$LUV
SOUTHWEST AIRLINES CO Stock $luv

$luv Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000119312513041608 Filed on February 07, 2013

Income Statement

Concept	2012 Q4	2011 Q4	2011 Q3
Revenue	$4.173B	$4.108B	$4.311B
YoY Change	1.58%	31.92%	135056290.98%
Cost Of Revenue	$1.842B	$1.840B	$1.933B
YoY Change	0.11%	55.14%	63.95%
Gross Profit	$2.331B	$2.268B	$2.378B
YoY Change	2.78%	17.63%	18.13%
Gross Profit Margin	55.86%	55.21%	55.16%
Selling, General & Admin	$1.467B	$1.384B	$1.418B
YoY Change	6.0%	20.35%	25.04%
% of Gross Profit	62.93%	61.02%	59.63%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$224.0M	$192.0M	$191.0M
YoY Change	16.67%	20.75%	18.63%
% of Gross Profit	9.61%	8.47%	8.03%
Operating Expenses	$2.225B	$2.084B	$4.086B
YoY Change	6.77%	22.23%	144025278.92%
Operating Profit	$91.00M	$147.0M	$225.0M
YoY Change	-38.1%	-31.94%	-36.62%
Interest Expense	$34.00M	$109.0M	-$451.0M
YoY Change	-68.81%	-3733.33%	1860.87%
% of Operating Profit	37.36%	74.15%	-200.44%
Other Income/Expense, Net			-$451.0M
YoY Change			1960869465.22%
Pretax Income	$125.0M	$255.0M	-$226.0M
YoY Change	-50.98%	19.72%	-168.07%
Income Tax	$47.00M	$104.0M	-$86.00M
% Of Pretax Income	37.6%	40.78%
Net Earnings	$78.00M	$152.0M	-$140.0M
YoY Change	-48.68%	16.03%	-168.29%
Net Earnings / Revenue	1.87%	3.7%	-3.25%
Basic Earnings Per Share	$0.11	$0.20	-$0.18
Diluted Earnings Per Share	$0.11	$0.20	-$0.18
COMMON SHARES
Basic Shares Outstanding	728.1M shares	772.9M shares	792.0M shares
Diluted Shares Outstanding			792.0M shares

Balance Sheet

Concept	2012 Q4	2011 Q4	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.970B	$3.144B	$3.656B
YoY Change	-5.53%	-11.14%	8.2%
Cash & Equivalents	$1.113B	$829.0M	$1.016B
Short-Term Investments	$1.857B	$2.315B	$2.640B
Other Short-Term Assets	$456.0M	$501.0M	$110.0M
YoY Change	-8.98%	65.35%	-23.08%
Inventory	$469.0M	$401.0M	$459.0M
Prepaid Expenses
Receivables	$332.0M	$299.0M	$369.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.227B	$4.345B	$4.594K
YoY Change	-2.72%	1.54%	-100.0%
LONG-TERM ASSETS
Property, Plant & Equipment	$12.77B	$12.13B	$11.83K
YoY Change	5.27%	14.64%	-100.0%
Goodwill	$970.0M	$970.0M	$970.00
YoY Change	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$633.0M	$626.0M	$487.00
YoY Change	1.12%	3.3%	-100.0%
Total Long-Term Assets	$14.37B	$13.72B	$13.29K
YoY Change	4.71%	22.7%	-100.0%
TOTAL ASSETS
Total Short-Term Assets	$4.227B	$4.345B	$4.594K
Total Long-Term Assets	$14.37B	$13.72B	$13.29K
Total Assets	$18.60B	$18.07B	$17.89K
YoY Change	2.92%	16.85%	-100.0%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.107B	$1.057B	$1.083K
YoY Change	4.73%	43.03%	-100.0%
Accrued Expenses	$1.102B	$996.0M	$1.193K
YoY Change	10.64%	15.41%	-100.0%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$271.0M	$644.0M	$986.00
YoY Change	-57.92%	27.52%	-100.0%
Total Short-Term Liabilities	$4.650B	$4.533B	$5.320K
YoY Change	2.58%	37.16%	-100.0%
LONG-TERM LIABILITIES
Long-Term Debt	$2.883B	$3.107B	$3.220K
YoY Change	-7.21%	8.07%	-100.0%
Other Long-Term Liabilities	$856.0M	$910.0M	$926.00
YoY Change	-5.93%	95.7%	-100.0%
Total Long-Term Liabilities	$3.739B	$4.017B	$4.146K
YoY Change	-6.92%	20.27%	-100.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.650B	$4.533B	$5.320K
Total Long-Term Liabilities	$3.739B	$4.017B	$4.146K
Total Liabilities	$8.389B	$8.550B	$9.466K
YoY Change	-1.88%	28.67%	-100.0%
SHAREHOLDERS EQUITY
Retained Earnings	$5.768B	$5.395B	$5.251K
YoY Change	6.91%	-0.07%
Common Stock	$2.018B	$2.030B	$2.030K
YoY Change	-0.59%	1.96%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$675.0M	$324.0M	$283.00
YoY Change	108.33%	-63.64%
Treasury Stock Shares	77.29M shares	35.05M shares
Shareholders Equity	$6.992B	$6.877B	$6.485K
YoY Change
Total Liabilities & Shareholders Equity	$18.60B	$18.07B	$17.89K
YoY Change	2.92%	16.85%	-100.0%

Cashflow Statement

Concept	2012 Q4	2011 Q4	2011 Q3
OPERATING ACTIVITIES
Net Income	$78.00M	$152.0M	-$140.0M
YoY Change	-48.68%	16.03%	-168.29%
Depreciation, Depletion And Amortization	$224.0M	$192.0M	$191.0M
YoY Change	16.67%	20.75%	18.63%
Cash From Operating Activities	$231.0M	$371.0M	-$218.0M
YoY Change	-37.74%	37.92%	-56623476.62%
INVESTING ACTIVITIES
Capital Expenditures	-$399.0M	-$420.0M	$276.0M
YoY Change	-5.0%	342.11%	275999900.0%
Acquisitions			$0.00
YoY Change
Other Investing Activities	$210.0M	$355.0M	$0.00
YoY Change	-40.85%	373.33%
Cash From Investing Activities	-$189.0M	-$65.00M	-$137.0M
YoY Change	190.77%	225.0%	43910156.41%
FINANCING ACTIVITIES
Cash Dividend Paid			$3.00
YoY Change			0.0%
Common Stock Issuance & Retirement, Net			$175.0M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-97.00M	-493.0M	-$224.0M
YoY Change	-80.32%	2494.74%	722580545.16%
NET CHANGE
Cash From Operating Activities	231.0M	371.0M	-$218.0M
Cash From Investing Activities	-189.0M	-65.00M	-$137.0M
Cash From Financing Activities	-97.00M	-493.0M	-$224.0M
Net Change In Cash	-55.00M	-187.0M	-$579.0M
YoY Change	-70.59%	-181.3%	-1378571528.57%
FREE CASH FLOW
Cash From Operating Activities	$231.0M	$371.0M	-$218.0M
Capital Expenditures	-$399.0M	-$420.0M	$276.0M
Free Cash Flow	$630.0M	$791.0M	-$494.0M
YoY Change	-20.35%	117.31%	-173333433.33%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1124000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	12766000000	USD
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012Q4	dei	Entity Public Float EntityPublicFloat	6841926245	USD
CY2012Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	728096579	shares
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18596000000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5768000000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	210000000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2883000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2884000000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	271000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1113000000	USD
CY2012Q4	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	416000000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	4227000000	USD
CY2012Q4	us-gaap	Short Term Investments ShortTermInvestments	1857000000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1210000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	246000000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1107000000	USD
CY2012Q4	us-gaap	Deferred Air Traffic Revenue DeferredAirTrafficRevenue	2170000000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	970000000	USD
CY2012Q4	us-gaap	Assets Assets	18596000000	USD
CY2012Q4	us-gaap	Flight Equipment Gross FlightEquipmentGross	16367000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	6731000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	19497000000	USD
CY2012Q4	us-gaap	Airline Related Inventory AirlineRelatedInventory	469000000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	633000000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	808000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	2714000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	6992000000	USD
CY2011Q4	us-gaap	Flight Equipment Gross FlightEquipmentGross	15542000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2566000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	18421000000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5395000000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	324000000	USD
CY2012	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	160000000	USD
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	.0345
CY2012	us-gaap	Aircraft Rental AircraftRental	355000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1222000000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	264000000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	910000000	USD
CY2012	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	1132000000	USD
CY2011Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	238000000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.56
CY2011Q4	us-gaap	Deferred Air Traffic Revenue DeferredAirTrafficRevenue	1836000000	USD
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.56
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1057000000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	7000000	USD
CY2012	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	835000000	USD
CY2012	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4749000000	USD
CY2011	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	765000000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	808000000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	6877000000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	-12000000	USD
CY2011	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	955000000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	970000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	6294000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18068000000	USD
CY2011Q4	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	456000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	2423000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	12127000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	145000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	263000000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	644000000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	626000000	USD
CY2011Q4	us-gaap	Short Term Investments ShortTermInvestments	2315000000	USD
CY2011Q4	us-gaap	Assets Assets	18068000000	USD
CY2011	us-gaap	Passenger Revenue PassengerRevenue	14754000000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	12000000	USD
CY2011	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	959000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Property Plant And Equipment BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment	1154000000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	62000000	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	-21000000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	844000000	USD
CY2012	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	1043000000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	181000000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	623000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	685000000	USD
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	147000000	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2039000000	USD
CY2012	us-gaap	Passenger Revenue PassengerRevenue	16093000000	USD
CY2011Q4	us-gaap	Airline Related Inventory AirlineRelatedInventory	401000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	829000000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	4345000000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1102000000	USD
CY2011Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	996000000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4650000000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4533000000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3107000000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	675000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-119000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-224000000	USD
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	807611634	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	807611634	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	35050991	shares
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	77292145	shares
CY2012Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	332000000	USD
CY2011Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	299000000	USD
CY2011Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	75000000	USD
CY2012Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	63000000	USD
CY2012	us-gaap	Fuel Costs FuelCosts	6120000000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	693000000	USD
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	.0180
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	323000000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	10000000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-370000000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-198000000	USD
CY2011	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	139000000	USD
CY2011	us-gaap	Interest Expense Debt InterestExpenseDebt	194000000	USD
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.23
CY2011	us-gaap	Fuel Costs FuelCosts	5644000000	USD
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4371000000	USD
CY2011	us-gaap	Aircraft Rental AircraftRental	308000000	USD
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.23
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1879000000	USD
CY2012	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	183000000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	16465000000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	14965000000	USD
CY2010	us-gaap	Passenger Revenue PassengerRevenue	11489000000	USD
CY2010	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	125000000	USD
CY2010	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	490000000	USD
CY2010	us-gaap	Labor And Related Expense LaborAndRelatedExpense	3704000000	USD
CY2010	us-gaap	Fuel Costs FuelCosts	3620000000	USD
CY2010	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	751000000	USD
CY2010	us-gaap	Aircraft Rental AircraftRental	180000000	USD
CY2010	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	807000000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	628000000	USD
CY2010	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	8000000	USD
CY2010	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1418000000	USD
CY2010	us-gaap	Operating Expenses OperatingExpenses	11116000000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	988000000	USD
CY2010	us-gaap	Interest Expense Debt InterestExpenseDebt	167000000	USD
CY2010	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	-18000000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	12000000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-106000000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-243000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	745000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	286000000	USD
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.62
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.61
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	.0180
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	715000000	USD
CY2011	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	134000000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	421000000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	178000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	459000000	USD
CY2012	us-gaap	Revenues Revenues	17088000000	USD
CY2010	us-gaap	Revenues Revenues	12104000000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	3000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-14000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	105000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	38000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	316000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	775000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	216000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	526000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-8000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1000000	USD
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	5454000000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	6237000000	USD
CY2010	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	54000000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-45000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1022000000	USD
CY2010	us-gaap	Dividends Cash DividendsCash	13000000	USD
CY2011	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	5362000000	USD
CY2010	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	26000000	USD
CY2010	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	8000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	193000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Amount BusinessAcquisitionPurchasePriceAllocationGoodwillAmount	970000000	USD
CY2011	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	20000000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-5000000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	13000000	USD
CY2011	us-gaap	Dividends Cash DividendsCash	14000000	USD
CY2012	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	23000000	USD
CY2012	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	400000000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-24000000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	16000000	USD
CY2012	us-gaap	Dividends Cash DividendsCash	26000000	USD
CY2011	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	225000000	USD
CY2011	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	112000000	USD
CY2011	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	523000000	USD
CY2012	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.345
CY2011	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.018
CY2010	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.018
CY2012	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	33000000	USD
CY2011	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	26000000	USD
CY2012	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	104000000	USD
CY2011	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	196000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	186000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	253000000	USD
CY2012	us-gaap	Increase Decrease In Air Traffic Liability1 IncreaseDecreaseInAirTrafficLiability1	334000000	USD
CY2011	us-gaap	Increase Decrease In Air Traffic Liability1 IncreaseDecreaseInAirTrafficLiability1	262000000	USD
CY2012	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	233000000	USD
CY2011	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	-195000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-133000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-165000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2064000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1356000000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1348000000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	968000000	USD
CY2012	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	2996000000	USD
CY2011	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	5343000000	USD
CY2012	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	27000000	USD
CY2011	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	20000000	USD
CY2012	luv	Proceeds From Termination Of Interest Rate Derivatives ProceedsFromTerminationOfInterestRateDerivatives	38000000	USD
CY2011	luv	Proceeds From Termination Of Interest Rate Derivatives ProceedsFromTerminationOfInterestRateDerivatives	76000000	USD
CY2011	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	540000000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	400000000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	225000000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2000000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-12000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-947000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-766000000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	284000000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-432000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1261000000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	35000000	USD
CY2012	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2011	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	81000000	USD
CY2012	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	578000000	USD
CY2012	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	0	USD
CY2012	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2481000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-833000000	USD
CY2011Q2	us-gaap	Business Acquisition Cost Of Acquired Entity Cash Paid BusinessAcquisitionCostOfAcquiredEntityCashPaid	518000000	USD
CY2010	us-gaap	Increase Decrease In Air Traffic Liability1 IncreaseDecreaseInAirTrafficLiability1	153000000	USD
CY2010	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	265000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	361000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1561000000	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	493000000	USD
CY2010	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	5624000000	USD
CY2010	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	4852000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1265000000	USD
CY2010	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	55000000	USD
CY2010	luv	Proceeds From Termination Of Interest Rate Derivatives ProceedsFromTerminationOfInterestRateDerivatives	0	USD
CY2010	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	155000000	USD
CY2010	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	44000000	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	8000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-149000000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	147000000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1114000000	USD
CY2011	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	0	USD
CY2012	us-gaap	Sale Leaseback Transaction Current Period Gain Recognized SaleLeasebackTransactionCurrentPeriodGainRecognized	12000000	USD
CY2011	us-gaap	Sale Leaseback Transaction Current Period Gain Recognized SaleLeasebackTransactionCurrentPeriodGainRecognized	13000000	USD
CY2010	us-gaap	Sale Leaseback Transaction Current Period Gain Recognized SaleLeasebackTransactionCurrentPeriodGainRecognized	14000000	USD
CY2010	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2010	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-139000000	USD
CY2011	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-90000000	USD
CY2012	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	189000000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	13000000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14000000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	22000000	USD
CY2012	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	251000000	USD
CY2011	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	123000000	USD
CY2010	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	133000000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	153000000	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	100000000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	13000000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	185000000	USD
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	274000000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	135000000	USD
CY2012	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	0	USD
CY2012	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2010	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	0	USD
CY2010	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2011	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	523000000	USD
CY2011	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	78000000	USD
CY2012Q4	us-gaap	Derivative Asset Fair Value Net DerivativeAssetFairValueNet	306000000	USD
CY2012	us-gaap	Basis Of Accounting BasisOfAccounting	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;font-weight:bold;margin-left:0px;">Basis of Presentation </font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;margin-left:0px;">Southwes</font><font style="font-family:Times New Roman;font-size:11pt;">t Airlines Co. (the “Company”)</font><font style="font-family:Times New Roman;font-size:11pt;"> </font><font style="font-family:Times New Roman;font-size:11pt;">operates Southwest Airlines, </font><font style="font-family:Times New Roman;font-size:11pt;">a major domestic</font><font style="font-family:Times New Roman;font-size:11pt;"> airline</font><font style="font-family:Times New Roman;font-size:11pt;">. The Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries</font><font style="font-family:Times New Roman;font-size:11pt;">, which include AirTran Holdings, LLC. </font><font style="font-family:Times New Roman;font-size:11pt;">On May 2, 2011 (the “acquisition date”), the Company acquired all of the outstanding equity of AirTran Holdings, Inc. (“AirTran Holdings”), the former parent company of AirTran Airways, Inc. (“AirTran Airways”). Throughout </font><font style="font-family:Times New Roman;font-size:11pt;">th</font><font style="font-family:Times New Roman;font-size:11pt;">ese Notes</font><font style="font-family:Times New Roman;font-size:11pt;">, the Company makes reference to AirTran, which is meant to be inclusive of the following: (</font><font style="font-family:Times New Roman;font-size:11pt;">i</font><font style="font-family:Times New Roman;font-size:11pt;">) for periods prior to the acquisition date, AirTran Holdings and its subsidiaries, including, among others, AirTran Airways; and (ii) for periods on and after the acquisition date, AirTran Holdings, LLC, the successor to AirTran Holdings, and its subsidiaries, including among others, AirTran Airways. The accompanying Consolidated Financial Statements include the results of operations and cash flows for AirTran </font><font style="font-family:Times New Roman;font-size:11pt;">since</font><font style="font-family:Times New Roman;font-size:11pt;"> May 2, 2011. </font><font style="font-family:Times New Roman;font-size:11pt;">See Note </font><font style="font-family:Times New Roman;font-size:11pt;">2</font><font style="font-family:Times New Roman;font-size:11pt;">. All significant inter-entity balances and transactions have been eliminated. The preparation of financial statements in conformity with generally accepted accounting principles in the United States (GAAP) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;margin-left:0px;">Certain prior period amounts have been reclassified to conform to the current presentation. In the Consolidated Statement of Income for the </font><font style="font-family:Times New Roman;font-size:11pt;">year ended</font><font style="font-family:Times New Roman;font-size:11pt;"> </font><font style="font-family:Times New Roman;font-size:11pt;">December 31</font><font style="font-family:Times New Roman;font-size:11pt;">, 2011, the Company has reclassified </font><font style="font-family:Times New Roman;font-size:11pt;">$19</font><font style="font-family:Times New Roman;font-size:11pt;"> million</font><font style="font-family:Times New Roman;font-size:11pt;"> from </font><font style="font-family:Times New Roman;font-size:11pt;">Other</font><font style="font-family:Times New Roman;font-size:11pt;"> revenues to Passenger revenues associated with its sale of frequent flyer </font><font style="font-family:Times New Roman;font-size:11pt;">points directly to Customers and the redemption of those points for flights</font><font style="font-family:Times New Roman;font-size:11pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;margin-left:0px;">P</font><font style="font-family:Times New Roman;font-size:11pt;">roceeds from the sale of Auction Rate Securities </font><font style="font-family:Times New Roman;font-size:11pt;">of $29 million </font><font style="font-family:Times New Roman;font-size:11pt;">have been reclassified from Operating Activities to Investing Activities, to </font><font style="font-family:Times New Roman;font-size:11pt;">correct</font><font style="font-family:Times New Roman;font-size:11pt;"> the Consolidated Statement of Cash Flows</font><font style="font-family:Times New Roman;font-size:11pt;"> for 2011</font><font style="font-family:Times New Roman;font-size:11pt;">.</font></p>
CY2012	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;margin-left:0px;">Certain prior period amounts have been reclassified to conform to the current presentation. In the Consolidated Statement of Income for the </font><font style="font-family:Times New Roman;font-size:11pt;">year ended</font><font style="font-family:Times New Roman;font-size:11pt;"> </font><font style="font-family:Times New Roman;font-size:11pt;">December 31</font><font style="font-family:Times New Roman;font-size:11pt;">, 2011, the Company has reclassified </font><font style="font-family:Times New Roman;font-size:11pt;">$19</font><font style="font-family:Times New Roman;font-size:11pt;"> million</font><font style="font-family:Times New Roman;font-size:11pt;"> from </font><font style="font-family:Times New Roman;font-size:11pt;">Other</font><font style="font-family:Times New Roman;font-size:11pt;"> revenues to Passenger revenues associated with its sale of frequent flyer </font><font style="font-family:Times New Roman;font-size:11pt;">points directly to Customers and the redemption of those points for flights</font><font style="font-family:Times New Roman;font-size:11pt;">.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;margin-left:0px;">P</font><font style="font-family:Times New Roman;font-size:11pt;">roceeds from the sale of Auction Rate Securities </font><font style="font-family:Times New Roman;font-size:11pt;">of $29 million </font><font style="font-family:Times New Roman;font-size:11pt;">have been reclassified from Operating Activities to Investing Activities, to </font><font style="font-family:Times New Roman;font-size:11pt;">correct</font><font style="font-family:Times New Roman;font-size:11pt;"> the Consolidated Statement of Cash Flows</font><font style="font-family:Times New Roman;font-size:11pt;"> for 2011</font><font style="font-family:Times New Roman;font-size:11pt;">.</font></p>
CY2012	us-gaap	New Date Of Annual Goodwill Impairment Test NewDateOfAnnualGoodwillImpairmentTest	October 1, 2012
CY2012	us-gaap	Advertising Expense AdvertisingExpense	223000000	USD
CY2011	us-gaap	Advertising Expense AdvertisingExpense	237000000	USD
CY2010	us-gaap	Advertising Expense AdvertisingExpense	202000000	USD
CY2012Q4	us-gaap	Acquired Finite Lived Intangible Asset Amount AcquiredFiniteLivedIntangibleAssetAmount	213000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	75000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	19000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	15000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	14000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	11000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	8000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	71000000	USD
CY2012Q4	luv	Percentage Excess Of Fair Value Over Carrying Value For Goodwill And Finite Lived Intangible Assets PercentageExcessOfFairValueOverCarryingValueForGoodwillAndFiniteLivedIntangibleAssets	0.2	pure
CY2012	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P14Y0M0D
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	25000000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	50000000	USD
CY2012	luv	Funds Related To Free Travel Percentage Sw FundsRelatedToFreeTravelPercentageSW	1	pure
CY2012	luv	Funds Related To Free Travel Percentage Air Tran FundsRelatedToFreeTravelPercentageAirTran	1	pure
CY2012Q4	luv	Frequent Flyer Points And Flight Credits Liability FrequentFlyerPointsAndFlightCreditsLiability	814000000	USD
CY2012Q4	luv	Unionized Employees Concentration Risk Percentage UnionizedEmployeesConcentrationRiskPercentage	0.83	pure
CY2012Q4	luv	Percentage Of Employees Subject To Amendable Agreements In Current Year PercentageOfEmployeesSubjectToAmendableAgreementsInCurrentYear	0.56	pure
CY2012Q4	luv	Percentage Of Employees Subject To Amendable Agreements In Following Year PercentageOfEmployeesSubjectToAmendableAgreementsInFollowingYear	0.25	pure
CY2011Q2	us-gaap	Business Acquisition Name Of Acquired Entity BusinessAcquisitionNameOfAcquiredEntity	AirTran Holdings, Inc.
CY2011Q2	us-gaap	Business Acquisition Date Of Acquisition Agreement1 BusinessAcquisitionDateOfAcquisitionAgreement1	2011-05-02
CY2011Q2	luv	Cash Consideration Paid Per Share Of Acquirees Stock2 CashConsiderationPaidPerShareOfAcquireesStock2	3.75
CY2011Q2	luv	Stock Consideration Paid Per Share Of Acquirees Stock StockConsiderationPaidPerShareOfAcquireesStock	0.321	shares
CY2011Q2	luv	Business Acquisition Average Acquirer Stock Price Used To Determine Value BusinessAcquisitionAverageAcquirerStockPriceUsedToDetermineValue	11.90
CY2011Q2	luv	Business Acquisition Acquiree Common Stock Value Assigned Per Share BusinessAcquisitionAcquireeCommonStockValueAssignedPerShare	7.57
CY2011Q2	luv	Business Acquisition Acquiree Common Stock Value Assigned Total BusinessAcquisitionAcquireeCommonStockValueAssignedTotal	1000000000	USD
CY2011Q2	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	44000000	shares
CY2011Q2	luv	Business Acquisition Number Of Shares Issued As Percentage Of Acquirer Common Shares Outstanding BusinessAcquisitionNumberOfSharesIssuedAsPercentageOfAcquirerCommonSharesOutstanding	0.056	pure
CY2011Q2	luv	Cash Paid To Redeem Share Based Performance Awards CashPaidToRedeemShareBasedPerformanceAwards	7000000	USD
CY2011Q2	us-gaap	Business Acquisition Cost Of Acquired Entity Purchase Price BusinessAcquisitionCostOfAcquiredEntityPurchasePrice	3200000000	USD
CY2011Q2	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	81000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Cash And Cash Equivalents BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalents	477000000	USD
CY2011Q2	luv	Business Acquisition Purchase Price Allocation Current Assets Restricted Cash BusinessAcquisitionPurchasePriceAllocationCurrentAssetsRestrictedCash	6000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Prepaid Expense And Other Assets BusinessAcquisitionPurchasePriceAllocationCurrentAssetsPrepaidExpenseAndOtherAssets	234000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Amortizable Intangible Assets BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets	123000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Deferred Income Taxes Asset Liability Net BusinessAcquisitionPurchasePriceAllocationDeferredIncomeTaxesAssetLiabilityNet	162000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Other Noncurrent Assets BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssets	45000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Noncurrent Liabilities Long Term Debt BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesLongTermDebt	1119000000	USD
CY2011Q2	luv	Business Acquisition Purchase Price Allocation Noncurrent Liabilities Air Traffic Liability BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesAirTrafficLiability	354000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Other Noncurrent Liabilities BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentLiabilities	657000000	USD
CY2011Q2	us-gaap	Business Acquisition Purchase Price Allocation Assets Acquired Liabilities Assumed Net BusinessAcquisitionPurchasePriceAllocationAssetsAcquiredLiabilitiesAssumedNet	1041000000	USD
CY2011Q2	us-gaap	Debt Conversion Converted Instrument Shares Issued1 DebtConversionConvertedInstrumentSharesIssued1	7000000	shares
CY2011	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	16601000000	USD
CY2010	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	14721000000	USD
CY2011	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	160000000	USD
CY2011	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	.21
CY2011	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	.21
CY2010	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	.63
CY2010	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	.63
CY2010	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	499000000	USD
CY2012Q4	luv	Long Term Purchase Commitment Minimum Quantity Required For737 Ng700 Aircraft LongTermPurchaseCommitmentMinimumQuantityRequiredFor737NG700Aircraft	127	Aircrafts
CY2012Q4	luv	Long Term Purchase Commitment Minimum Quantity Required For737 Ng800 Aircraft LongTermPurchaseCommitmentMinimumQuantityRequiredFor737NG800Aircraft	44	Aircrafts
CY2012Q4	luv	Long Term Purchase Commitments Options737 Ng LongTermPurchaseCommitmentsOptions737NG	92	Aircrafts
CY2012Q4	luv	Long Term Purchase Commitments Total LongTermPurchaseCommitmentsTotal	563	Aircrafts
CY2012Q4	luv	Total Recorded Lfmp Construction Costs TotalRecordedLfmpConstructionCosts	331000000	USD
CY2012Q4	luv	Long Term Purchase Commitment Minimum Quantity Required For737 Mx Aircraft LongTermPurchaseCommitmentMinimumQuantityRequiredFor737MxAircraft	150	Aircrafts
CY2012Q4	luv	Long Term Purchase Commitments Options737 Mx LongTermPurchaseCommitmentsOptions737Mx	150	Aircrafts
CY2012	luv	Expected Total Cost Of Airport Project ExpectedTotalCostOfAirportProject	519000000	USD
CY2010Q4	luv	Municipal Bonds Issued MunicipalBondsIssued	310000000	USD
CY2012Q2	luv	Municipal Bonds Issued MunicipalBondsIssued	146000000	USD
CY2011Q4	us-gaap	Derivative Asset Fair Value Net DerivativeAssetFairValueNet	253000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	155000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Noncurrent AvailableForSaleSecuritiesNoncurrent	97000000	USD
CY2011Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	121000000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	626000000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	633000000	USD
CY2012Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	148000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	138000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Noncurrent AvailableForSaleSecuritiesNoncurrent	41000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	598000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	497000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	474000000	USD
CY2012Q4	us-gaap	Deferred Compensation Cash Based Arrangements Liability Current DeferredCompensationCashBasedArrangementsLiabilityCurrent	135000000	USD
CY2012Q4	us-gaap	Accrued Rent Current AccruedRentCurrent	139000000	USD
CY2012Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	270000000	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	50000000	USD
CY2012Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	159000000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	212000000	USD
CY2011Q4	us-gaap	Accrued Rent Current AccruedRentCurrent	57000000	USD
CY2011Q4	us-gaap	Accrued Vacation Current AccruedVacationCurrent	248000000	USD
CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	85000000	USD
CY2011Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	162000000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	209000000	USD
CY2011Q4	us-gaap	Deferred Compensation Cash Based Arrangements Liability Current DeferredCompensationCashBasedArrangementsLiabilityCurrent	110000000	USD
CY2012Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	70000000	USD
CY2011Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	56000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	69000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	67000000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	148000000	USD
CY2012Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	376000000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	107000000	USD
CY2011Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	311000000	USD
CY2011Q4	luv	Total Recorded Lfmp Construction Costs TotalRecordedLfmpConstructionCosts	202000000	USD
CY2012Q4	us-gaap	Other Deferred Compensation Arrangements Liability Classified Noncurrent OtherDeferredCompensationArrangementsLiabilityClassifiedNoncurrent	141000000	USD
CY2011Q4	us-gaap	Other Deferred Compensation Arrangements Liability Classified Noncurrent OtherDeferredCompensationArrangementsLiabilityClassifiedNoncurrent	125000000	USD
CY2012Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	128000000	USD
CY2011Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	165000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1004000000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1300000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	880000000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1410000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	5000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	6000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	6000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	5000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	6000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	18000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	46000000	USD
CY2012Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	208000000	USD
CY2012Q4	luv	Long Term Debt And Capital Lease Maturities Repayments Of Principal In Year One After Current Year LongTermDebtAndCapitalLeaseMaturitiesRepaymentsOfPrincipalInYearOneAfterCurrentYear	186000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	534000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	204000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	615000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	523000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	971000000	USD
CY2011Q4	luv	Debtdiscountandissuancecosts Debtdiscountandissuancecosts	26000000	USD
CY2012Q4	luv	Debtdiscountandissuancecosts Debtdiscountandissuancecosts	21000000	USD
CY2012Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	2500000000	USD
CY2012Q4	luv	Maximum Additional Number Of Assets Pledged As Collateral In Case Obligations Related To Fuel Derivatives Exceed Certain Thresholds MaximumAdditionalNumberOfAssetsPledgedAsCollateralInCaseObligationsRelatedToFuelDerivativesExceedCertainThresholds	50	pure
CY2012Q4	luv	Net Book Value Of Additional Assets Pledged As Collateral In Case Obligations Related To Fuel Derivatives Exceed Certain Thresholds NetBookValueOfAdditionalAssetsPledgedAsCollateralInCaseObligationsRelatedToFuelDerivativesExceedCertainThresholds	1100000000	USD
CY2012Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	45000000	USD
CY2011Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	177000000	USD
CY2012Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	8000000	USD
CY2011Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	132000000	USD
CY2012Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	37000000	USD
CY2011Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	45000000	USD
CY2012Q4	us-gaap	Capital Leased Assets Number Of Units CapitalLeasedAssetsNumberOfUnits	2	CapitalLeases
CY2011Q4	us-gaap	Capital Leased Assets Number Of Units CapitalLeasedAssetsNumberOfUnits	7	CapitalLeases
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	943000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	847000000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	631000000	USD
CY2012Q4	us-gaap	Property Subject To Or Available For Operating Lease Number Of Units PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits	187	pure
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	10000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	36000000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	3000000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	33000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	663000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	693000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2161000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	5086000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	-5000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	-49000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	-91000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	-105000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	-105000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	-338000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	-693000000	USD
CY2012Q4	luv	Operating Leases Future Minimum Payments Net Current OperatingLeasesFutureMinimumPaymentsNetCurrent	688000000	USD
CY2012Q4	luv	Operating Leases Future Minimum Payments Net In Two Years OperatingLeasesFutureMinimumPaymentsNetInTwoYears	614000000	USD
CY2012Q4	luv	Operating Leases Future Minimum Payments Net In Three Years OperatingLeasesFutureMinimumPaymentsNetInThreeYears	507000000	USD
CY2012Q4	luv	Operating Leases Future Minimum Payments Net In Four Years OperatingLeasesFutureMinimumPaymentsNetInFourYears	392000000	USD
CY2012Q4	luv	Operating Leases Future Minimum Payments Net In Five Years OperatingLeasesFutureMinimumPaymentsNetInFiveYears	369000000	USD
CY2012Q4	luv	Operating Leases Future Minimum Payments Net Thereafter OperatingLeasesFutureMinimumPaymentsNetThereafter	1823000000	USD
CY2012Q4	luv	Operating Leases Future Minimum Payments Net OperatingLeasesFutureMinimumPaymentsNet	4393000000	USD
CY2012Q4	luv	Capital And Operating Lease Renewal Term CapitalAndOperatingLeaseRenewalTerm	one to five years
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	750000000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	774000000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	746000000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	757000000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	775000000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	747000000	shares
CY2012	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	3000000	USD
CY2011	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2010	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	459000000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	178000000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	424000000	USD
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	6000000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2011Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-107000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	53000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	1000000	USD
CY2012Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	49000000	USD
CY2012	us-gaap	Gain Loss On Components Excluded From Assessment Of Price Risk Cash Flow Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfPriceRiskCashFlowHedgeEffectiveness	36000000	USD
CY2011	us-gaap	Gain Loss On Components Excluded From Assessment Of Price Risk Cash Flow Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfPriceRiskCashFlowHedgeEffectiveness	107000000	USD
CY2010	us-gaap	Gain Loss On Components Excluded From Assessment Of Price Risk Cash Flow Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfPriceRiskCashFlowHedgeEffectiveness	134000000	USD
CY2012Q4	us-gaap	Price Risk Cash Flow Hedge Unrealized Gain Loss To Be Reclassified During Next12 Months PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months	92000000	USD
CY2012	luv	Gain Loss On Price Risk Hedge Ineffectiveness And Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments GainLossOnPriceRiskHedgeIneffectivenessAndGainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments	52000000	USD
CY2012Q4	luv	Maximum Sum Of Derivatives Of Counterparty To Be Included In Other MaximumSumOfDerivativesOfCounterpartyToBeIncludedInOther	20000000	USD
CY2012Q4	luv	Cash Collateral Percent Of Fair Value Fuel Derivatives Contracts CashCollateralPercentOfFairValueFuelDerivativesContracts	1	pure
CY2012	luv	Auction Rate Securities Auction Frequency AuctionRateSecuritiesAuctionFrequency	30-35 days
CY2012Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	14000000	USD
CY2012Q4	luv	Auction Rate Securities Lower Remaining Maturity Range AuctionRateSecuritiesLowerRemainingMaturityRange	6	Years
CY2012Q4	luv	Auction Rate Securities Higher Remaining Maturity Range AuctionRateSecuritiesHigherRemainingMaturityRange	35	Years
CY2012	us-gaap	Availableforsale Securities Sold At Par AvailableforsaleSecuritiesSoldAtPar	413000000	USD
CY2008Q1	us-gaap	Availableforsale Securities Failed Auction Value AvailableforsaleSecuritiesFailedAuctionValue	463000000	USD
CY2012Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	31000000	USD
CY2012Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	126000000	USD
CY2012Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	1624000000	USD
CY2012Q4	us-gaap	Assets Fair Value Disclosure Recurring AssetsFairValueDisclosureRecurring	4059000000	USD
CY2012Q4	us-gaap	Other Liabilities Fair Value Disclosure OtherLiabilitiesFairValueDisclosure	137000000	USD
CY2012Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	1017000000	USD
CY2011Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	66000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	40000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Deferred Gain On Sale Leaseback Transaction DeferredTaxAssetsDeferredGainOnSaleLeasebackTransaction	24000000	USD
CY2012Q4	luv	Deferred Tax Assets Capital And Operating Leases DeferredTaxAssetsCapitalAndOperatingLeases	179000000	USD
CY2010	luv	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalFairValue	10000000	USD
CY2011Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	132000000	USD
CY2011Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	2014000000	USD
CY2011Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	43000000	USD
CY2011Q4	us-gaap	Assets Fair Value Disclosure Recurring AssetsFairValueDisclosureRecurring	4579000000	USD
CY2011Q4	us-gaap	Other Liabilities Fair Value Disclosure OtherLiabilitiesFairValueDisclosure	121000000	USD
CY2011Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	1531000000	USD
CY2012	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	62000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	1003000000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	489000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	1112000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	80000000	USD
CY2012Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	260000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss	22000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	27000000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	784000000	USD
CY2011	us-gaap	Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings	26000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	449000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	575000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	176000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss	33000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	80000000	USD
CY2010	luv	Aggregate Cost Of Discount Off Market Value For Shares Available Under Employee Stock Purchase Plan AggregateCostOfDiscountOffMarketValueForSharesAvailableUnderEmployeeStockPurchasePlan	1.23	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1000000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4000000	USD
CY2011	luv	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalFairValue	13000000	USD
CY2012	luv	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalFairValue	13000000	USD
CY2012Q4	luv	Stock Available For Issue Number Employee Stock Purchase Plan StockAvailableForIssueNumberEmployeeStockPurchasePlan	3000000	shares
CY2012	luv	Percentage Of Market Value For Shares Available Under Employee Stock Purchase Plan PercentageOfMarketValueForSharesAvailableUnderEmployeeStockPurchasePlan	0.9	pure
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	11000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-46000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	69000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	3000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	63000000	USD
CY2012	us-gaap	Common Stock Voting Rights CommonStockVotingRights	entitled to one vote per share on all matters submitted to a vote of the Shareholders
CY2012Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	36000000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	26000000	shares
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	16000000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13000000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12000000	USD
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	23000000	USD
CY2012	luv	Discount Percentage Off Market Value For Shares Available Under Employee Stock Purchase Plan DiscountPercentageOffMarketValueForSharesAvailableUnderEmployeeStockPurchasePlan	0.1	pure
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	-3000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y1M6D
CY2011	luv	Aggregate Cost Of Discount Off Market Value For Shares Available Under Employee Stock Purchase Plan AggregateCostOfDiscountOffMarketValueForSharesAvailableUnderEmployeeStockPurchasePlan	1.03	USD
CY2012	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	2200000	shares
CY2011	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	1700000	shares
CY2010	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	1300000	shares
CY2010Q4	luv	Weighted Average Fair Value Of Stock Purchase Right Under Employee Stock Purchase Plan WeightedAverageFairValueOfStockPurchaseRightUnderEmployeeStockPurchasePlan	11.25
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CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	370000000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	316000000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	350000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	107000000	USD
CY2012	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	20000000	USD
CY2012	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4000000	USD
CY2012	us-gaap	Defined Benefit Plan Benefits Paid DefinedBenefitPlanBenefitsPaid	5000000	USD
CY2012	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	0	USD
CY2012Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	148000000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	91000000	USD
CY2011	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	17000000	USD
CY2011	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4000000	USD
CY2011	us-gaap	Defined Benefit Plan Benefits Paid DefinedBenefitPlanBenefitsPaid	5000000	USD
CY2011	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	3000000	USD
CY2012	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-5000000	USD
CY2011	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	3000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	6000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	8000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	11000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	14000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	17000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	136000000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	0	USD
CY2012	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	17000000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	3000000	USD
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CY2012Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-148000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	44000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	18000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	26000000	USD
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CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.30
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	198000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	52000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-107000000	USD
CY2012	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	5000000	USD
CY2012	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	19000000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	6000000	USD
CY2011	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	15000000	USD
CY2010	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	16000000	USD
CY2010	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4000000	USD
CY2010	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	5000000	USD
CY2010	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	15000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0290	pure
CY2011Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0405	pure
CY2010Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0430	pure
CY2012	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	0.0800	pure
CY2011	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	0.0750	pure
CY2010	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	0.0750	pure
CY2012	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.05	pure
CY2012Q4	us-gaap	Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	2024
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	19000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3812000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	70000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3915000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	281000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	77000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	339000000	USD
CY2012Q4	luv	Deferred Tax Assets Net Operating Losses And Credit Carrybacks DeferredTaxAssetsNetOperatingLossesAndCreditCarrybacks	83000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	170000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1277000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-2638000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3537000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	84000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3621000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	155000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Deferred Gain On Sale Leaseback Transaction DeferredTaxAssetsDeferredGainOnSaleLeasebackTransaction	44000000	USD
CY2011Q4	luv	Deferred Tax Assets Capital And Operating Leases DeferredTaxAssetsCapitalAndOperatingLeases	141000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	267000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	78000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	207000000	USD
CY2011Q4	luv	Deferred Tax Assets Net Operating Losses And Credit Carrybacks DeferredTaxAssetsNetOperatingLossesAndCreditCarrybacks	212000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	171000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1318000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-2303000000	USD
CY2012Q4	luv	Deferred Tax Assets Tax Deferred Expense Engine Maintenance DeferredTaxAssetsTaxDeferredExpenseEngineMaintenance	84000000	USD
CY2011Q4	luv	Deferred Tax Assets Tax Deferred Expense Engine Maintenance DeferredTaxAssetsTaxDeferredExpenseEngineMaintenance	43000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	33000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	287000000	USD
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CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	10000000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-33000000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	13000000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	17000000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4000000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	122000000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	6000000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	217000000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	61000000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	8000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	368000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	128000000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	69000000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	297000000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	240000000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	10000000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	14000000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	114000000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	13000000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	13000000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	5000000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	261000000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	8000000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	18000000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1000000	USD
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.35	pure
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5000000	USD
CY2012Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	230000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	81000000	USD
CY2011	us-gaap	Income Tax Examination Year Under Examination IncomeTaxExaminationYearUnderExamination	2011
CY2012	us-gaap	Income Tax Examination Year Under Examination IncomeTaxExaminationYearUnderExamination	2012
CY2012	us-gaap	Operating Loss Carryforwards Expiration Dates OperatingLossCarryforwardsExpirationDates	2017 to 2031
CY2012Q1	us-gaap	Sales Revenue Net SalesRevenueNet	3991000000	USD
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	4616000000	USD
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	4309000000	USD
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	4173000000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	22000000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	460000000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	51000000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	91000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	159000000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	33000000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	125000000	USD
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.13
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.02
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.30
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.02
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.11
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.13
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.11
CY2011Q1	us-gaap	Sales Revenue Net SalesRevenueNet	3103000000	USD
CY2011Q2	us-gaap	Sales Revenue Net SalesRevenueNet	4136000000	USD
CY2011Q3	us-gaap	Sales Revenue Net SalesRevenueNet	4311000000	USD
CY2011Q4	us-gaap	Sales Revenue Net SalesRevenueNet	4108000000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	114000000	USD
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	207000000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	225000000	USD
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	147000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	18000000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	275000000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-226000000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	255000000	USD
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.21
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-.18
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.01
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-.18
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.20
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.20
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	.01
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	.21
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	98000000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	228000000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	16000000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	78000000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	5000000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	161000000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	-140000000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	152000000	USD

Files In Submission

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$LUV
SOUTHWEST AIRLINES CO Stock $luv

2012 Q4 Form 10-K Financial Statement

#000119312513041608 Filed on February 07, 2013

Income Statement

Balance Sheet

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$LUV SOUTHWEST AIRLINES CO Stock $luv

2012 Q4 Form 10-K Financial Statement

#000119312513041608 Filed on February 07, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LUV
SOUTHWEST AIRLINES CO Stock $luv