap	Dividends Cash DividendsCash	377000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2219000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	9832000000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	451000000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2224000000	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	34000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	17000000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.180
CY2020	us-gaap	Dividends Cash DividendsCash	94000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	40000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	-392000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-3118000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	8876000000	USD
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	37000000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	58000000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	45000000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Subsequent Adjustments AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments	-92000000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1490000000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	10414000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	977000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-3074000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2300000000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1272000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1255000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1219000000	USD
CY2021	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-12000000	USD
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-32000000	USD
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	15000000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-15000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	21000000	USD
CY2020	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	716000000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	55000000	USD
CY2021	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	0	USD
CY2020	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	222000000	USD
CY2019	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	0	USD
CY2021	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-28000000	USD
CY2020	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	USD
CY2019	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	USD
CY2021	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	701000000	USD
CY2020	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	294000000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	94000000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-75000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-415000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-239000000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	38000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	231000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	298000000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	591000000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	1623000000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	440000000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-103000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-306000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-277000000	USD
CY2021	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	141000000	USD
CY2020	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	9000000	USD
CY2019	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	25000000	USD
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	28000000	USD
CY2020	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-95000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-108000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2322000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1127000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3987000000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	505000000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	515000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1027000000	USD
CY2021	luv	Supplier Proceeds SupplierProceeds	0	USD
CY2020	luv	Supplier Proceeds SupplierProceeds	-428000000	USD
CY2019	luv	Supplier Proceeds SupplierProceeds	-400000000	USD
CY2021	luv	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	0	USD
CY2020	luv	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	815000000	USD
CY2019	luv	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	0	USD
CY2021	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	6000000	USD
CY2020	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	0	USD
CY2019	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	0	USD
CY2021	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	5824000000	USD
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	5080000000	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2122000000	USD
CY2021	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	5071000000	USD
CY2020	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	4336000000	USD
CY2019	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	2446000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1264000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-303000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2294000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	5622000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	USD
CY2021	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2020	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	3683000000	USD
CY2019	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1000000000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2021	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	2300000000	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2021	luv	Proceeds From Payroll Support Program Loans And Warrants ProceedsFromPayrollSupportProgramLoansAndWarrants	1136000000	USD
CY2020	luv	Proceeds From Payroll Support Program Loans And Warrants ProceedsFromPayrollSupportProgramLoansAndWarrants	1016000000	USD
CY2019	luv	Proceeds From Payroll Support Program Loans And Warrants ProceedsFromPayrollSupportProgramLoansAndWarrants	0	USD
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	51000000	USD
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	48000000	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	40000000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	451000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2000000000	USD
CY2021Q4	luv	Repayments Of Other Long Term Debt And Finance Lease Obligations RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	612000000	USD
CY2020Q4	luv	Repayments Of Other Long Term Debt And Finance Lease Obligations RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	839000000	USD
CY2019	luv	Repayments Of Other Long Term Debt And Finance Lease Obligations RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	615000000	USD
CY2021	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	0	USD
CY2020	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	3683000000	USD
CY2019	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	0	USD
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1000000000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	188000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	372000000	USD
CY2021	luv	Payments Of Terminated Interest Rate Derivative Instruments PaymentsOfTerminatedInterestRateDerivativeInstruments	0	USD
CY2020	luv	Payments Of Terminated Interest Rate Derivative Instruments PaymentsOfTerminatedInterestRateDerivativeInstruments	59000000	USD
CY2019	luv	Payments Of Terminated Interest Rate Derivative Instruments PaymentsOfTerminatedInterestRateDerivativeInstruments	0	USD
CY2021	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	293000000	USD
CY2020	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2019	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2021	luv	Capitalized Financing Items CapitalizedFinancingItems	0	USD
CY2020	luv	Capitalized Financing Items CapitalizedFinancingItems	134000000	USD
CY2019	luv	Capitalized Financing Items CapitalizedFinancingItems	0	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	77000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	49000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-43000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	359000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9658000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2990000000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1417000000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	8515000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	694000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11063000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2548000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1854000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12480000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11063000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2548000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	336000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	212000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	88000000	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	445000000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	19000000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	779000000	USD
CY2021	luv	Flight Equipment Acquired Against Supplier Credit FlightEquipmentAcquiredAgainstSupplierCredit	569000000	USD
CY2020	luv	Flight Equipment Acquired Against Supplier Credit FlightEquipmentAcquiredAgainstSupplierCredit	0	USD
CY2019	luv	Flight Equipment Acquired Against Supplier Credit FlightEquipmentAcquiredAgainstSupplierCredit	0	USD
CY2021	luv	Assets Constructedfor Others During Period AssetsConstructedforOthersDuringPeriod	309000000	USD
CY2020	luv	Assets Constructedfor Others During Period AssetsConstructedforOthersDuringPeriod	145000000	USD
CY2019	luv	Assets Constructedfor Others During Period AssetsConstructedforOthersDuringPeriod	65000000	USD
CY2021	luv	Supplier Receivables SupplierReceivables	0	USD
CY2020	luv	Supplier Receivables SupplierReceivables	0	USD
CY2019	luv	Supplier Receivables SupplierReceivables	428000000	USD
CY2021	luv	Remeasurement Of Right Of Use Asset And Lease Liability RemeasurementOfRightOfUseAssetAndLeaseLiability	343000000	USD
CY2020	luv	Remeasurement Of Right Of Use Asset And Lease Liability RemeasurementOfRightOfUseAssetAndLeaseLiability	0	USD
CY2019	luv	Remeasurement Of Right Of Use Asset And Lease Liability RemeasurementOfRightOfUseAssetAndLeaseLiability	0	USD
CY2021	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	12000000	USD
CY2020	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	32000000	USD
CY2020	luv	Number Of Aircraft Under Accelerated Retirement NumberOfAircraftUnderAcceleratedRetirement	8	aircraft
CY2021	luv	Number Of Aircraft Under Accelerated Retirement NumberOfAircraftUnderAcceleratedRetirement	20	aircraft
CY2021	us-gaap	Advertising Expense AdvertisingExpense	185000000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	156000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	212000000	USD
CY2021Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	886000000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	697000000	USD
CY2021	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	213000000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	203000000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	177000000	USD
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">Approximately 82 percent of the Company’s full-time equivalent Employees are unionized and are covered by collective-bargaining agreements. A portion of the Company's unionized Employees, including its Pilots, Flight Attendants, Customer Service Agents, Ramp Agents, Dispatchers, Aircraft Appearance Technicians, and Meteorologists, which had contracts that became amendable on or before December 31, 2021, are in discussions on labor agreements. Those unionized Employee groups in discussions represent approximately 77 percent of the Company’s full-time equivalent Employees as of December 31, 2021. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">The Company attempts to minimize its concentration risk with regards to its cash, cash equivalents, and its investment portfolio. This is accomplished by diversifying and limiting amounts among different counterparties, the type of investment, and the amount invested in any individual security or money market fund.</span></div><div style="text-align:justify;text-indent:31.5pt"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">To manage risk associated with financial derivative instruments held, the Company selects and will periodically review counterparties based on credit ratings, limits its exposure to a single counterparty, and monitors the market position of the program and its relative market position with each counterparty. The Company also has agreements with counterparties containing early termination rights and/or bilateral collateral provisions whereby security is required if market risk exposure exceeds a specified threshold amount or credit ratings fall below certain levels. Collateral deposits provided to or held from counterparties serve to decrease, but not totally eliminate, the credit risk associated with the Company’s hedging program. See Note 11 for further information.</span></div><div style="text-align:justify;text-indent:31.5pt"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">As of December 31, 2021, the Company operated an all-Boeing fleet, all of which are variations of the Boeing 737. The Boeing 737 MAX aircraft ("MAX") are crucial to the Company’s growth plans and fleet modernization initiatives. On March 13, 2019, the FAA issued an emergency order for all U.S. airlines to ground the MAX aircraft, including the 34 MAX aircraft in the Company's fleet. On November 18, 2020, the FAA rescinded the emergency order and issued official requirements to enable U.S. airlines to return the MAX to service. The Company returned the MAX to revenue service on March 11, 2021, after the Company met all FAA requirements and its Pilots completed updated, MAX-related training.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">Boeing no longer manufactures versions of the 737 other than the MAX family of aircraft. If the MAX aircraft were to again become unavailable for the Company’s flight operations, the Company’s growth would be restricted unless and until it could procure and operate other types of aircraft from Boeing or another manufacturer, seller, or lessor, and the Company’s operations would be materially adversely affected. In particular, if the Company’s growth were to be dependent upon the introduction of a new aircraft make and model to the Company’s fleet, the Company would need to, among other things, (i) develop and implement new maintenance, operating, and training programs, (ii) secure extensive regulatory approvals, and (iii) implement new technologies. The requirements associated with </span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">operating a new aircraft make and model could take an extended period of time to fulfill and would likely impose substantial costs on the Company. A shift away from a single fleet type could also add complexity to the Company’s operations, present operational and compliance risks, and materially increase the Company's costs. Any of these events would have a material, adverse effect on the Company's business, operating results, and financial condition. The Company could also be materially adversely affected if the pricing or operational attributes of its aircraft were to become less competitive. See Note 17 for further information. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">The Company is also dependent on sole or limited suppliers for aircraft engines and certain other aircraft parts and services and would, therefore, also be materially adversely impacted in the event of the unavailability of, inadequate support for, or a mechanical or regulatory issue associated with, engines and other parts.</span></div><div style="text-align:justify;text-indent:31.5pt"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">The Company has historically entered into agreements with some of its co-brand, payment, and loyalty partners that contain exclusivity aspects which place certain confidential restrictions on the Company from entering into certain arrangements with other payment and loyalty partners. These arrangements generally extend for the terms of the agreements, none of which currently extend beyond October 31, 2030. Some of these agreements automatically renew on an annual basis, unless either party objects to such extension. None of these agreements are more than 10 years in length. The Company believes the financial benefits generated by the exclusivity aspects of these arrangements outweigh the risks involved with such agreements.</span></div>
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CY2020	us-gaap	Net Income Loss NetIncomeLoss	-3074000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	2300000000	USD
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CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	538000000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	15000000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	1000000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
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CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	539000000	shares
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CY2021Q4	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4789000000	USD
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CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7725000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7133000000	USD
CY2020Q4	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4447000000	USD
CY2019Q4	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	3385000000	USD
CY2021	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program Awarded Points ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgramAwardedPoints	2523000000	USD
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CY2020Q4	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4447000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7133000000	USD
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CY2021Q4	luv	Extended Emergency Time Off Other Noncurrent Liability ExtendedEmergencyTimeOffOtherNoncurrentLiability	0	USD
CY2020Q4	luv	Extended Emergency Time Off Other Noncurrent Liability ExtendedEmergencyTimeOffOtherNoncurrentLiability	57000000	USD
CY2021Q4	luv	Voluntary Separation Program2020 Other Noncurrent Liability VoluntarySeparationProgram2020OtherNoncurrentLiability	233000000	USD
CY2020Q4	luv	Voluntary Separation Program2020 Other Noncurrent Liability VoluntarySeparationProgram2020OtherNoncurrentLiability	321000000	USD
CY2021Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	330000000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	428000000	USD
CY2021Q4	us-gaap	Other Deferred Compensation Arrangements Liability Classified Noncurrent OtherDeferredCompensationArrangementsLiabilityClassifiedNoncurrent	369000000	USD
CY2020Q4	us-gaap	Other Deferred Compensation Arrangements Liability Classified Noncurrent OtherDeferredCompensationArrangementsLiabilityClassifiedNoncurrent	353000000	USD
CY2021Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	292000000	USD
CY2020Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	88000000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1224000000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1247000000	USD
CY2020Q4	luv	Vendor Prepayment VendorPrepayment	600000000	USD
CY2019Q1	luv	Number Of Aircraft Grounded Under Emergency Order NumberOfAircraftGroundedUnderEmergencyOrder	34	aircraft
CY2019Q1	luv	Number Of Aircraft Grounded Under Emergency Order NumberOfAircraftGroundedUnderEmergencyOrder	34	aircraft
CY2019Q4	luv	Number Of Aircraft Not Delivered Due To Grounding Under Emergency Order NumberOfAircraftNotDeliveredDueToGroundingUnderEmergencyOrder	41	aircraft
CY2020	luv	Supplier Proceeds SupplierProceeds	-428000000	USD
CY2021	dei	Auditor Name AuditorName	Ernst & Young, LLP
CY2021	dei	Auditor Location AuditorLocation	Dallas, TX
CY2021	dei	Auditor Firm AuditorFirmId	42

Files In Submission

Name	View Source	Status
0000092380-22-000007-index-headers.html	Edgar Link	pending
0000092380-22-000007-index.html	Edgar Link	pending
0000092380-22-000007.txt	Edgar Link	pending
0000092380-22-000007-xbrl.zip	Edgar Link	pending
boeinglogo.jpg	Edgar Link	pending
exhibit1018boeingpurchasea.htm	Edgar Link	pending
exhibit42indenture09_17x20.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
image_104.jpg	Edgar Link	pending
image_209.jpg	Edgar Link	pending
luv-12312021xex21.htm	Edgar Link	pending
luv-12312021xex23.htm	Edgar Link	pending
luv-12312021xex311.htm	Edgar Link	pending
luv-12312021xex312.htm	Edgar Link	pending
luv-12312021xex32.htm	Edgar Link	pending
luv-20211231.htm	Edgar Link	pending
luv-20211231.xsd	Edgar Link	pending
luv-20211231_cal.xml	Edgar Link	unprocessable
luv-20211231_def.xml	Edgar Link	unprocessable
luv-20211231_g1.jpg	Edgar Link	pending
luv-20211231_g2.jpg	Edgar Link	pending
luv-20211231_htm.xml	Edgar Link	completed
luv-20211231_lab.xml	Edgar Link	unprocessable
luv-20211231_pre.xml	Edgar Link	unprocessable
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$LUV
SOUTHWEST AIRLINES CO Stock $luv

2021 Q4 Form 10-K Financial Statement

#000009238022000007 Filed on February 07, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LUV SOUTHWEST AIRLINES CO Stock $luv

2021 Q4 Form 10-K Financial Statement

#000009238022000007 Filed on February 07, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LUV
SOUTHWEST AIRLINES CO Stock $luv