$DAL
DELTA AIR LINES, INC. Stock $dal

$dal Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000002790422000003 Filed on February 11, 2022

Income Statement

Concept	2021	2020 Q4	2020
Revenue	$29.90B	$3.973B	$17.10B
YoY Change	74.9%	-65.27%	-63.63%
Cost Of Revenue	$18.35B	$3.019B	$12.48B
YoY Change	47.05%	-40.85%	-40.95%
Gross Profit	$11.55B	$954.0M	$4.615B
YoY Change	150.21%	-84.94%	-82.16%
Gross Profit Margin	38.62%	24.01%	27.0%
Selling, General & Admin	$10.79B	$2.024B	$9.336B
YoY Change	15.56%	-47.08%	-37.18%
% of Gross Profit	93.44%	212.16%	202.3%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.998B	$499.0M	$2.312B
YoY Change	-13.58%	-19.65%	-10.42%
% of Gross Profit	17.3%	52.31%	50.1%
Operating Expenses	$14.19B	$2.742B	$12.81B
YoY Change	10.78%	-44.04%	-33.32%
Operating Profit	$1.886B	-$1.788B	-$12.47B
YoY Change	-115.13%	-227.81%	-288.41%
Interest Expense	-$1.560B	-$271.0M	-$3.466B
YoY Change	-54.99%	-1103.7%	1454.26%
% of Operating Profit	-82.71%
Other Income/Expense, Net	-$1.488B	$21.00M	-$3.118B
YoY Change	-52.28%	-132.81%	642.38%
Pretax Income	$398.0M	-$1.108B	-$15.59B
YoY Change	-102.55%	-179.26%	-351.48%
Income Tax	$118.0M	-$353.0M	-$3.202B
% Of Pretax Income	29.65%
Net Earnings	$280.0M	-$755.0M	-$12.39B
YoY Change	-102.26%	-168.7%	-359.81%
Net Earnings / Revenue	0.94%	-19.0%	-72.45%
Basic Earnings Per Share	$0.44		-$19.49
Diluted Earnings Per Share	$0.44	-$1.187M	-$19.49
COMMON SHARES
Basic Shares Outstanding	636.0M shares		636.0M shares
Diluted Shares Outstanding	641.0M shares		636.0M shares

Balance Sheet

Concept	2021	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$11.32B	$14.10B	$14.10B
YoY Change	-19.7%	389.1%	389.1%
Cash & Equivalents	$7.933B	$8.307B	$8.307B
Short-Term Investments	$3.386B	$5.789B	$5.789B
Other Short-Term Assets	$1.119B	$1.180B	$1.180B
YoY Change	-5.17%	-6.5%	-6.5%
Inventory	$1.098B	$732.0M	$732.0M
Prepaid Expenses
Receivables	$2.404B	$1.396B	$1.396B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$15.94B	$17.40B	$17.40B
YoY Change	-8.41%	110.98%	110.98%
LONG-TERM ASSETS
Property, Plant & Equipment	$35.99B	$32.26B	$32.26B
YoY Change	11.54%	-12.66%	-12.66%
Goodwill		$9.753B
YoY Change		-0.29%
Intangibles		$6.011B
YoY Change		16.42%
Long-Term Investments	$1.712B	$1.665B	$1.665B
YoY Change	2.82%
Other Assets	$3.067B	$1.357B	$4.901B
YoY Change	-37.42%	25.88%	11.34%
Total Long-Term Assets	$56.52B	$54.59B	$54.59B
YoY Change	3.53%	-3.0%	-3.0%
TOTAL ASSETS
Total Short-Term Assets	$15.94B	$17.40B	$17.40B
Total Long-Term Assets	$56.52B	$54.59B	$54.59B
Total Assets	$72.46B	$72.00B	$72.00B
YoY Change	0.64%	11.57%	11.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$4.240B	$2.840B	$2.840B
YoY Change	49.3%	-13.04%	-13.04%
Accrued Expenses	$4.906B	$4.434B	$4.434B
YoY Change	10.65%	-20.27%	-20.27%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.782B	$1.443B	$1.732B
YoY Change	2.89%	-29.75%	-24.27%
Total Short-Term Liabilities	$20.97B	$15.93B	$15.93B
YoY Change	31.64%	-21.17%	-21.17%
LONG-TERM LIABILITIES
Long-Term Debt	$25.14B	$26.53B	$27.43B
YoY Change	-8.34%	229.5%	209.08%
Other Long-Term Liabilities	$22.47B	$4.862B	$27.11B
YoY Change	-17.12%	250.79%	45.43%
Total Long-Term Liabilities	$47.61B	$54.54B	$54.54B
YoY Change	-12.71%	88.25%	98.21%
TOTAL LIABILITIES
Total Short-Term Liabilities	$20.97B	$15.93B	$15.93B
Total Long-Term Liabilities	$47.61B	$54.54B	$54.54B
Total Liabilities	$68.57B	$70.46B	$70.46B
YoY Change	-2.68%	43.29%	43.29%
SHAREHOLDERS EQUITY
Retained Earnings		-$428.0M
YoY Change		-103.44%
Common Stock		$11.26B
YoY Change		1.17%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$259.0M
YoY Change		9.75%
Treasury Stock Shares		9.170M shares
Shareholders Equity	$3.887B	$1.534B	$1.534B
YoY Change
Total Liabilities & Shareholders Equity	$72.46B	$72.00B	$72.00B
YoY Change	0.64%	11.57%	11.57%

Cashflow Statement

Concept	2021	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$280.0M	-$755.0M	-$12.39B
YoY Change	-102.26%	-168.7%	-359.81%
Depreciation, Depletion And Amortization	$1.998B	$499.0M	$2.312B
YoY Change	-13.58%	-19.65%	-10.42%
Cash From Operating Activities	$3.264B	-$1.286B	-$3.793B
YoY Change	-186.05%	-232.58%	-145.02%
INVESTING ACTIVITIES
Capital Expenditures	-$3.247B	-$548.0M	-$1.899B
YoY Change	70.98%	-48.88%	-61.53%
Acquisitions
YoY Change
Other Investing Activities	$32.00M	-$500.0M	-$87.00M
YoY Change	-136.78%	-271.23%	50.0%
Cash From Investing Activities	-$898.0M	-$1.048B	-$9.238B
YoY Change	-90.28%	34.36%	102.45%
FINANCING ACTIVITIES
Cash Dividend Paid	$0.00		$260.0M
YoY Change	-100.0%		-73.47%
Common Stock Issuance & Retirement, Net	$0.00		$344.0M
YoY Change	-100.0%		-83.03%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$3.852B	-5.957B	$19.36B
YoY Change	-119.9%	-807.48%	-772.08%
NET CHANGE
Cash From Operating Activities	$3.264B	-1.286B	-$3.793B
Cash From Investing Activities	-$898.0M	-1.048B	-$9.238B
Cash From Financing Activities	-$3.852B	-5.957B	$19.36B
Net Change In Cash	-$1.486B	-8.291B	$6.325B
YoY Change	-123.49%	-903.39%	544.09%
FREE CASH FLOW
Cash From Operating Activities	$3.264B	-$1.286B	-$3.793B
Capital Expenditures	-$3.247B	-$548.0M	-$1.899B
Free Cash Flow	$6.511B	-$738.0M	-$1.894B
YoY Change	-443.77%	-136.14%	-114.18%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000027904
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dal	Mileage Credit Marketing Agreement Duration Minimum MileageCreditMarketingAgreementDurationMinimum	P3Y
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CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligationsCurrent
CY2020Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligationsCurrent
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligations
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligations
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-5424
CY2021	dei	Entity Registrant Name EntityRegistrantName	DELTA AIR LINES, INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	58-0218548
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	Post Office Box 20706
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Atlanta
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	GA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	30320-6001
CY2021	dei	City Area Code CityAreaCode	404
CY2021	dei	Local Phone Number LocalPhoneNumber	715-2600
CY2021	dei	Security12b Title Security12bTitle	Common Stock, par value $0.0001 per share
CY2021	dei	Trading Symbol TradingSymbol	DAL
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2021	dei	Auditor Firm AuditorFirmId	42
CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	Atlanta, Georgia
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CY2019	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	2211000000	USD
CY2021	us-gaap	Cost Of Services Catering CostOfServicesCatering	756000000	USD
CY2020	us-gaap	Cost Of Services Catering CostOfServicesCatering	551000000	USD
CY2019	us-gaap	Cost Of Services Catering CostOfServicesCatering	1312000000	USD
CY2021	us-gaap	Aircraft Rental AircraftRental	430000000	USD
CY2020	us-gaap	Aircraft Rental AircraftRental	399000000	USD
CY2019	us-gaap	Aircraft Rental AircraftRental	423000000	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	-19000000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	8219000000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2021	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	108000000	USD
CY2020	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	0	USD
CY2019	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1643000000	USD
CY2021	dal	Grants Recognized Government Grants GrantsRecognizedGovernmentGrants	4512000000	USD
CY2020	dal	Grants Recognized Government Grants GrantsRecognizedGovernmentGrants	3946000000	USD
CY2019	dal	Grants Recognized Government Grants GrantsRecognizedGovernmentGrants	0	USD
CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1405000000	USD
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1232000000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1827000000	USD
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	28013000000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	29564000000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	40389000000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1886000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-12469000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	6618000000	USD
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-1279000000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-929000000	USD
CY2021	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-337000000	USD
CY2020	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-2432000000	USD
CY2019	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-62000000	USD
CY2021	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	56000000	USD
CY2020	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-105000000	USD
CY2019	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	119000000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-319000000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-8000000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2021	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-451000000	USD
CY2020	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-219000000	USD
CY2019	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	65000000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-60000000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	137000000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-111000000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1488000000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-3118000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-420000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	398000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-15587000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6198000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	118000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3202000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1431000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	280000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-12385000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-19.49
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.32
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-19.49
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.30
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.51
CY2021	us-gaap	Net Income Loss NetIncomeLoss	280000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-12385000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-66000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	6000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1908000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	983000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	170000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1908000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1049000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-164000000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2188000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-13434000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4603000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	280000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-12385000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2021	us-gaap	Other Restructuring Costs OtherRestructuringCosts	5000000	USD
CY2020	us-gaap	Other Restructuring Costs OtherRestructuringCosts	4111000000	USD
CY2019	us-gaap	Other Restructuring Costs OtherRestructuringCosts	0	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1998000000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2312000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2581000000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	115000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3110000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1473000000	USD
CY2021	dal	Noncash Effect Of Pension Postretirement And Postemployment Payments Greater Less Than Expense NoncashEffectOfPensionPostretirementAndPostemploymentPaymentsGreaterLessThanExpense	2038000000	USD
CY2020	dal	Noncash Effect Of Pension Postretirement And Postemployment Payments Greater Less Than Expense NoncashEffectOfPensionPostretirementAndPostemploymentPaymentsGreaterLessThanExpense	-898000000	USD
CY2019	dal	Noncash Effect Of Pension Postretirement And Postemployment Payments Greater Less Than Expense NoncashEffectOfPensionPostretirementAndPostemploymentPaymentsGreaterLessThanExpense	922000000	USD
CY2021	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-337000000	USD
CY2020	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-2432000000	USD
CY2019	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-62000000	USD
CY2021	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	981000000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-1168000000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	775000000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	318000000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-354000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	139000000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	76000000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-210000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-111000000	USD
CY2021	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	108000000	USD
CY2020	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	-1650000000	USD
CY2019	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	354000000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1986000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	240000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	144000000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-399000000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	1185000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-16000000	USD
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	57000000	USD
CY2020	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	559000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	244000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3264000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-3793000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8425000000	USD
CY2021	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	1596000000	USD
CY2020	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	896000000	USD
CY2019	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	3344000000	USD
CY2019	dal	Sale Leaseback Cash Proceeds Financing SaleLeasebackCashProceedsFinancing	0	USD
CY2021	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	1651000000	USD
CY2020	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	1003000000	USD
CY2019	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	1592000000	USD
CY2021	dal	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	0	USD
CY2020	dal	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	465000000	USD
CY2019	dal	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	0	USD
CY2021	us-gaap	Payments To Acquire Longterm Investments PaymentsToAcquireLongtermInvestments	0	USD
CY2020	us-gaap	Payments To Acquire Longterm Investments PaymentsToAcquireLongtermInvestments	2099000000	USD
CY2019	us-gaap	Payments To Acquire Longterm Investments PaymentsToAcquireLongtermInvestments	170000000	USD
CY2021	us-gaap	Proceeds From Sale Of Longterm Investments ProceedsFromSaleOfLongtermInvestments	0	USD
CY2020	us-gaap	Proceeds From Sale Of Longterm Investments ProceedsFromSaleOfLongtermInvestments	0	USD
CY2019	us-gaap	Proceeds From Sale Of Longterm Investments ProceedsFromSaleOfLongtermInvestments	279000000	USD
CY2021	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	12655000000	USD
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	13400000000	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2021	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	15036000000	USD
CY2020	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	7608000000	USD
CY2019	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	206000000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	32000000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-87000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-58000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-898000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-9238000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4563000000	USD
CY2021	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2020	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	3261000000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	1750000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1902000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	22790000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2057000000	USD
CY2021	dal	Sale Leaseback Cash Proceeds Financing SaleLeasebackCashProceedsFinancing	0	USD
CY2020	dal	Sale Leaseback Cash Proceeds Financing SaleLeasebackCashProceedsFinancing	2306000000	USD
CY2021	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	5834000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	8559000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	3320000000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	344000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2027000000	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	260000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	980000000	USD
CY2021	dal	Proceeds From Purchasing Card ProceedsFromPurchasingCard	0	USD
CY2020	dal	Proceeds From Purchasing Card ProceedsFromPurchasingCard	364000000	USD
CY2019	dal	Repayments Of Purchasing Card RepaymentsOfPurchasingCard	339000000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	80000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-202000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-21000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-3852000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	19356000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2880000000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1486000000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	6325000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	982000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10055000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3730000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2748000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8569000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10055000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3730000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	1506000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	761000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	481000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2113000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1077000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	464000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1049000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	381000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	650000000	USD
CY2021	dal	Other Noncash Financings OtherNoncashFinancings	0	USD
CY2020	dal	Other Noncash Financings OtherNoncashFinancings	280000000	USD
CY2019	dal	Other Noncash Financings OtherNoncashFinancings	0	USD
CY2021	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	42000000	USD
CY2020	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	0	USD
CY2019	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	190000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	13687000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2019	us-gaap	Dividends Dividends	981000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-164000000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	76000000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2027000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	15358000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-12385000000	USD
CY2020	us-gaap	Dividends Dividends	257000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1049000000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	97000000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	344000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	114000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1534000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	280000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1908000000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	79000000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	86000000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3887000000	USD
CY2021	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	38.87
CY2020	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	52.17
CY2019	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	50.20
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div><span><br/></span></div><div style="text-indent:13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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.</span></div>
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	7933000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8307000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2882000000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	163000000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	192000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	212000000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	473000000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1556000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	636000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8569000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10055000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3730000000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	17000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	1000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	18671000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	17511000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	28749000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	26529000000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2000000000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2300000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2600000000	USD
CY2021	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	301000000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	304000000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	239000000	USD
CY2021Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	876000000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	1000000000	USD
CY2021	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	We review flight equipment, ROU assets and other long-lived assets used in operations for impairment losses when events and circumstances indicate the assets may be impaired. Factors which could be indicators of 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. To determine whether impairments exist for aircraft used in operations, we group assets at the fleet type level or at the contract level for aircraft operated by third-party regional carriers (i.e., 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 and labor costs and other relevant factors. If an asset group is impaired, the impairment loss recognized is the amount by which the asset group'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. Due to the impacts of the COVID-19 pandemic, we evaluated our fleet during 2020 and determined that only the fleet types discussed in Note 15, "Restructuring," were impaired, as the future cash flows from the operation of other fleet types through the respective retirement dates exceeded the carrying value. Due to the recovery in demand that we have experienced throughout 2021, we decided not to retire any additional aircraft and returned to service a majority of the aircraft that were temporarily parked in 2020. We recorded no further impairments during 2021. As we gained updated information during the year, we updated estimates to the 2020 fleet-related impairment charges and recorded adjustments of $19 million to certain of the restructuring charges during 2021.
CY2021	us-gaap	Restructuring Charges RestructuringCharges	-19000000	USD
CY2021Q4	us-gaap	Short Term Non Bank Loans And Notes Payable ShortTermNonBankLoansAndNotesPayable	1100000000	USD
CY2020Q4	us-gaap	Short Term Non Bank Loans And Notes Payable ShortTermNonBankLoansAndNotesPayable	1100000000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	198000000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	119000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	288000000	USD
CY2021	dal	Carbon Offset Credit Expense CarbonOffsetCreditExpense	95000000	USD
CY2021	dal	Carbon Offset Credit Expense Emissions Generated In Prior Year CarbonOffsetCreditExpenseEmissionsGeneratedInPriorYear	30000000	USD
CY2021	dal	Carbon Emissions Generated Offset Prior Year CarbonEmissionsGeneratedOffsetPriorYear	13000000	t
CY2021	dal	Carbon Offset Credit Expense Emissions Generated In Current Year CarbonOffsetCreditExpenseEmissionsGeneratedInCurrentYear	65000000	USD
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	2200000000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3100000000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3800000000	USD
CY2021	dal	Contract With Customer Liability Refund To Customer ContractWithCustomerLiabilityRefundToCustomer	1100000000	USD
CY2020	dal	Contract With Customer Liability Refund To Customer ContractWithCustomerLiabilityRefundToCustomer	3100000000	USD
CY2021Q4	dal	Contract With Customer Liability Travel Credits As Percentage Of Total Liability ContractWithCustomerLiabilityTravelCreditsAsPercentageOfTotalLiability	0.45
CY2020Q4	dal	Contract With Customer Liability Travel Credits As Percentage Of Total Liability ContractWithCustomerLiabilityTravelCreditsAsPercentageOfTotalLiability	0.65
CY2021	dal	Mileage Credit Marketing Agreement Duration Maximum MileageCreditMarketingAgreementDurationMaximum	P11Y
CY2021	dal	Sales Of Mileage Credits SalesOfMileageCredits	4100000000	USD
CY2020	dal	Sales Of Mileage Credits SalesOfMileageCredits	2900000000	USD
CY2019	dal	Sales Of Mileage Credits SalesOfMileageCredits	4200000000	USD
CY2021	dal	Loyalty Program Liability Mileage Credits Earned LoyaltyProgramLiabilityMileageCreditsEarned	2238000000	USD
CY2020	dal	Loyalty Program Liability Mileage Credits Earned LoyaltyProgramLiabilityMileageCreditsEarned	1437000000	USD
CY2019	dal	Loyalty Program Liability Mileage Credits Earned LoyaltyProgramLiabilityMileageCreditsEarned	3156000000	USD
CY2021	dal	Loyalty Program Liability Travel Mileage Credits Redeemed LoyaltyProgramLiabilityTravelMileageCreditsRedeemed	1786000000	USD
CY2020	dal	Loyalty Program Liability Travel Mileage Credits Redeemed LoyaltyProgramLiabilityTravelMileageCreditsRedeemed	935000000	USD
CY2019	dal	Loyalty Program Liability Travel Mileage Credits Redeemed LoyaltyProgramLiabilityTravelMileageCreditsRedeemed	2900000000	USD
CY2021	dal	Loyalty Program Liability Non Travel Mileage Credits Redeemed LoyaltyProgramLiabilityNonTravelMileageCreditsRedeemed	75000000	USD
CY2020	dal	Loyalty Program Liability Non Travel Mileage Credits Redeemed LoyaltyProgramLiabilityNonTravelMileageCreditsRedeemed	48000000	USD
CY2019	dal	Loyalty Program Liability Non Travel Mileage Credits Redeemed LoyaltyProgramLiabilityNonTravelMileageCreditsRedeemed	169000000	USD
CY2021	dal	Mileage Credit Redemption Majority Of New Miles Redemption Period MileageCreditRedemptionMajorityOfNewMilesRedemptionPeriod	P2Y
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	29899000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	17095000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47007000000	USD
CY2021Q4	us-gaap	Short Term Investments ShortTermInvestments	3400000000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	2800000000	USD
CY2021Q4	dal	Equity Securities And Equity Method Investments EquitySecuritiesAndEquityMethodInvestments	1712000000	USD
CY2020Q4	dal	Equity Securities And Equity Method Investments EquitySecuritiesAndEquityMethodInvestments	1665000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	9753000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	9753000000	USD
CY2021Q4	dal	Indefinite Lived Intangible Assets And Goodwill IndefiniteLivedIntangibleAssetsAndGoodwill	15671000000	USD
CY2020Q4	dal	Indefinite Lived Intangible Assets And Goodwill IndefiniteLivedIntangibleAssetsAndGoodwill	15671000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	893000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	883000000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	9000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	9000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	9000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9000000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	25292000000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	28214000000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	208000000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	240000000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	25084000000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	27974000000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1502000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1443000000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	23582000000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	26531000000	USD
CY2021Q3	dal	Debt Instrument Aggregate Purchase Offer For Extinguishment Of Debt DebtInstrumentAggregatePurchaseOfferForExtinguishmentOfDebt	1000000000	USD
CY2021Q4	dal	Letters Of Credit Outstanding That Do Not Reduce Availability Under Revolving Facilities Amount LettersOfCreditOutstandingThatDoNotReduceAvailabilityUnderRevolvingFacilitiesAmount	300000000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	25084000000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	27974000000	USD
CY2021Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	26900000000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	29800000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1483000000	USD
CY2021Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year One DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne	54000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	2516000000	USD
CY2021Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Two DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo	60000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	3094000000	USD
CY2021Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Three DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree	61000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	4215000000	USD
CY2021Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Four DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour	39000000	USD
CY2021Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Five DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFive	8000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	10933000000	USD
CY2021Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net After Year Five DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFive	-14000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	3051000000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	25292000000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	208000000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	25084000000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	7237000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5733000000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1596000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1002000000	USD
CY2021Q4	dal	Lease Right Of Use Asset LeaseRightOfUseAsset	8833000000	USD
CY2020Q4	dal	Lease Right Of Use Asset LeaseRightOfUseAsset	6735000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	703000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	678000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	280000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	289000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	7056000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5713000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	1556000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	894000000	USD
CY2021Q4	dal	Lease Liability LeaseLiability	9595000000	USD
CY2020Q4	dal	Lease Liability LeaseLiability	7574000000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P13Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P6Y
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0381
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0488
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0336
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0361
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	131000000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	131000000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	110000000	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	55000000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	32000000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	29000000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	863000000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	1019000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	1013000000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	245000000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	264000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	500000000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1599000000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1406000000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1456000000	USD
CY2021	us-gaap	Lease Cost LeaseCost	2893000000	USD
CY2020	us-gaap	Lease Cost LeaseCost	2852000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	3108000000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	999000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	1053000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	1166000000	USD
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	46000000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	32000000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	27000000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	336000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	232000000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	255000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	192000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	944000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	324000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	974000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	286000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	894000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	369000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	866000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	766000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	168000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	5307000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	636000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	9751000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2015000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1992000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	179000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	7759000000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1836000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	703000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	280000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	7056000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	1556000000	USD
CY2021Q4	dal	Lessee Finance Lease And Operating Lease Lease Not Yet Commenced Amount LesseeFinanceLeaseAndOperatingLeaseLeaseNotYetCommencedAmount	403000000	USD
CY2021	dal	Unfunded Liability Defined Benefit Plan Interest Rate UnfundedLiabilityDefinedBenefitPlanInterestRate	0.0885
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	0	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	875000000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	805000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1000000000	USD
CY2021	dal	Assumed Health Care Plan Pre Age AssumedHealthCarePlanPreAge	P65Y
CY2021	dal	Assumed Health Care Plan Post Age AssumedHealthCarePlanPostAge	P65Y
CY2020	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	0	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-94000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0297
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0262
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0898
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0897
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0897
CY2021Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0625
CY2020Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0625
CY2019Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0650
CY2021Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0500
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0898
CY2021	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	108000000	USD
CY2019	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1600000000	USD
CY2021Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	83000	employee
CY2021Q4	dal	Percentage Of Employees Represented By Unions Under Collective Bargaining Agreements PercentageOfEmployeesRepresentedByUnionsUnderCollectiveBargainingAgreements	0.20
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-94000000	USD
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CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1301000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1495000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	480000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	483000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	2089000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	2956000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	314000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1929000000	USD
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CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	494000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	479000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	833000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	460000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	8585000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	9067000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4463000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4507000000	USD
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CY2020Q4	dal	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	1324000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1097000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1076000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	55000000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7291000000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7079000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1294000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1988000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1300000000	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	460000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	58000000	USD
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CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	19000000	shares
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	149000000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	119000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	161000000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	77000000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6200000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	50.41
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3300000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5400000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	52.37
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3900000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	49.57
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2500000	shares
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CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1000000.0	shares
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CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1600000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	58.89
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1400000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	50.52
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
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CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	100000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	44.05
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	200000	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	49.61
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
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CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6200000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	50.41
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5400000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	52.37
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3900000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	49.57
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-133000000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-384000000	USD
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CY2020	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-169000000	USD
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CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	484000000	USD
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CY2021	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-96000000	USD
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CY2020Q4	dal	Deferred Income Tax Expense Benefit In Accumulated Balance And Not Recognized Until Obligation Fully Extinguished DeferredIncomeTaxExpenseBenefitInAccumulatedBalanceAndNotRecognizedUntilObligationFullyExtinguished	760000000	USD
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CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	17095000000	USD
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CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2312000000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	8219000000	USD
CY2020Q4	us-gaap	Assets Assets	71996000000	USD
CY2020Q4	dal	Net Obligation Renewable Fuel Compliance Fair Value NetObligationRenewableFuelComplianceFairValue	156000000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1899000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47007000000	USD
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CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2581000000	USD
CY2019Q4	us-gaap	Assets Assets	64532000000	USD
CY2019Q4	dal	Net Obligation Renewable Fuel Compliance Fair Value NetObligationRenewableFuelComplianceFairValue	4000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4936000000	USD
CY2021Q4	dal	Obligation Renewable Fuel Compliance Liability Component Fair Value ObligationRenewableFuelComplianceLiabilityComponentFairValue	593000000	USD
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CY2020Q4	dal	Obligation Renewable Fuel Compliance Liability Component Fair Value ObligationRenewableFuelComplianceLiabilityComponentFairValue	172000000	USD
CY2020Q4	dal	Obligation Renewable Fuel Compliance Asset Component Fair Value ObligationRenewableFuelComplianceAssetComponentFairValue	16000000	USD
CY2019Q4	dal	Obligation Renewable Fuel Compliance Liability Component Fair Value ObligationRenewableFuelComplianceLiabilityComponentFairValue	58000000	USD
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CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
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$DAL
DELTA AIR LINES, INC. Stock $dal

2021 Form 10-K Financial Statement

#000002790422000003 Filed on February 11, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL DELTA AIR LINES, INC. Stock $dal

2021 Form 10-K Financial Statement

#000002790422000003 Filed on February 11, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL
DELTA AIR LINES, INC. Stock $dal