$DAL
DELTA AIR LINES, INC. Stock $dal

$dal Overview Financials Valuation SEC Filings Company Website

2014 Form 10-K Financial Statement

#000002790415000003 Filed on February 11, 2015

Income Statement

Concept	2014	2013 Q4	2013 Q3
Revenue	$40.36B	$9.076B	$10.49B
YoY Change	6.85%	5.51%	5.71%
Cost Of Revenue	$25.31B	$5.014B	$7.553B
YoY Change	20.75%	-1.74%	0.99%
Gross Profit	$15.05B	$4.062B	$2.937B
YoY Change	-10.47%	16.09%	20.17%
Gross Profit Margin	37.29%	44.76%	28.0%
Selling, General & Admin	$10.91B	$2.421B	$696.0M
YoY Change	10.95%	6.75%	13.36%
% of Gross Profit	72.46%	59.6%	23.7%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.771B	$420.0M	$418.0M
YoY Change	6.82%	5.26%	6.63%
% of Gross Profit	11.77%	10.34%	14.23%
Operating Expenses	$38.16B	$3.201B	$8.927B
YoY Change	11.01%	5.78%	3.62%
Operating Profit	$2.206B	$701.0M	$1.563B
YoY Change	-35.12%	99.15%	19.5%
Interest Expense	$650.0M	-$206.0M	$176.0M
YoY Change	-23.71%	-11.97%	-10.66%
% of Operating Profit	29.47%	-29.39%	11.26%
Other Income/Expense, Net	-$1.134B	-$20.00M	-$200.0M
YoY Change	29.9%		-21.88%
Pretax Income	$1.072B	$475.0M	$1.363B
YoY Change	-57.58%	4218.18%	29.56%
Income Tax	$413.0M	-$8.004B	-$6.000M
% Of Pretax Income	38.53%	-1685.05%	-0.44%
Net Earnings	$659.0M	$8.479B	$1.369B
YoY Change	-93.75%	121028.57%	30.75%
Net Earnings / Revenue	1.63%	93.42%	13.05%
Basic Earnings Per Share	$0.79	$10.02	$1.61
Diluted Earnings Per Share	$0.78	$9.89	$1.59
COMMON SHARES
Basic Shares Outstanding	836.0M shares		851.0M shares
Diluted Shares Outstanding	845.0M shares		861.0M shares

Balance Sheet

Concept	2014	2013 Q4	2013 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.305B	$3.803B	$4.464B
YoY Change	-13.09%	12.71%	38.08%
Cash & Equivalents	$2.088B	$2.844B	$3.018B
Short-Term Investments	$1.217B	$959.0M	$1.446B
Other Short-Term Assets	$1.779B	$3.173B	$1.486B
YoY Change	-43.93%	45.42%	-45.81%
Inventory	$852.0M	$1.063B	$1.032B
Prepaid Expenses
Receivables	$2.297B	$1.609B	$1.969B
Other Receivables	$925.0M	$3.000M	$0.00
Total Short-Term Assets	$9.158B	$9.651B	$8.951B
YoY Change	-5.11%	16.67%	9.65%
LONG-TERM ASSETS
Property, Plant & Equipment	$21.93B	$21.85B	$21.30B
YoY Change	0.34%	5.51%	3.39%
Goodwill		$9.794B	$9.794B
YoY Change		0.0%	0.0%
Intangibles		$4.658B	$4.675B
YoY Change		-0.45%	-0.47%
Long-Term Investments		$60.00M	$360.0M
YoY Change		-83.33%
Other Assets	$8.521B	$1.303B	$1.280B
YoY Change	35.36%	19.32%	16.47%
Total Long-Term Assets	$44.85B	$42.45B	$37.05B
YoY Change	5.27%	17.02%	2.37%
TOTAL ASSETS
Total Short-Term Assets	$9.158B	$9.651B	$8.951B
Total Long-Term Assets	$44.85B	$42.45B	$37.05B
Total Assets	$54.01B	$52.10B	$46.00B
YoY Change	3.35%	16.96%	3.71%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.622B	$2.300B	$2.592B
YoY Change	14.0%	0.31%	11.48%
Accrued Expenses	$4.393B	$4.176B	$2.162B
YoY Change	5.2%	48.72%	-12.68%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.184B	$1.449B	$1.823B
YoY Change	-23.46%	-3.85%	17.92%
Total Short-Term Liabilities	$16.85B	$14.15B	$14.13B
YoY Change	19.04%	6.65%	6.88%
LONG-TERM LIABILITIES
Long-Term Debt	$8.477B	$9.396B	$10.08B
YoY Change	-13.46%	-11.35%	-9.31%
Other Long-Term Liabilities	$19.87B	$1.711B	$1.709B
YoY Change	19.24%	3.76%	-0.12%
Total Long-Term Liabilities	$28.35B	$26.46B	$31.73B
YoY Change	7.14%	-20.81%	1.76%
TOTAL LIABILITIES
Total Short-Term Liabilities	$16.85B	$14.15B	$14.13B
Total Long-Term Liabilities	$28.35B	$26.46B	$31.73B
Total Liabilities	$45.19B	$40.61B	$45.86B
YoY Change	11.29%	-13.01%	3.29%
SHAREHOLDERS EQUITY
Retained Earnings		$3.049B	-$5.379B
YoY Change		-141.26%	-27.26%
Common Stock		$13.98B	$14.10B
YoY Change		-0.62%	0.36%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$258.0M	$256.0M
YoY Change		10.26%	9.4%
Treasury Stock Shares		18.04M shares	17.98M shares
Shareholders Equity	$8.813B	$11.64B	$137.0M
YoY Change
Total Liabilities & Shareholders Equity	$54.01B	$52.25B	$46.00B
YoY Change	3.35%	17.29%	3.71%

Cashflow Statement

Concept	2014	2013 Q4	2013 Q3
OPERATING ACTIVITIES
Net Income	$659.0M	$8.479B	$1.369B
YoY Change	-93.75%	121028.57%	30.75%
Depreciation, Depletion And Amortization	$1.771B	$420.0M	$418.0M
YoY Change	6.82%	5.26%	6.63%
Cash From Operating Activities	$4.947B	$1.131B	$1.161B
YoY Change	9.84%	105.64%	150.76%
INVESTING ACTIVITIES
Capital Expenditures	-$2.249B	-$952.0M	-$631.0M
YoY Change	-12.42%	76.95%	48.12%
Acquisitions
YoY Change
Other Investing Activities	-$48.00M	$4.000M	$14.00M
YoY Change	242.86%	-20.0%	-800.0%
Cash From Investing Activities	-$2.463B	-$948.0M	-$617.0M
YoY Change	-10.63%	77.86%	44.16%
FINANCING ACTIVITIES
Cash Dividend Paid	$251.0M
YoY Change	146.08%
Common Stock Issuance & Retirement, Net	$1.100B
YoY Change	340.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$3.240B	-357.0M	-491.0M
YoY Change	145.45%	-385.6%	63.67%
NET CHANGE
Cash From Operating Activities	$4.947B	1.131B	1.161B
Cash From Investing Activities	-$2.463B	-948.0M	-617.0M
Cash From Financing Activities	-$3.240B	-357.0M	-491.0M
Net Change In Cash	-$756.0M	-174.0M	53.00M
YoY Change	-276.64%	-222.54%	-120.0%
FREE CASH FLOW
Cash From Operating Activities	$4.947B	$1.131B	$1.161B
Capital Expenditures	-$2.249B	-$952.0M	-$631.0M
Free Cash Flow	$7.196B	$2.083B	$1.792B
YoY Change	1.75%	91.45%	101.57%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012	dal	Accumulated Other Comprehensive Income Loss Changes In Fair Value Netof Tax AccumulatedOtherComprehensiveIncomeLossChangesInFairValueNetofTax	-1975000000	USD
CY2013	dal	Accumulated Other Comprehensive Income Loss Changes In Fair Value Netof Tax AccumulatedOtherComprehensiveIncomeLossChangesInFairValueNetofTax	3037000000	USD
CY2014	dal	Accumulated Other Comprehensive Income Loss Changes In Fair Value Netof Tax AccumulatedOtherComprehensiveIncomeLossChangesInFairValueNetofTax	-2174000000	USD
CY2012	dal	Accumulated Other Comprehensive Income Loss Reclassification To Earnings Netof Tax AccumulatedOtherComprehensiveIncomeLossReclassificationToEarningsNetofTax	164000000	USD
CY2013	dal	Accumulated Other Comprehensive Income Loss Reclassification To Earnings Netof Tax AccumulatedOtherComprehensiveIncomeLossReclassificationToEarningsNetofTax	410000000	USD
CY2014	dal	Accumulated Other Comprehensive Income Loss Reclassification To Earnings Netof Tax AccumulatedOtherComprehensiveIncomeLossReclassificationToEarningsNetofTax	-7000000	USD
CY2012Q4	dal	Accumulated Other Comprehensive Income Valuation Allowance Net Of Tax AccumulatedOtherComprehensiveIncomeValuationAllowanceNetOfTax	3100000000	USD
CY2013Q4	dal	Accumulated Other Comprehensive Income Valuation Allowance Net Of Tax AccumulatedOtherComprehensiveIncomeValuationAllowanceNetOfTax	13000000	USD
CY2014Q4	dal	Accumulated Other Comprehensive Income Valuation Allowance Net Of Tax AccumulatedOtherComprehensiveIncomeValuationAllowanceNetOfTax	10000000	USD
CY2012	dal	Adjustment Skymiles Used Pursuant To Advance Purchase Agreement AdjustmentSkymilesUsedPursuantToAdvancePurchaseAgreement	333000000	USD
CY2013	dal	Adjustment Skymiles Used Pursuant To Advance Purchase Agreement AdjustmentSkymilesUsedPursuantToAdvancePurchaseAgreement	333000000	USD
CY2014	dal	Adjustment Skymiles Used Pursuant To Advance Purchase Agreement AdjustmentSkymilesUsedPursuantToAdvancePurchaseAgreement	0	USD
CY2013Q4	dal	Amount Withheld For Credit Card Processing Agreements AmountWithheldForCreditCardProcessingAgreements	0	USD
CY2014Q4	dal	Amount Withheld For Credit Card Processing Agreements AmountWithheldForCreditCardProcessingAgreements	0	USD
CY2014	dal	Annualizedfiveyearrateofreturnonplanassets Annualizedfiveyearrateofreturnonplanassets	0.09	Rate
CY2014	dal	Annualizedthreeyearrateofreturnonplanassets Annualizedthreeyearrateofreturnonplanassets	0.11	Rate
CY2014	dal	Assumed Health Care Plan Post Age AssumedHealthCarePlanPostAge	P65Y
CY2014	dal	Assumed Health Care Plan Pre Age AssumedHealthCarePlanPreAge	P65Y
CY2014Q4	dal	Available For Sale Securities Debt Maturities After One Year Through Three Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearThroughThreeYearsFairValue	791000000	USD
CY2014Q4	dal	Availableforsale Securities Debt Maturities Dueafter Five Years AvailableforsaleSecuritiesDebtMaturitiesDueafterFiveYears	88000000	USD
CY2014Q4	dal	Availableforsale Securities Debt Maturities Dueafter Three Years Through Five Years AvailableforsaleSecuritiesDebtMaturitiesDueafterThreeYearsThroughFiveYears	163000000	USD
CY2014Q4	dal	Capital Stock Shares Authorized CapitalStockSharesAuthorized	2000000000	shares
CY2013Q4	dal	Cash Reserve For Credit Card Processing Agreements CashReserveForCreditCardProcessingAgreements	0	USD
CY2014Q4	dal	Cash Reserve For Credit Card Processing Agreements CashReserveForCreditCardProcessingAgreements	0	USD
CY2014	dal	Contract Carriers Expiration Dates ContractCarriersExpirationDates	2016 to 2024
CY2014Q4	dal	Debt Instrument Amortization Discount Premium Net After Year Five DebtInstrumentAmortizationDiscountPremiumNetAfterYearFive	4000000	USD
CY2014Q4	dal	Debt Instrument Amortization Discount Premium Net Year Five DebtInstrumentAmortizationDiscountPremiumNetYearFive	12000000	USD
CY2014Q4	dal	Debt Instrument Amortization Discount Premium Net Year Four DebtInstrumentAmortizationDiscountPremiumNetYearFour	15000000	USD
CY2014Q4	dal	Debt Instrument Amortization Discount Premium Net Year One DebtInstrumentAmortizationDiscountPremiumNetYearOne	19000000	USD
CY2014Q4	dal	Debt Instrument Amortization Discount Premium Net Year Three DebtInstrumentAmortizationDiscountPremiumNetYearThree	19000000	USD
CY2014Q4	dal	Debt Instrument Amortization Discount Premium Net Year Two DebtInstrumentAmortizationDiscountPremiumNetYearTwo	21000000	USD
CY2014	dal	Debt Instrument Periodic Payment Percentage Of Principal DebtInstrumentPeriodicPaymentPercentageOfPrincipal	0.01	Rate
CY2014Q4	dal	Estimated Cost Of Project EstimatedCostOfProject	180000000	USD
CY2012	dal	Income Tax Allocation IncomeTaxAllocation	0.000	Rate
CY2013	dal	Income Tax Allocation IncomeTaxAllocation	0.127	Rate
CY2014	dal	Income Tax Allocation IncomeTaxAllocation	0.000	Rate
CY2014	dal	Income Tax Recognition Period Tax Credit Carryforward IncomeTaxRecognitionPeriodTaxCreditCarryforward	P25Y
CY2014	dal	Incometaxbenefitrelatedtotaxallocation Incometaxbenefitrelatedtotaxallocation	1900000000	USD
CY2014	dal	Incometaxexpenserelatedtotaxallocation Incometaxexpenserelatedtotaxallocation	321000000	USD
CY2014	dal	Incometaxexpenseremaininginaccumulatedothercomprehensiveincome Incometaxexpenseremaininginaccumulatedothercomprehensiveincome	1900000000	USD
CY2012	dal	Non Cash Income Tax Expense Recorded In Other Comprehensive Income NonCashIncomeTaxExpenseRecordedInOtherComprehensiveIncome	0	USD
CY2013	dal	Non Cash Income Tax Expense Recorded In Other Comprehensive Income NonCashIncomeTaxExpenseRecordedInOtherComprehensiveIncome	321000000	USD
CY2014	dal	Non Cash Income Tax Expense Recorded In Other Comprehensive Income NonCashIncomeTaxExpenseRecordedInOtherComprehensiveIncome	4000000	USD
CY2014	dal	Ownership Interest Percent Threshold To Consolidate OwnershipInterestPercentThresholdToConsolidate	0.50
CY2014Q4	dal	Percentage Of Employees Represented By Unions Under Collective Bargaining Agreements PercentageOfEmployeesRepresentedByUnionsUnderCollectiveBargainingAgreements	0.18
CY2014Q4	dal	Rate Of Interest On Equity To Be Paid On Exercising Put Right RateOfInterestOnEquityToBePaidOnExercisingPutRight	0.10
CY2012	dal	Redevelopment Project Fundedby Third Parties RedevelopmentProjectFundedbyThirdParties	214000000	USD
CY2013	dal	Redevelopment Project Fundedby Third Parties RedevelopmentProjectFundedbyThirdParties	114000000	USD
CY2014	dal	Redevelopment Project Fundedby Third Parties RedevelopmentProjectFundedbyThirdParties	7000000	USD
CY2013	dal	Required Amount Of Withholding Of Payments For Credit Card Agreements RequiredAmountOfWithholdingOfPaymentsForCreditCardAgreements	0	USD
CY2014	dal	Required Amount Of Withholding Of Payments For Credit Card Agreements RequiredAmountOfWithholdingOfPaymentsForCreditCardAgreements	0	USD
CY2013	dal	Required Cash Reserve For Credit Card Agreements RequiredCashReserveForCreditCardAgreements	0	USD
CY2014	dal	Required Cash Reserve For Credit Card Agreements RequiredCashReserveForCreditCardAgreements	0	USD
CY2014Q4	dal	Special Project Bonds Face Amount Issued By Others SpecialProjectBondsFaceAmountIssuedByOthers	800000000	USD
CY2014	dal	Term Of Agreement To Sublease Space TermOfAgreementToSubleaseSpace	33	Y
CY2014	dal	Terms Of Aircraft Lease TermsOfAircraftLease	the lease would have (1) a rate equal to the aircraft-related debt payments of Shuttle America as if 90% of the aircraft was financed by Shuttle America and (2) other specified terms and conditions
CY2012	dal	Transferof Debtto Deferred Revenue TransferofDebttoDeferredRevenue	0	USD
CY2013	dal	Transferof Debtto Deferred Revenue TransferofDebttoDeferredRevenue	285000000	USD
CY2014	dal	Transferof Debtto Deferred Revenue TransferofDebttoDeferredRevenue	0	USD
CY2014	dal	Unfunded Liability Defined Benefit Plan Interest Rate UnfundedLiabilityDefinedBenefitPlanInterestRate	0.0885	Rate
CY2014	dal	Unrealized Gainon Foreign Currency Exchange Contracts UnrealizedGainonForeignCurrencyExchangeContracts	150000000	USD
CY2012	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	10.91
CY2013	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	14.97
CY2014	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	31.46
CY2014	dei	Amendment Flag AmendmentFlag	false
CY2014	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2014	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2014	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2014
CY2014	dei	Document Period End Date DocumentPeriodEndDate	2014-12-31
CY2014	dei	Document Type DocumentType	10-K
CY2014	dei	Entity Central Index Key EntityCentralIndexKey	0000027904
CY2015Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	824271663	shares
CY2014	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2014	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2014Q2	dei	Entity Public Float EntityPublicFloat	32600000000	USD
CY2014	dei	Entity Registrant Name EntityRegistrantName	DELTA AIR LINES INC /DE/
CY2014	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2014	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2300000000	USD
CY2014Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2622000000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7792000000	USD
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	9340000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-4000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-7000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-26000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-16000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-474000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-263000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	219000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	222000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	6288000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	8307000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	5323000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7517000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-6766000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-8577000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5130000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7311000000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	13982000000	USD
CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	12981000000	USD
CY2012	us-gaap	Advertising Expense AdvertisingExpense	200000000	USD
CY2013	us-gaap	Advertising Expense AdvertisingExpense	200000000	USD
CY2014	us-gaap	Advertising Expense AdvertisingExpense	200000000	USD
CY2013Q4	us-gaap	Air Traffic Liability Current AirTrafficLiabilityCurrent	4122000000	USD
CY2014Q4	us-gaap	Air Traffic Liability Current AirTrafficLiabilityCurrent	4296000000	USD
CY2012	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	1955000000	USD
CY2013	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	1852000000	USD
CY2014	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	1828000000	USD
CY2012	us-gaap	Aircraft Rental AircraftRental	272000000	USD
CY2013	us-gaap	Aircraft Rental AircraftRental	209000000	USD
CY2014	us-gaap	Aircraft Rental AircraftRental	233000000	USD
CY2012	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	5647000000	USD
CY2013	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	5669000000	USD
CY2014	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	5237000000	USD
CY2013Q4	us-gaap	Airline Related Inventory Net AirlineRelatedInventoryNet	357000000	USD
CY2014Q4	us-gaap	Airline Related Inventory Net AirlineRelatedInventoryNet	318000000	USD
CY2013Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	118000000	USD
CY2014Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	127000000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	23000000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	21000000	USD
CY2012	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	193000000	USD
CY2013	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	154000000	USD
CY2014	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	59000000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	70000000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	70000000	USD
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	55000000	USD
CY2012Q4	us-gaap	Assets Assets	44550000000	USD
CY2013Q4	us-gaap	Assets Assets	52252000000	USD
CY2014Q4	us-gaap	Assets Assets	54121000000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	9651000000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	12465000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	1217000000	USD
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	175000000	USD
CY2014	us-gaap	Business Acquisition Date Of Acquisition Agreement1 BusinessAcquisitionDateOfAcquisitionAgreement1	2012-06-22
CY2012Q2	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	180000000	USD
CY2014Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	107000000	USD
CY2012	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	28000000	USD
CY2013	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	67000000	USD
CY2014	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	28000000	USD
CY2014Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	291000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	519000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	157000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	33000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	51000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	97000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	139000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	42000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	121000000	USD
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	398000000	USD
CY2012	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	76000000	USD
CY2013	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	110000000	USD
CY2014	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	129000000	USD
CY2013Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	383000000	USD
CY2014Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	411000000	USD
CY2012	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	990000000	USD
CY2013	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	937000000	USD
CY2014	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	934000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2657000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2416000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2844000000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2088000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	2487000000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	1612000000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-241000000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	428000000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-756000000	USD
CY2014	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	174000000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2014Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2014Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	27000000	shares
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.00
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1500000000	shares
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1500000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	869484981	shares
CY2014Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	845048310	shares
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	0	USD
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	0	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-802000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	13987000000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1522000000	USD
CY2014Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	739000000	USD
CY2014Q4	us-gaap	Construction Payable Current And Noncurrent ConstructionPayableCurrentAndNoncurrent	733000000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-24000000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-21000000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	14000000	USD
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-1000000	USD
CY2014	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	11000000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-15000000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3000000	USD
CY2014Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	9800000000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9000000	USD
CY2013Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	11228000000	USD
CY2014Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	9469000000	USD
CY2014	us-gaap	Debt Instrument Collateral DebtInstrumentCollateral	34
CY2014	us-gaap	Debt Instrument Covenant Description DebtInstrumentCovenantDescription	0.75:1
CY2014Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1100000000	USD
CY2013Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	11600000000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	383000000	USD
CY2014Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	90000000	USD
CY2013Q4	us-gaap	Deferred Compensation Cash Based Arrangements Liability Current DeferredCompensationCashBasedArrangementsLiabilityCurrent	506000000	USD
CY2014Q4	us-gaap	Deferred Compensation Cash Based Arrangements Liability Current DeferredCompensationCashBasedArrangementsLiabilityCurrent	1100000000	USD
CY2010Q1	us-gaap	Deferred Compensation Cash Based Arrangements Liability Current DeferredCompensationCashBasedArrangementsLiabilityCurrent	372000000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4000000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-7197000000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	424000000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	17000000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7991000000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	414000000	USD
CY2013Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7142000000	USD
CY2014Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6791000000	USD
CY2012	us-gaap	Deferred Revenue Additions DeferredRevenueAdditions	675000000	USD
CY2013	us-gaap	Deferred Revenue Additions DeferredRevenueAdditions	675000000	USD
CY2014	us-gaap	Deferred Revenue Additions DeferredRevenueAdditions	675000000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	13000000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-794000000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-10000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1965000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1824000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Hedging Transactions DeferredTaxAssetsHedgingTransactions	0	USD
CY2014Q4	us-gaap	Deferred Tax Assets Hedging Transactions DeferredTaxAssetsHedgingTransactions	777000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	6728000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	7595000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	1736000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	3275000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	4992000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	4320000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	13870000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	14386000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6024000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	4782000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	698000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	659000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	378000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	357000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	4982000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6033000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	10705000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	10963000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	177000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	46000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1704000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1684000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	639000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	444000000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4799000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4663000000	USD
CY2014	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-3300000000	USD
CY2014	us-gaap	Defined Benefit Plan Amount To Be Amortized From Accumulated Other Comprehensive Income Loss Next Fiscal Year DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear	230000000	USD
CY2013Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0501
CY2014Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0414
CY2014	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.09	Rate
CY2014	us-gaap	Defined Benefit Plan Description Of Direction And Pattern Of Change For Assumed Health Care Cost Trend Rate DefinedBenefitPlanDescriptionOfDirectionAndPatternOfChangeForAssumedHealthCareCostTrendRate	0.05
CY2013Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	9880000000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	10351000000	USD
CY2014	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.01
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1565000000	USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1658000000	USD
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1771000000	USD
CY2012	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1500000000	USD
CY2013	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1600000000	USD
CY2014	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1700000000	USD
CY2013Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	585000000	USD
CY2014Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	1078000000	USD
CY2013Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	65000000	USD
CY2014Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	925000000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	504000000	USD
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-1782000000	USD
CY2012	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	209000000	USD
CY2013	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	86000000	USD
CY2014	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-2186000000	USD
CY2013Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	3000000	USD
CY2014Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	925000000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-15000000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	135000000	USD
CY2014	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	127000000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	211000000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	161000000	USD
CY2014	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	4000000	USD
CY2013Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	146000000	USD
CY2014Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2772000000	USD
CY2014Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	250000000	USD
CY2013	us-gaap	Dividends Dividends	102000000	USD
CY2014	us-gaap	Dividends Dividends	252000000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.20
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.61
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.02
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	12.41
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.95
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.86
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.19
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.80
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.59
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.89
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	12.29
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.86
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.78
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.015	Rate
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-3.172	Rate
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.385	Rate
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	Rate
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	Rate
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	Rate
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.408	Rate
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-3.675	Rate
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.024	Rate
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.040	Rate
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004	Rate
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.039	Rate
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.033	Rate
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.030	Rate
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.020	Rate
CY2013Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	1926000000	USD
CY2014Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	2266000000	USD
CY2014Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	56000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	USD
CY2014	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	1600000000	USD
CY2014	us-gaap	Fair Value Measurements Significant Assumptions FairValueMeasurementsSignificantAssumptions	Volatilities used in these valuations ranged from 26% to 57% depending on the maturity dates, underlying commodities and strike prices of the option contracts.
CY2013Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	738000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	793000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	18000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	16000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	17000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	17000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	18000000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2013Q4	us-gaap	Foreign Currency Cash Flow Hedge Derivative At Fair Value Net ForeignCurrencyCashFlowHedgeDerivativeAtFairValueNet	257000000	USD
CY2014Q4	us-gaap	Foreign Currency Cash Flow Hedge Derivative At Fair Value Net ForeignCurrencyCashFlowHedgeDerivativeAtFairValueNet	73000000	USD
CY2013Q4	us-gaap	Frequent Flier Liability Current FrequentFlierLiabilityCurrent	1861000000	USD
CY2014Q4	us-gaap	Frequent Flier Liability Current FrequentFlierLiabilityCurrent	1580000000	USD
CY2013Q4	us-gaap	Frequent Flier Liability Noncurrent FrequentFlierLiabilityNoncurrent	2559000000	USD
CY2014Q4	us-gaap	Frequent Flier Liability Noncurrent FrequentFlierLiabilityNoncurrent	2602000000	USD
CY2012	us-gaap	Fuel Costs FuelCosts	10150000000	USD
CY2013	us-gaap	Fuel Costs FuelCosts	9397000000	USD
CY2014	us-gaap	Fuel Costs FuelCosts	11668000000	USD
CY2012	us-gaap	Gain Loss On Investments GainLossOnInvestments	-3000000	USD
CY2013	us-gaap	Gain Loss On Investments GainLossOnInvestments	-19000000	USD
CY2014	us-gaap	Gain Loss On Investments GainLossOnInvestments	10000000	USD
CY2012	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-118000000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2014	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-268000000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	9794000000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	9794000000	USD
CY2012Q2	us-gaap	Grants Receivable GrantsReceivable	30000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1025000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2527000000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1072000000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	24000000	USD
CY2014	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-106000000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	16000000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-8013000000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	413000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	899000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	213000000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	228000000	USD
CY2012	us-gaap	Increase Decrease In Air Traffic Liability1 IncreaseDecreaseInAirTrafficLiability1	216000000	USD
CY2013	us-gaap	Increase Decrease In Air Traffic Liability1 IncreaseDecreaseInAirTrafficLiability1	426000000	USD
CY2014	us-gaap	Increase Decrease In Air Traffic Liability1 IncreaseDecreaseInAirTrafficLiability1	174000000	USD
CY2012	us-gaap	Increase Decrease In Frequent Flyer Liability IncreaseDecreaseInFrequentFlyerLiability	-115000000	USD
CY2013	us-gaap	Increase Decrease In Frequent Flyer Liability IncreaseDecreaseInFrequentFlyerLiability	-121000000	USD
CY2014	us-gaap	Increase Decrease In Frequent Flyer Liability IncreaseDecreaseInFrequentFlyerLiability	-238000000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	451000000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	87000000	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-172000000	USD
CY2012	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	-14000000	USD
CY2013	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	-14000000	USD
CY2014	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	922000000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	134000000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-28000000	USD
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-58000000	USD
CY2012	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	116000000	USD
CY2013	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-90000000	USD
CY2014	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	302000000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	51000000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	-231000000	USD
CY2014	us-gaap	Increase Decrease In Restricted Cash And Investments For Operating Activities IncreaseDecreaseInRestrictedCashAndInvestmentsForOperatingActivities	-62000000	USD
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	5000000	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	9000000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	9000000	shares
CY2013Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	4420000000	USD
CY2014Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	4420000000	USD
CY2013Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4658000000	USD
CY2014Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4603000000	USD
CY2012	us-gaap	Interest Expense InterestExpense	1005000000	USD
CY2013	us-gaap	Interest Expense InterestExpense	852000000	USD
CY2014	us-gaap	Interest Expense InterestExpense	650000000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-1005000000	USD
CY2013	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-852000000	USD
CY2014	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-650000000	USD
CY2012	us-gaap	Interest Paid InterestPaid	834000000	USD
CY2013	us-gaap	Interest Paid InterestPaid	698000000	USD
CY2014	us-gaap	Interest Paid InterestPaid	560000000	USD
CY2013Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	-67000000	USD
CY2014Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	-7000000	USD
CY2013Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	706000000	USD
CY2014Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	534000000	USD
CY2012	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7266000000	USD
CY2013	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7720000000	USD
CY2014	us-gaap	Labor And Related Expense LaborAndRelatedExpense	8120000000	USD
CY2014Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1109000000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1709000000	USD
CY2012	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	1336000000	USD
CY2013	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	1410000000	USD
CY2014	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	1442000000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1100000000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1100000000	USD
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1200000000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	52252000000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	54121000000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	14152000000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	16879000000	USD
CY2013Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	26457000000	USD
CY2014Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	28429000000	USD
CY2014Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	1903000000	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	10845000000	USD
CY2014Q4	us-gaap	Long Term Debt LongTermDebt	9379000000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	9795000000	USD
CY2014Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	8561000000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1547000000	USD
CY2014Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1216000000	USD
CY2013Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1449000000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	12741000000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	8270000000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1111000000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1158000000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	2028000000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	2137000000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1326000000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	9396000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-755000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1320000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-3240000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1962000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2756000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2463000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2476000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4504000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4947000000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	1009000000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	7000000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	685000000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	1369000000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	8479000000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	10540000000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	213000000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	801000000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	357000000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	-712000000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	659000000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1150000000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-873000000	USD
CY2014	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1134000000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	34495000000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	34373000000	USD
CY2014	us-gaap	Operating Expenses OperatingExpenses	38156000000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	2175000000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	222000000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	914000000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1563000000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	701000000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	3400000000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	620000000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1579000000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	835000000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-828000000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	2206000000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1707000000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	929000000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	1120000000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	1323000000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	1493000000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	6169000000	USD
CY2014Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	12000000000	USD
CY2014	us-gaap	Operating Loss Carryforwards Expiration Date OperatingLossCarryforwardsExpirationDate	2024-01-01
CY2013Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	2250000000	USD
CY2014Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	2127000000	USD
CY2013Q4	us-gaap	Other Assets OtherAssets	20747000000	USD
CY2014Q4	us-gaap	Other Assets OtherAssets	19727000000	USD
CY2013Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	118000000	USD
CY2014Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	37000000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1303000000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1010000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2168000000	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	2760000000	USD
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2267000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	211000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	482000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1811000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3447000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2181000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2019000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-2984000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2194000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-15000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-186000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	80000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	149000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	224000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	73000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1276000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	196000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	296000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	83000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-19000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	10000000	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1592000000	USD
CY2013	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1520000000	USD
CY2014	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1797000000	USD
CY2012	us-gaap	Other Cost Of Services OtherCostOfServices	732000000	USD
CY2013	us-gaap	Other Cost Of Services OtherCostOfServices	762000000	USD
CY2014	us-gaap	Other Cost Of Services OtherCostOfServices	810000000	USD
CY2012	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	372000000	USD
CY2013	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	506000000	USD
CY2014	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1085000000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1711000000	USD
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2128000000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-27000000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-21000000	USD
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-216000000	USD
CY2012	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-122000000	USD
CY2013	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	131000000	USD
CY2014	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	217000000	USD
CY2012	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	3926000000	USD
CY2013	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	3894000000	USD
CY2014	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	4474000000	USD
CY2013Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	602000000	USD
CY2014Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	561000000	USD
CY2012	us-gaap	Passenger Revenue PassengerRevenue	31754000000	USD
CY2013	us-gaap	Passenger Revenue PassengerRevenue	32942000000	USD
CY2014	us-gaap	Passenger Revenue PassengerRevenue	34954000000	USD
CY2012	us-gaap	Passenger Revenue Mainline PassengerRevenueMainline	25173000000	USD
CY2013	us-gaap	Passenger Revenue Mainline PassengerRevenueMainline	26534000000	USD
CY2014	us-gaap	Passenger Revenue Mainline PassengerRevenueMainline	28688000000	USD
CY2012	us-gaap	Passenger Revenue Regional PassengerRevenueRegional	6581000000	USD
CY2013	us-gaap	Passenger Revenue Regional PassengerRevenueRegional	6408000000	USD
CY2014	us-gaap	Passenger Revenue Regional PassengerRevenueRegional	6266000000	USD
CY2012	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	1196000000	USD
CY2013	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	2117000000	USD
CY2014	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	1662000000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	55000000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-14000000	USD
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-48000000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	250000000	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1100000000	USD
CY2012	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2013	us-gaap	Payments Of Dividends PaymentsOfDividends	102000000	USD
CY2014	us-gaap	Payments Of Dividends PaymentsOfDividends	251000000	USD
CY2012	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2013	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	360000000	USD
CY2014	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2012	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	958000000	USD
CY2013	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	959000000	USD
CY2014	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1795000000	USD
CY2012	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	772000000	USD
CY2013	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	451000000	USD
CY2014	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	587000000	USD
CY2012	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1968000000	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2568000000	USD
CY2014	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2249000000	USD
CY2012	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-208000000	USD
CY2013	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-624000000	USD
CY2014	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-723000000	USD
CY2013Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	12392000000	USD
CY2014Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	15138000000	USD
CY2014Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	500000000	shares
CY2013Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	852000000	USD
CY2014Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	733000000	USD
CY2013Q4	us-gaap	Price Risk Derivatives At Fair Value Net PriceRiskDerivativesAtFairValueNet	314000000	USD
CY2014Q4	us-gaap	Price Risk Derivatives At Fair Value Net PriceRiskDerivativesAtFairValueNet	-1848000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1965000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	268000000	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1020000000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	144000000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	225000000	USD
CY2014	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	19000000	USD
CY2012	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	1019000000	USD
CY2013	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	1117000000	USD
CY2014	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	1533000000	USD
CY2012	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	1566000000	USD
CY2013	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	1665000000	USD
CY2014	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	1749000000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21854000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	21929000000	USD
CY2013Q1	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	-78000000	USD
CY2013Q2	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	-159000000	USD
CY2013Q3	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	157000000	USD
CY2013Q4	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	7921000000	USD
CY2014Q1	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	-109000000	USD
CY2014Q2	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	-140000000	USD
CY2014Q3	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	-1058000000	USD
CY2014Q4	us-gaap	Quarterly Financial Information Quarterly Charges And Credits Amount Affecting Comparability QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountAffectingComparability	-2157000000	USD
CY2013Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1609000000	USD
CY2014Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	2297000000	USD
CY2012	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2864000000	USD
CY2013	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1461000000	USD
CY2014	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2928000000	USD
CY2012	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	184000000	USD
CY2013	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	285000000	USD
CY2014	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	758000000	USD
CY2012	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	452000000	USD
CY2013	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	402000000	USD
CY2014	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	716000000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3049000000	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3456000000	USD
CY2012	us-gaap	Revenues Revenues	36670000000	USD
CY2013Q1	us-gaap	Revenues Revenues	8500000000	USD
CY2013Q2	us-gaap	Revenues Revenues	9707000000	USD
CY2013Q3	us-gaap	Revenues Revenues	10490000000	USD
CY2013Q4	us-gaap	Revenues Revenues	9076000000	USD
CY2013	us-gaap	Revenues Revenues	37773000000	USD
CY2014Q1	us-gaap	Revenues Revenues	8916000000	USD
CY2014Q2	us-gaap	Revenues Revenues	10621000000	USD
CY2014Q3	us-gaap	Revenues Revenues	11178000000	USD
CY2014Q4	us-gaap	Revenues Revenues	9647000000	USD
CY2014	us-gaap	Revenues Revenues	40362000000	USD
CY2013Q4	us-gaap	Secured Debt SecuredDebt	11074000000	USD
CY2014Q4	us-gaap	Secured Debt SecuredDebt	9316000000	USD
CY2012	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	1590000000	USD
CY2013	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	1603000000	USD
CY2014	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	1700000000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	54000000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	90000000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	81000000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	5000000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	157000000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	6000000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	12.88
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7000000	shares
CY2013Q4	us-gaap	Short Term Investments ShortTermInvestments	959000000	USD
CY2014Q4	us-gaap	Short Term Investments ShortTermInvestments	1217000000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	51000000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	66000000	USD
CY2014	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	26000000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	16000000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	73000000	USD
CY2014	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	18000000	USD
CY2013	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	10000000	shares
CY2014	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	29000000	shares
CY2013	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	250000000	USD
CY2014	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1100000000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	-1396000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	-2131000000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	11643000000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	8813000000	USD
CY2013	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	14.31
CY2014	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	15.82
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	18041848	shares
CY2014Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	19790077	shares
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	258000000	USD
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	313000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37000000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	40000000	USD
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	850000000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	858000000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	845000000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	845000000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	849000000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	836000000	shares
CY2014	us-gaap	Advertising Cost Policy Expensed Advertising Cost AdvertisingCostPolicyExpensedAdvertisingCost	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Advertising Costs</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We expense advertising costs as other selling expenses in the year incurred. Advertising expense was approximately </font><font style="font-family:inherit;font-size:10pt;">$200 million</font><font style="font-family:inherit;font-size:10pt;"> for the years ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2014</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2013</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2012</font><font style="font-family:inherit;font-size:10pt;">, respectively.</font></div></div>
CY2014	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">We record impairment losses on flight equipment and other long-lived assets used in operations when events and circumstances indicate the assets may be impaired and the estimated future cash flows generated by those assets are less than their carrying amounts. Factors which could cause impairment include, but are not limited to, (1) a decision to permanently remove flight equipment or other long-lived assets from operations, (2) significant changes in the estimated useful life, (3) significant changes in projected cash flows, (4) permanent and significant declines in fleet fair values and (5) changes to the regulatory environment. For long-lived assets held for sale, we discontinue depreciation and record impairment losses when the carrying amount of these assets is greater than the fair value less the cost to sell.</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">To determine whether impairments exist for aircraft used in operations, we group assets at the fleet-type level (the lowest level for which there are identifiable cash flows) and then estimate future cash flows based on projections of capacity, passenger mile yield, fuel costs, labor costs and other relevant factors. If an impairment occurs, the impairment loss recognized is the amount by which the fleet's carrying amount exceeds its estimated fair value. We estimate aircraft fair values using published sources, appraisals and bids received from third parties, as available.</font><font style="font-family:inherit;font-size:10pt;"> </font></div></div>
CY2014	us-gaap	Revenue Recognition Deferred Revenue RevenueRecognitionDeferredRevenue	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Passenger Ticket Sales Earning Mileage Credits. </font><font style="font-family:inherit;font-size:10pt;color:#000000;font-style:normal;text-decoration:none;">Passenger ticket sales earning mileage credits under our SkyMiles Program provide customers with two deliverables: (1) mileage credits earned and (2) air transportation.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;font-style:normal;text-decoration:none;">We value each deliverable on a standalone basis. Our estimate of the selling price of a mileage credit is based on an analysis of our sales of mileage credits to other airlines and customers, which is re-evaluated at least annually. We use established ticket prices to determine the estimated selling price of air transportation. We allocate the total amount collected from passenger ticket sales between the deliverables based on their relative selling prices.</font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">We defer revenue for the mileage credits related to passenger ticket sales and recognize it as passenger revenue when miles are redeemed and services are provided. We record the air transportation portion of the passenger ticket sales in air traffic liability and recognize these amounts in passenger revenue when we provide transportation or when the ticket expires unused.</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Sale of Mileage Credits.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">Customers may earn mileage credits through participating companies such as credit card companies, hotels and car rental agencies with which we have marketing agreements to sell mileage credits. Our contracts to sell mileage credits under these marketing agreements have multiple deliverables, as defined below.</font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our most significant contract to sell mileage credits relates to our co-brand credit card relationship with American Express. Our agreements with American Express provide for joint marketing, grant certain benefits to Delta-American Express co-branded credit card holders ("Cardholders") and American Express Membership Rewards Program participants and allow American Express to market using our customer database. Cardholders earn mileage credits for making purchases using co-branded cards, may check their first bag for free, are granted access to Delta SkyClub lounges and receive other benefits while traveling on Delta. These benefits that we provide in the form of separate products and services under the SkyMiles agreements are referred to as "deliverables." Additionally, participants in the American Express Membership Rewards program may exchange their points for mileage credits under the SkyMiles Program. As a result, we sell mileage credits at agreed upon rates to American Express for provision to their customers under the co-brand credit card program and the Membership Rewards program.</font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In December 2014, we amended our marketing agreements with American Express which increased the value we will receive under the agreements and extended the term to 2022. The amended agreements became effective January 1, 2015. The deliverables under the amended agreements are substantially similar to the previous agreement. We will account for the amended agreements consistent with the accounting method adopted in September 2013 that allocates the consideration received to the individual products and services delivered based on their relative selling prices. The increased value received under the amended agreements will increase the amount of deferred revenue for the travel component and increase the value of the other deliverables, which are recognized in other revenue as they are provided.</font></div><div style="line-height:120%;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In September 2013, we modified our marketing agreements with American Express that required us to change the accounting method for recording SkyMiles sold. Under the previous method, the embedded premium or discount was allocated to the residual products or services in a combined transaction. The new method allocates consideration received based on the relative selling price of each product or service. </font><font style="font-family:inherit;font-size:10pt;">We determined our best estimate of the selling prices by considering discounted cash flow analysis using multiple inputs and assumptions, including: (1) the expected number of miles awarded and number of miles redeemed, (2) the rate at which we sell mileage credits to other airlines, (3) published rates on our website for baggage fees, access to Delta Sky Club lounges and other benefits while traveling on Delta and (4) brand value. The impact of adopting the relative selling price method re-allocated a portion of the embedded discount to the travel component, lowering the deferral rate we use to record miles sold under the agreements and increasing revenue recognized on the remaining deliverables.</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We recognize revenue as we deliver each sales element. We defer the travel deliverable (miles) as part of frequent flyer deferred revenue and recognize passenger revenue as the mileage credits are used for travel. The revenue allocated to the remaining deliverables is recorded in other revenue. We recognize the revenue for these services as they are performed.</font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Breakage. </font><font style="font-family:inherit;font-size:10pt;color:#000000;font-style:normal;text-decoration:none;">For mileage credits that we estimate are not likely to be redeemed (“breakage”), we recognize the associated value proportionally during the period in which the remaining mileage credits are expected to be redeemed. Management uses statistical models to estimate breakage based on historical redemption patterns. A change in assumptions as to the period over which mileage credits are expected to be redeemed, the actual redemption activity for mileage credits or the estimated fair value of mileage credits expected to be redeemed could have a material impact on our revenue in the year in which the change occurs and in future years.</font><font style="font-family:inherit;font-size:10pt;font-style:italic;"> </font></div></div>
CY2014	us-gaap	Revenue Recognition Loyalty Programs RevenueRecognitionLoyaltyPrograms	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Frequent Flyer Program</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our frequent flyer program (the “SkyMiles Program”) </font><font style="font-family:inherit;font-size:10pt;">offers incentives to travel on Delta. This program allows customers to earn mileage credits by flying on Delta, regional air carriers with which we have contract carrier agreements </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">and airlines that participate in the SkyMiles Program, as well as through participating companies such as credit card companies, hotels and car rental agencies. We sell mileage credits to non-airline businesses, customers and other airlines. </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Effective January 1, 2015, the SkyMiles program was modified from a model in which customers earn redeemable mileage credits based on distance traveled to a model based on ticket price. This award change did not affect the way we account for the program.</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">The SkyMiles Program includes two types of transactions that are considered revenue arrangements with multiple deliverables. As discussed below, these are (1) passenger ticket sales earning mileage credits and (2) the sale of mileage credits to participating companies with which we have marketing agreements. Mileage credits are a separate unit of accounting as they can be redeemed by customers in future periods for air travel on Delta and participating airlines, membership in our Sky Club and other program awards.</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Passenger Ticket Sales Earning Mileage Credits. </font><font style="font-family:inherit;font-size:10pt;color:#000000;font-style:normal;text-decoration:none;">Passenger ticket sales earning mileage credits under our SkyMiles Program provide customers with two deliverables: (1) mileage credits earned and (2) air transportation.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;font-style:normal;text-decoration:none;">We value each deliverable on a standalone basis. Our estimate of the selling price of a mileage credit is based on an analysis of our sales of mileage credits to other airlines and customers, which is re-evaluated at least annually. We use established ticket prices to determine the estimated selling price of air transportation. We allocate the total amount collected from passenger ticket sales between the deliverables based on their relative selling prices.</font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">We defer revenue for the mileage credits related to passenger ticket sales and recognize it as passenger revenue when miles are redeemed and services are provided. We record the air transportation portion of the passenger ticket sales in air traffic liability and recognize these amounts in passenger revenue when we provide transportation or when the ticket expires unused.</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Sale of Mileage Credits.</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;">Customers may earn mileage credits through participating companies such as credit card companies, hotels and car rental agencies with which we have marketing agreements to sell mileage credits. Our contracts to sell mileage credits under these marketing agreements have multiple deliverables, as defined below.</font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our most significant contract to sell mileage credits relates to our co-brand credit card relationship with American Express. Our agreements with American Express provide for joint marketing, grant certain benefits to Delta-American Express co-branded credit card holders ("Cardholders") and American Express Membership Rewards Program participants and allow American Express to market using our customer database. Cardholders earn mileage credits for making purchases using co-branded cards, may check their first bag for free, are granted access to Delta SkyClub lounges and receive other benefits while traveling on Delta. These benefits that we provide in the form of separate products and services under the SkyMiles agreements are referred to as "deliverables." Additionally, participants in the American Express Membership Rewards program may exchange their points for mileage credits under the SkyMiles Program. As a result, we sell mileage credits at agreed upon rates to American Express for provision to their customers under the co-brand credit card program and the Membership Rewards program.</font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In December 2014, we amended our marketing agreements with American Express which increased the value we will receive under the agreements and extended the term to 2022. The amended agreements became effective January 1, 2015. The deliverables under the amended agreements are substantially similar to the previous agreement. We will account for the amended agreements consistent with the accounting method adopted in September 2013 that allocates the consideration received to the individual products and services delivered based on their relative selling prices. The increased value received under the amended agreements will increase the amount of deferred revenue for the travel component and increase the value of the other deliverables, which are recognized in other revenue as they are provided.</font></div><div style="line-height:120%;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In September 2013, we modified our marketing agreements with American Express that required us to change the accounting method for recording SkyMiles sold. Under the previous method, the embedded premium or discount was allocated to the residual products or services in a combined transaction. The new method allocates consideration received based on the relative selling price of each product or service. </font><font style="font-family:inherit;font-size:10pt;">We determined our best estimate of the selling prices by considering discounted cash flow analysis using multiple inputs and assumptions, including: (1) the expected number of miles awarded and number of miles redeemed, (2) the rate at which we sell mileage credits to other airlines, (3) published rates on our website for baggage fees, access to Delta Sky Club lounges and other benefits while traveling on Delta and (4) brand value. The impact of adopting the relative selling price method re-allocated a portion of the embedded discount to the travel component, lowering the deferral rate we use to record miles sold under the agreements and increasing revenue recognized on the remaining deliverables.</font><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We recognize revenue as we deliver each sales element. We defer the travel deliverable (miles) as part of frequent flyer deferred revenue and recognize passenger revenue as the mileage credits are used for travel. The revenue allocated to the remaining deliverables is recorded in other revenue. We recognize the revenue for these services as they are performed.</font></div><div style="line-height:120%;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Breakage. </font><font style="font-family:inherit;font-size:10pt;color:#000000;font-style:normal;text-decoration:none;">For mileage credits that we estimate are not likely to be redeemed (“breakage”), we recognize the associated value proportionally during the period in which the remaining mileage credits are expected to be redeemed. Management uses statistical models to estimate breakage based on historical redemption patterns. A change in assumptions as to the period over which mileage credits are expected to be redeemed, the actual redemption activity for mileage credits or the estimated fair value of mileage credits expected to be redeemed could have a material impact on our revenue in the year in which the change occurs and in future years.</font><font style="font-family:inherit;font-size:10pt;font-style:italic;"></font></div></div>
CY2014	us-gaap	Revenue Recognition Sales Of Services RevenueRecognitionSalesOfServices	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Passenger Tickets</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We record sales of passenger tickets in air traffic liability. Passenger revenue is recognized when we provide transportation or when the ticket expires unused, reducing the related air traffic liability. We periodically evaluate the estimated air traffic liability and record any adjustments in our Consolidated Statements of Operations. These adjustments relate primarily to refunds, exchanges, transactions with other airlines and other items for which final settlement occurs in periods subsequent to the sale of the related tickets at amounts other than the original sales price.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></div>
CY2014	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We are required to make estimates and assumptions when preparing our Consolidated Financial Statements in accordance with GAAP. These estimates and assumptions affect the amounts reported in our Consolidated Financial Statements and the accompanying notes. Actual results could differ materially from those estimates.</font></div></div>

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$DAL
DELTA AIR LINES, INC. Stock $dal

2014 Form 10-K Financial Statement

#000002790415000003 Filed on February 11, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL DELTA AIR LINES, INC. Stock $dal

2014 Form 10-K Financial Statement

#000002790415000003 Filed on February 11, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL
DELTA AIR LINES, INC. Stock $dal