$LUV
SOUTHWEST AIRLINES CO Stock $luv

$luv Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000009238021000160 Filed on October 26, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2021 Q2
Revenue	$5.051B	$4.679B	$4.008B
YoY Change	150.92%	160.96%	297.62%
Cost Of Revenue	$1.413B	$1.366B	$1.206B
YoY Change	114.09%	98.84%	126.69%
Gross Profit	$3.638B	$3.313B	$2.802B
YoY Change	168.88%	199.55%	488.66%
Gross Profit Margin	72.03%	70.81%	69.91%
Selling, General & Admin	$2.433B	$2.372B	$2.047B
YoY Change	41.54%	27.32%	10.41%
% of Gross Profit	66.88%	71.6%	73.05%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$323.0M	$322.0M	$315.0M
YoY Change	2.54%	1.9%	0.64%
% of Gross Profit	8.88%	9.72%	11.24%
Operating Expenses	$3.428B	$3.356B	$2.948B
YoY Change	34.17%	25.88%	12.99%
Operating Profit	$210.0M	$733.0M	$594.0M
YoY Change	-117.96%	-151.95%	-152.71%
Interest Expense	-$108.0M	-$104.0M	-$106.0M
YoY Change	8.0%	8.33%	32.5%
% of Operating Profit	-51.43%	-14.19%	-17.85%
Other Income/Expense, Net	$6.000M	-$133.0M	-$92.00M
YoY Change	-109.52%	1.53%	-17.86%
Pretax Income	$77.00M	$600.0M	$502.0M
YoY Change	-105.79%	-138.91%	-140.52%
Income Tax	$9.000M	$154.0M	$154.0M
% Of Pretax Income	11.69%	25.67%	30.68%
Net Earnings	$68.00M	$446.0M	$348.0M
YoY Change	-107.49%	-138.55%	-138.03%
Net Earnings / Revenue	1.35%	9.53%	8.68%
Basic Earnings Per Share		$0.75	$0.59
Diluted Earnings Per Share	$112.2K	$0.73	$0.57
COMMON SHARES
Basic Shares Outstanding	591.9M shares	592.0M shares	591.0M shares
Diluted Shares Outstanding		607.0M shares	615.0M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2021 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$15.50B	$16.00B	$16.88B
YoY Change	16.27%	9.9%	16.73%
Cash & Equivalents	$12.48B	$12.98B	$14.12B
Short-Term Investments	$3.024B	$3.024B	$2.751B
Other Short-Term Assets	$638.0M	$560.0M	$521.0M
YoY Change	116.27%	125.81%	133.63%
Inventory	$537.0M	$511.0M	$464.0M
Prepaid Expenses
Receivables	$58.00M	$67.00M	$81.00M
Other Receivables	$77.00M	$154.0M	$42.00M
Total Short-Term Assets	$18.04B	$18.55B	$19.19B
YoY Change	18.87%	15.01%	20.89%
LONG-TERM ASSETS
Property, Plant & Equipment	$14.84B	$15.06B	$15.24B
YoY Change	-6.25%	-6.23%	-6.19%
Goodwill	$970.0M	$970.0M	$970.0M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$295.0M	$295.0M	$295.0M
YoY Change	0.0%	0.0%	0.0%
Long-Term Investments
YoY Change
Other Assets	$882.0M	$919.0M	$837.0M
YoY Change	22.16%	35.35%	26.44%
Total Long-Term Assets	$18.28B	$18.56B	$19.02B
YoY Change	-5.83%	-4.7%	-3.58%
TOTAL ASSETS
Total Short-Term Assets	$18.04B	$18.55B	$19.19B
Total Long-Term Assets	$18.28B	$18.56B	$19.02B
Total Assets	$36.32B	$37.11B	$38.21B
YoY Change	5.01%	4.23%	7.33%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.282B	$1.229B	$1.378B
YoY Change	37.7%	25.41%	42.06%
Accrued Expenses	$1.624B	$1.687B	$2.353B
YoY Change	-28.11%	-8.12%	-0.8%
Deferred Revenue	$5.566B	$5.751B	$6.312B
YoY Change	46.86%	45.52%	26.54%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$453.0M	$225.0M	$2.166B
YoY Change	105.91%	-68.75%	211.65%
Total Short-Term Liabilities	$9.164B	$9.135B	$12.48B
YoY Change	22.09%	17.06%	33.28%
LONG-TERM LIABILITIES
Long-Term Debt	$10.27B	$11.01B	$9.188B
YoY Change	1.61%	8.66%	3.18%
Other Long-Term Liabilities	$1.224B	$1.098B	$1.120B
YoY Change	-1.84%	-10.95%	55.12%
Total Long-Term Liabilities	$1.224B	$1.098B	$1.120B
YoY Change	-1.84%	-10.95%	55.12%
TOTAL LIABILITIES
Total Short-Term Liabilities	$9.164B	$9.135B	$12.48B
Total Long-Term Liabilities	$1.224B	$1.098B	$1.120B
Total Liabilities	$10.39B	$10.23B	$13.60B
YoY Change	18.68%	13.23%	34.84%
SHAREHOLDERS EQUITY
Retained Earnings	$15.77B	$15.71B	$15.26B
YoY Change	6.75%	0.13%	-9.39%
Common Stock	$5.112B	$5.139B	$5.157B
YoY Change	0.65%	1.5%	2.18%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$10.86B	$10.86B	$10.87B
YoY Change	-0.14%	-0.14%	-0.15%
Treasury Stock Shares	296.0M shares
Shareholders Equity	$10.41B	$10.25B	$9.688B
YoY Change
Total Liabilities & Shareholders Equity	$36.32B	$37.11B	$38.21B
YoY Change	5.01%	4.23%	7.33%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021 Q2
OPERATING ACTIVITIES
Net Income	$68.00M	$446.0M	$348.0M
YoY Change	-107.49%	-138.55%	-138.03%
Depreciation, Depletion And Amortization	$323.0M	$322.0M	$315.0M
YoY Change	2.54%	1.9%	0.64%
Cash From Operating Activities	$247.0M	-$575.0M	$2.005B
YoY Change	-141.44%	-45.24%	123.52%
INVESTING ACTIVITIES
Capital Expenditures	-$183.0M	-$138.0M	-$95.00M
YoY Change	103.33%	55.06%	-15.18%
Acquisitions
YoY Change
Other Investing Activities	$0.00	-$273.0M	-$374.0M
YoY Change	-100.0%	-20.87%	-184.23%
Cash From Investing Activities	-$183.0M	-$412.0M	-$469.0M
YoY Change	-301.1%	-5.07%	-241.27%
FINANCING ACTIVITIES
Cash Dividend Paid		$0.00	$0.00
YoY Change
Common Stock Issuance & Retirement, Net		$0.00	$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-564.0M	-$157.0M	$617.0M
YoY Change	4.25%	-112.64%	-91.41%
NET CHANGE
Cash From Operating Activities	247.0M	-$575.0M	$2.005B
Cash From Investing Activities	-183.0M	-$412.0M	-$469.0M
Cash From Financing Activities	-564.0M	-$157.0M	$617.0M
Net Change In Cash	-500.0M	-$1.144B	$2.153B
YoY Change	-52.2%	372.73%	-74.4%
FREE CASH FLOW
Cash From Operating Activities	$247.0M	-$575.0M	$2.005B
Capital Expenditures	-$183.0M	-$138.0M	-$95.00M
Free Cash Flow	$430.0M	-$437.0M	$2.100B
YoY Change	-184.98%	-54.53%	108.13%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0000092380
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
CY2021Q1	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201601Member
	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201601Member
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-7259
	dei	Entity Registrant Name EntityRegistrantName	SOUTHWEST AIRLINES CO.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	TX
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	74-1563240
	dei	Entity Address Address Line1 EntityAddressAddressLine1	P.O. Box 36611
	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75235-1611
	dei	City Area Code CityAreaCode	214
	dei	Local Phone Number LocalPhoneNumber	792-4000
	dei	Security12b Title Security12bTitle	Common Stock ($1.00 par value)
	dei	Trading Symbol TradingSymbol	LUV
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	us-gaap	Interest Costs Incurred InterestCostsIncurred	343000000	USD
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	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.89
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.96
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.89
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	577000000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1129000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1300000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-2207000000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	592000000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	590000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	591000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	556000000	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	607000000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	590000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	610000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	556000000	shares
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	8876000000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	0	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14000000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	23000000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	180000000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	9093000000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	13000000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16000000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	22000000	USD
CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	544000000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	9688000000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	13000000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14000000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Subsequent Adjustments AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments	-42000000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	577000000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	10250000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	9832000000	USD
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	451000000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	-2000000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9000000	USD
CY2020Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.180
CY2020Q1	us-gaap	Dividends Cash DividendsCash	94000000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-219000000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	9075000000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2224000000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	13000000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	-2000000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	35000000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	392000000	USD
CY2020Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-859000000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	10878000000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	13000000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2000000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	5000000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1129000000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	9769000000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	446000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-1157000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	909000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-2166000000	USD
CY2021Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	322000000	USD
CY2020Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	315000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	949000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	940000000	USD
CY2021Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	2000000	USD
CY2020Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-17000000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	25000000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-25000000	USD
CY2021Q3	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-67000000	USD
CY2020Q3	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	298000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-42000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	528000000	USD
CY2021Q3	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	0	USD
CY2020Q3	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	0	USD
	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	0	USD
	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	222000000	USD
CY2021Q3	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-12000000	USD
CY2020Q3	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	USD
	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-12000000	USD
	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	USD
CY2021Q3	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	23000000	USD
CY2020Q3	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	123000000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	819000000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	60000000	USD
CY2021Q3	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-59000000	USD
CY2020Q3	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-84000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-64000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-366000000	USD
CY2021Q3	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-948000000	USD
CY2020Q3	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	26000000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-25000000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-65000000	USD
CY2021Q3	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-442000000	USD
CY2020Q3	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	216000000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	1103000000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	1584000000	USD
CY2021Q3	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-88000000	USD
CY2020Q3	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-106000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-275000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-312000000	USD
CY2021Q3	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	42000000	USD
CY2020Q3	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	-5000000	USD
	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	128000000	USD
	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	2000000	USD
CY2021Q3	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-20000000	USD
CY2020Q3	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-19000000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	12000000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-95000000	USD
CY2021Q3	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-575000000	USD
CY2020Q3	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1050000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2075000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-531000000	USD
CY2021Q3	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	135000000	USD
CY2020Q3	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	89000000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	325000000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	425000000	USD
CY2021Q3	luv	Supplier Proceeds SupplierProceeds	0	USD
CY2020Q3	luv	Supplier Proceeds SupplierProceeds	0	USD
	luv	Supplier Proceeds SupplierProceeds	0	USD
	luv	Supplier Proceeds SupplierProceeds	-428000000	USD
CY2021Q3	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	3000000	USD
CY2020Q3	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	0	USD
	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	3000000	USD
	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	0	USD
CY2021Q3	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2020Q3	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	815000000	USD
CY2021Q3	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	1525000000	USD
CY2020Q3	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	1536000000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	4500000000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	3881000000	USD
CY2021Q3	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	1251000000	USD
CY2020Q3	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	1191000000	USD
	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	3747000000	USD
	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	2956000000	USD
CY2021Q3	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-412000000	USD
CY2020Q3	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-434000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1081000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-107000000	USD
CY2021Q3	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020Q3	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2294000000	USD
	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	5622000000	USD
CY2021Q3	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	USD
CY2020Q3	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1125000000	USD
	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	USD
CY2021Q3	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2020Q3	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	3683000000	USD
CY2021Q3	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2020Q3	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1000000000	USD
CY2021Q3	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2020Q3	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	2300000000	USD
CY2021Q3	luv	Proceeds From Payroll Support Program Loans And Warrants ProceedsFromPayrollSupportProgramLoansAndWarrants	0	USD
CY2020Q3	luv	Proceeds From Payroll Support Program Loans And Warrants ProceedsFromPayrollSupportProgramLoansAndWarrants	130000000	USD
CY2020Q3	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	0	USD
	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	0	USD
	luv	Proceeds From Payroll Support Program Loans And Warrants ProceedsFromPayrollSupportProgramLoansAndWarrants	1136000000	USD
	luv	Proceeds From Payroll Support Program Loans And Warrants ProceedsFromPayrollSupportProgramLoansAndWarrants	1016000000	USD
CY2021Q3	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	13000000	USD
CY2020Q3	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	13000000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	39000000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	36000000	USD
CY2021Q3	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020Q3	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	451000000	USD
CY2021Q3	luv	Repayments Of Other Long Term Debt And Finance Lease Obligations RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	67000000	USD
CY2020Q3	luv	Repayments Of Other Long Term Debt And Finance Lease Obligations RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	59000000	USD
	luv	Repayments Of Other Long Term Debt And Finance Lease Obligations RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	177000000	USD
	luv	Repayments Of Other Long Term Debt And Finance Lease Obligations RepaymentsOfOtherLongTermDebtAndFinanceLeaseObligations	295000000	USD
CY2021Q3	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	0	USD
	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	3683000000	USD
CY2021Q3	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2020Q3	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1000000000	USD
CY2021Q3	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2020Q3	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	188000000	USD
CY2021Q3	luv	Payments Of Terminated Interest Rate Derivative Instruments PaymentsOfTerminatedInterestRateDerivativeInstruments	0	USD
CY2020Q3	luv	Payments Of Terminated Interest Rate Derivative Instruments PaymentsOfTerminatedInterestRateDerivativeInstruments	31000000	USD
	luv	Payments Of Terminated Interest Rate Derivative Instruments PaymentsOfTerminatedInterestRateDerivativeInstruments	0	USD
	luv	Payments Of Terminated Interest Rate Derivative Instruments PaymentsOfTerminatedInterestRateDerivativeInstruments	31000000	USD
CY2021Q3	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	121000000	USD
CY2020Q3	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	121000000	USD
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2021Q3	luv	Capitalized Financing Items CapitalizedFinancingItems	0	USD
CY2020Q3	luv	Capitalized Financing Items CapitalizedFinancingItems	-44000000	USD
	luv	Capitalized Financing Items CapitalizedFinancingItems	0	USD
	luv	Capitalized Financing Items CapitalizedFinancingItems	133000000	USD
CY2021Q3	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	18000000	USD
CY2020Q3	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	20000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	46000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	29000000	USD
CY2021Q3	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-157000000	USD
CY2020Q3	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1242000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	923000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	10199000000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1144000000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-242000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1917000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	9561000000	USD
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	14124000000	USD
CY2020Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12351000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	11063000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2548000000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12980000000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12109000000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12980000000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12109000000	USD
CY2021Q3	us-gaap	Interest Paid Net InterestPaidNet	22000000	USD
CY2020Q3	us-gaap	Interest Paid Net InterestPaidNet	7000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	188000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	61000000	USD
CY2021Q3	us-gaap	Income Taxes Paid IncomeTaxesPaid	114000000	USD
CY2020Q3	us-gaap	Income Taxes Paid IncomeTaxesPaid	7000000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	291000000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	17000000	USD
CY2021Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	53000000	USD
CY2020Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6000000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	283000000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	692000000	USD
CY2021Q3	luv	Flight Equipment Acquired Against Supplier Credit FlightEquipmentAcquiredAgainstSupplierCredit	0	USD
CY2020Q3	luv	Flight Equipment Acquired Against Supplier Credit FlightEquipmentAcquiredAgainstSupplierCredit	0	USD
	luv	Flight Equipment Acquired Against Supplier Credit FlightEquipmentAcquiredAgainstSupplierCredit	512000000	USD
	luv	Flight Equipment Acquired Against Supplier Credit FlightEquipmentAcquiredAgainstSupplierCredit	0	USD
CY2021Q3	luv	Assets Constructed For Others During Period AssetsConstructedForOthersDuringPeriod	0	USD
CY2020Q3	luv	Assets Constructed For Others During Period AssetsConstructedForOthersDuringPeriod	35000000	USD
	luv	Assets Constructed For Others During Period AssetsConstructedForOthersDuringPeriod	309000000	USD
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CY2021Q3	luv	Remeasurement Of Right Of Use Asset And Lease Liability RemeasurementOfRightOfUseAssetAndLeaseLiability	343000000	USD
CY2020Q3	luv	Remeasurement Of Right Of Use Asset And Lease Liability RemeasurementOfRightOfUseAssetAndLeaseLiability	0	USD
	luv	Remeasurement Of Right Of Use Asset And Lease Liability RemeasurementOfRightOfUseAssetAndLeaseLiability	343000000	USD
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	us-gaap	Basis Of Accounting BasisOfAccounting	BASIS OF PRESENTATION<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%">Southwest Airlines Co. (the "Company" or "Southwest") operates Southwest Airlines, a major passenger airline that provides scheduled air transportation in the United States and near-international markets. The unaudited Condensed Consolidated Financial Statements include accounts of the Company and its wholly owned subsidiaries.</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 accompanying unaudited Condensed Consolidated Financial Statements of the Company and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles in the United States ("GAAP") for complete financial statements. The unaudited Condensed Consolidated Financial Statements for the interim periods ended September 30, 2021 and 2020 include all adjustments which are, in the opinion of management, necessary for a fair presentation of the results for the interim periods. This includes all normal and recurring adjustments and elimination of significant intercompany transactions. Financial results for the Company and airlines in general can be seasonal in nature. In many years, the Company's revenues, as well as its Operating income and Net income, have been better in its second and third fiscal quarters than in its first and fourth fiscal quarters. However, beginning in early 2020, as a result of the COVID-19 pandemic, the Company's results have not always been in line with such historical trends. See Note 2 for further information. Air travel is also significantly impacted by general economic conditions, the amount of disposable income available to consumers and changes in consumer behavior, unemployment levels, corporate travel budgets, global pandemics such as COVID-19, extreme or severe weather and natural disasters, fears of terrorism or war, governmental actions, and other factors beyond the Company's control. These and other factors, such as the price of jet fuel in some periods, the nature of the Company's fuel hedging program, and the periodic volatility of commodities used by the Company for hedging jet fuel, have created, and may continue to create, significant volatility in the Company's financial results. See Note 4 for further information on fuel and the Company's hedging program. Operating results for the three and nine months ended September 30, 2021, are not necessarily indicative of the results that may be expected for future quarters or for the year ended December 31, 2021. For further information, refer to the Consolidated Financial Statements and footnotes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020. </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%">In the unaudited Condensed Consolidated Statement of Comprehensive Income (Loss), for the nine months ended September 30, 2021, Payroll support and voluntary Employee programs, net, includes the correction of previously under accrued payroll tax credits, related to fourth quarter 2020, of $88 million, pre-tax. Other gains and losses, net, includes gains of $60 million, pre-tax, to correct investment gains related to prior periods previously recorded in Accumulated other comprehensive income (loss) ("AOCI"). </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%">In the unaudited Condensed Consolidated Statement of Stockholders' Equity, for the nine months ended September 30, 2021, the Company recorded a decrease of $19 million, net of tax, in AOCI and a corresponding increase in Retained earnings to correct the amount of the impact of the cumulative effect of adopting Accounting Standards Update ("ASU") 2016-01, Financial Instruments in 2018.</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%">These corrections are not considered material to prior period financial statements and are not expected to be material to the full year 2021 financial statements.</span></div>
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	682000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	134000000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	2000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	6000000	USD
CY2021Q3	us-gaap	Price Risk Cash Flow Hedge Unrealized Gain Loss To Be Reclassified During Next12 Months PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months	173000000	USD
	luv	Interest Rate Swap Derivative Aircraft Leases Term InterestRateSwapDerivativeAircraftLeasesTerm	P9Y
CY2021Q3	luv	Discontinuationof Interest Rate Cash Flow Hedge Balancein Aoci DiscontinuationofInterestRateCashFlowHedgeBalanceinAOCI	59000000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P9Y
CY2021Q3	luv	Maximum Sum Of Derivatives Of Counterparty To Be Included In Other MaximumSumOfDerivativesOfCounterpartyToBeIncludedInOther	11000000	USD
CY2021Q3	luv	Letter Of Credit Percent Of Collateral LetterOfCreditPercentOfCollateral	1
CY2021Q3	luv	Cash Collateral Percent Of Fair Value Fuel Derivatives Contracts CashCollateralPercentOfFairValueFuelDerivativesContracts	1
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	446000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-1157000000	USD
CY2021Q3	luv	Other Comprehensive Income Other Tax OtherComprehensiveIncomeOtherTax	0	USD
CY2020Q3	luv	Other Comprehensive Income Other Tax OtherComprehensiveIncomeOtherTax	3000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	11000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	131000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	28000000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	577000000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1129000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	909000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-2166000000	USD
	luv	Other Comprehensive Income Other Tax OtherComprehensiveIncomeOtherTax	-13000000	USD
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	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	391000000	USD
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	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1300000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-2207000000	USD
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CY2021Q3	luv	Contract With Customer Liability Air Traffic Liability Service Revenue ContractWithCustomerLiabilityAirTrafficLiabilityServiceRevenue	3464000000	USD
CY2020Q4	luv	Contract With Customer Liability Air Traffic Liability Service Revenue ContractWithCustomerLiabilityAirTrafficLiabilityServiceRevenue	2686000000	USD
CY2021Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4772000000	USD
CY2020Q4	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4447000000	USD
CY2021Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	8236000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7133000000	USD
CY2021Q2	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4719000000	USD
CY2020Q2	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	3856000000	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
CY2021Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program Awarded Points ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgramAwardedPoints	688000000	USD
CY2020Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program Awarded Points ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgramAwardedPoints	447000000	USD
	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program Awarded Points ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgramAwardedPoints	1810000000	USD
	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program Awarded Points ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgramAwardedPoints	1488000000	USD
CY2021Q3	luv	Unused Funds Converted To Loyalty Points UnusedFundsConvertedToLoyaltyPoints	0	USD
CY2020Q3	luv	Unused Funds Converted To Loyalty Points UnusedFundsConvertedToLoyaltyPoints	105000000	USD
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CY2021Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4772000000	USD
CY2020Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4187000000	USD
CY2021Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4772000000	USD
CY2020Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram	4187000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7133000000	USD
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	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	2346000000	USD
	luv	Contract With Customer Liability Revenue Recognized Current Period ContractWithCustomerLiabilityRevenueRecognizedCurrentPeriod	7199000000	USD
CY2021Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	8236000000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	5510000000	USD
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	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	2126000000	USD
	luv	Contract With Customer Liability Revenue Recognized Current Period ContractWithCustomerLiabilityRevenueRecognizedCurrentPeriod	-3921000000	USD
CY2020Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7094000000	USD
CY2021Q3	luv	Residual Travel Funds ResidualTravelFunds	0.17
CY2020Q4	luv	Residual Travel Funds ResidualTravelFunds	0.28
CY2019Q4	luv	Residual Travel Funds ResidualTravelFunds	0.02
CY2021Q3	luv	Contract With Customer Liability Air Traffic Liability Loyalty Program Customer Funds Expiring ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgramCustomerFundsExpiring	1400000000	USD
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CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	446000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-1157000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	909000000	USD
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CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	590000000	shares
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CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
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CY2021Q3	luv	Extended Emergency Time Off Other Noncurrent Liability ExtendedEmergencyTimeOffOtherNoncurrentLiability	0	USD
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CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Remainder Of Fiscal Year OtherCommitmentNumberOfAircraftsToBePurchasedRemainderOfFiscalYear	28	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year One OtherCommitmentNumberOfAircraftsToBePurchasedYearOne	114	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Two OtherCommitmentNumberOfAircraftsToBePurchasedYearTwo	90	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Three OtherCommitmentNumberOfAircraftsToBePurchasedYearThree	86	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Four OtherCommitmentNumberOfAircraftsToBePurchasedYearFour	86	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Five OtherCommitmentNumberOfAircraftsToBePurchasedYearFive	70	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Six OtherCommitmentNumberOfAircraftsToBePurchasedYearSix	36	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Seven OtherCommitmentNumberOfAircraftsToBePurchasedYearSeven	30	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Eight OtherCommitmentNumberOfAircraftsToBePurchasedYearEight	50	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Nine OtherCommitmentNumberOfAircraftsToBePurchasedYearNine	60	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased Year Ten OtherCommitmentNumberOfAircraftsToBePurchasedYearTen	10	aircraft
CY2021Q3	luv	Other Commitment Number Of Aircrafts To Be Purchased OtherCommitmentNumberOfAircraftsToBePurchased	660	aircraft
CY2021Q3	us-gaap	Other Commitments Future Minimum Payments Remainder Of Fiscal Year OtherCommitmentsFutureMinimumPaymentsRemainderOfFiscalYear	33000000	USD

Files In Submission

Name	View Source	Status
0000092380-21-000160-index-headers.html	Edgar Link	pending
0000092380-21-000160-index.html	Edgar Link	pending
0000092380-21-000160.txt	Edgar Link	pending
0000092380-21-000160-xbrl.zip	Edgar Link	pending
exhibit101thirdamendmentto.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
luv-20210930.htm	Edgar Link	pending
luv-20210930.xsd	Edgar Link	pending
luv-20210930_cal.xml	Edgar Link	unprocessable
luv-20210930_def.xml	Edgar Link	unprocessable
luv-20210930_g1.jpg	Edgar Link	pending
luv-20210930_htm.xml	Edgar Link	completed
luv-20210930_lab.xml	Edgar Link	unprocessable
luv-20210930_pre.xml	Edgar Link	unprocessable
luv-9302021xex311.htm	Edgar Link	pending
luv-9302021xex312.htm	Edgar Link	pending
luv-9302021xex321.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$LUV
SOUTHWEST AIRLINES CO Stock $luv

2021 Q4 Form 10-Q Financial Statement

#000009238021000160 Filed on October 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LUV SOUTHWEST AIRLINES CO Stock $luv

2021 Q4 Form 10-Q Financial Statement

#000009238021000160 Filed on October 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LUV
SOUTHWEST AIRLINES CO Stock $luv