$DAL
DELTA AIR LINES, INC. Stock $dal

$dal Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000002790421000003 Filed on February 12, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2018 Q4
Revenue	$3.973B	$11.44B	$10.74B
YoY Change	-65.27%	6.49%	5.02%
Cost Of Revenue	$3.019B	$5.104B	$5.284B
YoY Change	-40.85%	-3.41%	20.5%
Gross Profit	$954.0M	$6.335B	$5.458B
YoY Change	-84.94%	16.07%	-6.59%
Gross Profit Margin	24.01%	55.38%	50.81%
Selling, General & Admin	$2.024B	$3.825B	$3.517B
YoY Change	-47.08%	8.76%	8.18%
% of Gross Profit	212.16%	60.38%	64.44%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$499.0M	$621.0M	$2.329B
YoY Change	-19.65%	-73.34%	4.82%
% of Gross Profit	52.31%	9.8%	42.67%
Operating Expenses	$2.742B	$4.900B	$4.505B
YoY Change	-44.04%	8.77%	6.93%
Operating Profit	-$1.788B	$1.399B	$1.090B
YoY Change	-227.81%	28.35%	-6.2%
Interest Expense	-$271.0M	$27.00M	$256.0M
YoY Change	-1103.7%	-89.45%	-145.07%
% of Operating Profit		1.93%	23.49%
Other Income/Expense, Net	$21.00M	-$64.00M	$136.0M
YoY Change	-132.81%	-147.06%	-815.79%
Pretax Income	-$1.108B	$1.398B	$1.345B
YoY Change	-179.26%	3.94%	28.95%
Income Tax	-$353.0M	$300.0M	$326.0M
% Of Pretax Income		21.46%	24.24%
Net Earnings	-$755.0M	$1.099B	$1.019B
YoY Change	-168.7%	7.85%	240.8%
Net Earnings / Revenue	-19.0%	9.61%	9.49%
Basic Earnings Per Share		$1.71	$1.50
Diluted Earnings Per Share	-$1.187M	$1.71	$1.49
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept	2020 Q4	2019 Q4	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$14.10B	$2.882B	$1.768B
YoY Change	389.1%	63.01%	-33.0%
Cash & Equivalents	$8.307B	$2.882B	$1.565B
Short-Term Investments	$5.789B		$203.0M
Other Short-Term Assets	$1.180B	$1.262B	$1.203B
YoY Change	-6.5%	4.9%	-17.55%
Inventory	$732.0M	$1.251B	$1.055B
Prepaid Expenses
Receivables	$1.396B	$2.854B	$2.314B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$17.40B	$8.249B	$6.340B
YoY Change	110.98%	30.11%	-18.76%
LONG-TERM ASSETS
Property, Plant & Equipment	$32.26B	$36.94B	$28.34B
YoY Change	-12.66%	30.36%	6.67%
Goodwill	$9.753B	$9.781B	$9.781B
YoY Change	-0.29%	0.0%	-0.13%
Intangibles	$6.011B	$5.163B	$4.830B
YoY Change	16.42%	6.89%	-0.35%
Long-Term Investments	$1.665B
YoY Change
Other Assets	$1.357B	$1.078B	$3.850B
YoY Change	25.88%	-72.0%	16.35%
Total Long-Term Assets	$54.59B	$56.28B	$53.93B
YoY Change	-3.0%	4.37%	17.57%
TOTAL ASSETS
Total Short-Term Assets	$17.40B	$8.249B	$6.340B
Total Long-Term Assets	$54.59B	$56.28B	$53.93B
Total Assets	$72.00B	$64.53B	$60.27B
YoY Change	11.57%	7.08%	12.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.840B	$3.266B	$2.976B
YoY Change	-13.04%	9.74%	-18.11%
Accrued Expenses	$4.434B	$5.561B	$5.337B
YoY Change	-20.27%	4.2%	27.59%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.443B	$2.054B	$1.409B
YoY Change	-29.75%	45.78%	-34.31%
Total Short-Term Liabilities	$15.93B	$20.20B	$18.58B
YoY Change	-21.17%	8.75%	-2.01%
LONG-TERM LIABILITIES
Long-Term Debt	$26.53B	$8.052B	$7.959B
YoY Change	229.5%	1.17%	26.43%
Other Long-Term Liabilities	$4.862B	$1.386B	$969.0M
YoY Change	250.79%	43.03%	-56.37%
Total Long-Term Liabilities	$54.54B	$28.97B	$28.00B
YoY Change	88.25%	3.46%	26.23%
TOTAL LIABILITIES
Total Short-Term Liabilities	$15.93B	$20.20B	$18.58B
Total Long-Term Liabilities	$54.54B	$28.97B	$28.00B
Total Liabilities	$70.46B	$49.17B	$46.58B
YoY Change	43.29%	5.57%	13.22%
SHAREHOLDERS EQUITY
Retained Earnings	-$428.0M	$12.45B	$10.04B
YoY Change	-103.44%	24.06%	21.6%
Common Stock	$11.26B	$11.13B	$11.67B
YoY Change	1.17%	-4.64%	-3.17%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$259.0M	$236.0M	$198.0M
YoY Change	9.75%	19.19%	25.32%
Treasury Stock Shares	9.170M shares	8.960M shares	8.192M shares
Shareholders Equity	$1.534B	$15.36B	$13.69B
YoY Change
Total Liabilities & Shareholders Equity	$72.00B	$64.53B	$60.27B
YoY Change	11.57%	7.08%	12.29%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2018 Q4
OPERATING ACTIVITIES
Net Income	-$755.0M	$1.099B	$1.019B
YoY Change	-168.7%	7.85%	240.8%
Depreciation, Depletion And Amortization	$499.0M	$621.0M	$2.329B
YoY Change	-19.65%	-73.34%	4.82%
Cash From Operating Activities	-$1.286B	$970.0M	$1.245B
YoY Change	-232.58%	-22.09%	-34.16%
INVESTING ACTIVITIES
Capital Expenditures	-$548.0M	-$1.072B	-$1.363B
YoY Change	-48.88%	-21.35%	17.5%
Acquisitions
YoY Change
Other Investing Activities	-$500.0M	$292.0M	$343.0M
YoY Change	-271.23%	-14.87%	-336.55%
Cash From Investing Activities	-$1.048B	-$780.0M	-$1.020B
YoY Change	34.36%	-23.53%	-21.84%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-5.957B	842.0M	-125.0M
YoY Change	-807.48%	-773.6%	-50.0%
NET CHANGE
Cash From Operating Activities	-1.286B	970.0M	1.245B
Cash From Investing Activities	-1.048B	-780.0M	-1.020B
Cash From Financing Activities	-5.957B	842.0M	-125.0M
Net Change In Cash	-8.291B	1.032B	100.0M
YoY Change	-903.39%	932.0%	-70.24%
FREE CASH FLOW
Cash From Operating Activities	-$1.286B	$970.0M	$1.245B
Capital Expenditures	-$548.0M	-$1.072B	-$1.363B
Free Cash Flow	-$738.0M	$2.042B	$2.608B
YoY Change	-136.14%	-21.7%	-14.52%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000027904
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	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	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
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CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-5424
CY2020	dei	Entity Registrant Name EntityRegistrantName	DELTA AIR LINES, INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	58-0218548
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	Post Office Box 20706
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Atlanta
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	GA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	30320-6001
CY2020	dei	City Area Code CityAreaCode	404
CY2020	dei	Local Phone Number LocalPhoneNumber	715-2600
CY2020	dei	Security12b Title Security12bTitle	Common Stock, par value $0.0001 per share
CY2020	dei	Trading Symbol TradingSymbol	DAL
CY2020	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2019	us-gaap	Cost Of Services Catering CostOfServicesCatering	1251000000	USD
CY2018	us-gaap	Cost Of Services Catering CostOfServicesCatering	1178000000	USD
CY2020	us-gaap	Aircraft Rental AircraftRental	399000000	USD
CY2019	us-gaap	Aircraft Rental AircraftRental	423000000	USD
CY2018	us-gaap	Aircraft Rental AircraftRental	394000000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	8219000000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2020	dal	Grants Recognized Government Grants GrantsRecognizedGovernmentGrants	3946000000	USD
CY2019	dal	Grants Recognized Government Grants GrantsRecognizedGovernmentGrants	0	USD
CY2018	dal	Grants Recognized Government Grants GrantsRecognizedGovernmentGrants	0	USD
CY2020	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	0	USD
CY2019	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1643000000	USD
CY2018	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1301000000	USD
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1163000000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1771000000	USD
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1723000000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	29564000000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	40389000000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	39174000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-12469000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	6618000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	5264000000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-929000000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-301000000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-311000000	USD
CY2020	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-2432000000	USD
CY2018	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-60000000	USD
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-105000000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	119000000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	38000000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	348000000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-176000000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	220000000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-3118000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-420000000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-113000000	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
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5151000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3202000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1431000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1216000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-12385000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-19.49
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.32
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.69
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-19.49
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.30
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.67
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.51
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.31
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-12385000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	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
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	15000000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-324000000	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
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	113000000	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
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-98000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-13434000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4603000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3837000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-12385000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2020	us-gaap	Other Restructuring Costs OtherRestructuringCosts	4111000000	USD
CY2019	us-gaap	Other Restructuring Costs OtherRestructuringCosts	0	USD
CY2018	us-gaap	Other Restructuring Costs OtherRestructuringCosts	0	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2312000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2581000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2329000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3110000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1473000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1364000000	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
CY2018	dal	Noncash Effect Of Pension Postretirement And Postemployment Payments Greater Less Than Expense NoncashEffectOfPensionPostretirementAndPostemploymentPaymentsGreaterLessThanExpense	790000000	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
CY2018	dal	Income Loss From Equity Method Investments And Other Than Temporary Impairment IncomeLossFromEquityMethodInvestmentsAndOtherThanTemporaryImpairment	-60000000	USD
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-1168000000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	775000000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-108000000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-354000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	139000000	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
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	221000000	USD
CY2020	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	-1650000000	USD
CY2019	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	354000000	USD
CY2018	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	233000000	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
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-418000000	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
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	47000000	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
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-573000000	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
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7014000000	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2020	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	896000000	USD
CY2019	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	3344000000	USD
CY2018	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	3704000000	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
CY2018	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	1464000000	USD
CY2020	dal	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	465000000	USD
CY2019	dal	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	0	USD
CY2018	dal	Sale Leaseback Cash Proceeds Investing SaleLeasebackCashProceedsInvesting	0	USD
CY2020	dal	Payments To Acquire Equity Investments PaymentsToAcquireEquityInvestments	2099000000	USD
CY2019	dal	Payments To Acquire Equity Investments PaymentsToAcquireEquityInvestments	170000000	USD
CY2018	dal	Payments To Acquire Equity Investments PaymentsToAcquireEquityInvestments	0	USD
CY2020	dal	Proceeds From Sale Of Equity Investments ProceedsFromSaleOfEquityInvestments	0	USD
CY2019	dal	Proceeds From Sale Of Equity Investments ProceedsFromSaleOfEquityInvestments	279000000	USD
CY2018	dal	Proceeds From Sale Of Equity Investments ProceedsFromSaleOfEquityInvestments	28000000	USD
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	13400000000	USD
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	145000000	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
CY2018	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	766000000	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
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-126000000	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
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4393000000	USD
CY2020	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	3261000000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	1750000000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	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
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3745000000	USD
CY2020	dal	Sale Leaseback Cash Proceeds Financing SaleLeasebackCashProceedsFinancing	2306000000	USD
CY2019	dal	Sale Leaseback Cash Proceeds Financing SaleLeasebackCashProceedsFinancing	0	USD
CY2018	dal	Sale Leaseback Cash Proceeds Financing SaleLeasebackCashProceedsFinancing	0	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
CY2018	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	3052000000	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
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1575000000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	260000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	980000000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	909000000	USD
CY2020	dal	Proceeds From Purchasing Card ProceedsFromPurchasingCard	364000000	USD
CY2019	dal	Repayments Of Purchasing Card RepaymentsOfPurchasingCard	339000000	USD
CY2018	dal	Proceeds From Purchasing Card ProceedsFromPurchasingCard	7000000	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
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	58000000	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
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1726000000	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
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	895000000	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
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1853000000	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
CY2020	us-gaap	Interest Paid Net InterestPaidNet	761000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	481000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	376000000	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
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1041000000	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
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	93000000	USD
CY2020	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	0	USD
CY2019	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	190000000	USD
CY2018	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	7000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	12530000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2018	us-gaap	Dividends Dividends	909000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-98000000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	51000000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	13000000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1575000000	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
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
CY2018	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	54.90
CY2020	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>
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
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1565000000	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
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	47000000	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
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1136000000	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
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	17511000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	17027000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	26500000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	26529000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	31310000000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2300000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2600000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2300000000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	304000000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	239000000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	205000000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	1000000000.0	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	1100000000	USD
CY2020	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<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 review flight equipment 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. See Note 2, "Impact of the COVID-19 Pandemic," for information on impairments and related charges recorded during 2020.</span></div><div style="text-indent:13.54pt"><span><br/></span></div><div style="text-indent:13.54pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">To determine whether impairments exist for active and temporarily parked aircraft, 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. Given the substantial reduction in our active aircraft and diminished projections of future cash flows in the near term as a result of the COVID-19 pandemic, we evaluated our fleet during 2020 and determined that only the fleet types discussed in Note 2, "Impact of the COVID-19 Pandemic," were impaired, as the future cash flows from the operation of all other fleet types through the respective retirement dates exceeded the carrying value. As we obtain greater clarity about the duration and extent of reduced demand and potentially execute further capacity adjustments, we will continue to evaluate our fleet compared to network requirements and may decide to retire additional aircraft. Future decisions regarding the temporarily parked aircraft and the timing of any return to service will be dependent on the evolution of the demand environment.</span></div>
CY2020Q4	us-gaap	Short Term Non Bank Loans And Notes Payable ShortTermNonBankLoansAndNotesPayable	1100000000	USD
CY2019Q4	us-gaap	Short Term Non Bank Loans And Notes Payable ShortTermNonBankLoansAndNotesPayable	736000000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	119000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	288000000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	267000000	USD
CY2020	dal	Year Over Year Decrease In System Capacity Percentage YearOverYearDecreaseInSystemCapacityPercentage	0.50
	dal	Year Over Year Decrease In System Capacity Percentage YearOverYearDecreaseInSystemCapacityPercentage	0.60
CY2020	dal	Number Of Aircraft Permanently Retired NumberOfAircraftPermanentlyRetired	227	aircraft
CY2020Q4	dal	Number Of Aircraft Temporarily Parked NumberOfAircraftTemporarilyParked	125	aircraft
CY2020	dal	Number Of Aircraft Removed From Active Service NumberOfAircraftRemovedFromActiveService	350	aircraft
CY2020	dal	Employee Related Cost Reductions Number Of Employees Volunteering For Leave EmployeeRelatedCostReductionsNumberOfEmployeesVolunteeringForLeave	50000	employee
	dal	Employee Related Cost Reductions Percentage Salary Reduction Chief Executive Officer EmployeeRelatedCostReductionsPercentageSalaryReductionChiefExecutiveOfficer	1
	dal	Employee Related Cost Reductions Percentage Salary Reduction Company Officers EmployeeRelatedCostReductionsPercentageSalaryReductionCompanyOfficers	0.50
	dal	Employee Related Cost Reductions Percentage Reduction In Work Hours Management And Employee Groups EmployeeRelatedCostReductionsPercentageReductionInWorkHoursManagementAndEmployeeGroups	0.25
CY2020Q4	dal	Cash Cash Equivalents Short Term Investments And Amounts Available Under Revolving Credit Facilities CashCashEquivalentsShortTermInvestmentsAndAmountsAvailableUnderRevolvingCreditFacilities	16700000000	USD
CY2020	dal	Financing Transactions Completed Amount FinancingTransactionsCompletedAmount	25900000000	USD
CY2020	dal	Proceeds From Government Assistance Payroll Support Program Cares Act ProceedsFromGovernmentAssistancePayrollSupportProgramCARESAct	5600000000	USD
CY2020	dal	Reduction In Planned Capital Expenditures ReductionInPlannedCapitalExpenditures	2800000000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1900000000	USD
	dal	Relief Received Through Payroll Support Program Cares Act ReliefReceivedThroughPayrollSupportProgramCARESAct	5600000000	USD
	dal	Grant Payments Received Through Payroll Support Program Cares Act GrantPaymentsReceivedThroughPayrollSupportProgramCARESAct	4000000000.0	USD
	dal	Expected Liquidity Realized Through Deferred Payroll Taxes ExpectedLiquidityRealizedThroughDeferredPayrollTaxes	200000000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	8219000000	USD
CY2020	dal	Number Of Aircraft To Be Retired NumberOfAircraftToBeRetired	383	aircraft
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	4409000000	USD
CY2020	dal	Contract With Customer Liability Refund To Customer ContractWithCustomerLiabilityRefundToCustomer	3100000000	USD
CY2020Q4	dal	Contract With Customer Liability Travel Credits As Percentage Of Total Liability ContractWithCustomerLiabilityTravelCreditsAsPercentageOfTotalLiability	0.65
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3100000000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3800000000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3500000000	USD
CY2020	dal	Sales Of Mileage Credits SalesOfMileageCredits	2800000000	USD
CY2019	dal	Sales Of Mileage Credits SalesOfMileageCredits	4200000000	USD
CY2018	dal	Sales Of Mileage Credits SalesOfMileageCredits	3500000000	USD
CY2020	dal	Frequent Flyer Liability Mileage Credits Earned FrequentFlyerLiabilityMileageCreditsEarned	1437000000	USD
CY2019	dal	Frequent Flyer Liability Mileage Credits Earned FrequentFlyerLiabilityMileageCreditsEarned	3156000000	USD
CY2018	dal	Frequent Flyer Liability Mileage Credits Earned FrequentFlyerLiabilityMileageCreditsEarned	3142000000	USD
CY2020	dal	Frequent Flyer Liability Travel Mileage Credits Redeemed FrequentFlyerLiabilityTravelMileageCreditsRedeemed	935000000	USD
CY2019	dal	Frequent Flyer Liability Travel Mileage Credits Redeemed FrequentFlyerLiabilityTravelMileageCreditsRedeemed	2900000000	USD
CY2018	dal	Frequent Flyer Liability Travel Mileage Credits Redeemed FrequentFlyerLiabilityTravelMileageCreditsRedeemed	2651000000	USD
CY2020	dal	Frequent Flyer Liability Non Travel Mileage Credits Redeemed FrequentFlyerLiabilityNonTravelMileageCreditsRedeemed	48000000	USD
CY2019	dal	Frequent Flyer Liability Non Travel Mileage Credits Redeemed FrequentFlyerLiabilityNonTravelMileageCreditsRedeemed	169000000	USD
CY2018	dal	Frequent Flyer Liability Non Travel Mileage Credits Redeemed FrequentFlyerLiabilityNonTravelMileageCreditsRedeemed	171000000	USD
CY2020	dal	Mileage Credit Redemption Majority Of New Miles Redemption Period MileageCreditRedemptionMajorityOfNewMilesRedemptionPeriod	P2Y
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
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	44438000000	USD
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	5800000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	4900000000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	1417000000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	1099000000	USD
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-105000000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	119000000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	38000000	USD
CY2020Q1	dal	Number Of Parties In Joint Venture NumberOfPartiesInJointVenture	3	joint_venture_party
CY2020Q1	dal	Proceeds From Settlement Of Interest Rate Swap Contracts ProceedsFromSettlementOfInterestRateSwapContracts	100000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	1000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	68000000	USD
CY2020Q4	us-gaap	Hedged Liability Discontinued Fair Value Hedge Cumulative Increase Decrease HedgedLiabilityDiscontinuedFairValueHedgeCumulativeIncreaseDecrease	-76000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	1000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	68000000	USD
CY2020Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2020Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	34000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	9753000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	9781000000	USD
CY2020Q4	dal	Indefinite Lived Intangible Assets And Goodwill IndefiniteLivedIntangibleAssetsAndGoodwill	15671000000	USD
CY2019Q4	dal	Indefinite Lived Intangible Assets And Goodwill IndefiniteLivedIntangibleAssetsAndGoodwill	14841000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	883000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	873000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	17000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	9000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	9000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	9000000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	28214000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	9991000000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	240000000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-115000000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	27974000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	10106000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1443000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2054000000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	26531000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	8052000000	USD
CY2020Q4	dal	Letters Of Credit Outstanding That Reduce Availability Under Revolving Facilities Amount LettersOfCreditOutstandingThatReduceAvailabilityUnderRevolvingFacilitiesAmount	300000000	USD
CY2020Q4	dal	Letters Of Credit Outstanding That Do Not Reduce Availability Under Revolving Facilities Amount LettersOfCreditOutstandingThatDoNotReduceAvailabilityUnderRevolvingFacilitiesAmount	300000000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	27974000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	10106000000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	29800000000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	10400000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1480000000	USD
CY2020Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year One DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne	62000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1882000000	USD
CY2020Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Two DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo	63000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	4016000000	USD
CY2020Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Three DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree	54000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	3126000000	USD
CY2020Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Four DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour	46000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	5157000000	USD
CY2020Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Five DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFive	23000000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	12553000000	USD
CY2020Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net After Year Five DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFive	-8000000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	28214000000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	240000000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	27974000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5733000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5627000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1002000000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1062000000	USD
CY2020Q4	dal	Lease Right Of Use Asset LeaseRightOfUseAsset	6735000000	USD
CY2019Q4	dal	Lease Right Of Use Asset LeaseRightOfUseAsset	6689000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	678000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	801000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	289000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	233000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5713000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5294000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	894000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	821000000	USD
CY2020Q4	dal	Lease Liability LeaseLiability	7574000000	USD
CY2019Q4	dal	Lease Liability LeaseLiability	7149000000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0488
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0373
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0361
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0346
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
CY2018	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	100000000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	32000000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	29000000	USD
CY2018	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	22000000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	1019000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	1013000000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	994000000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	264000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	500000000	USD
CY2018	us-gaap	Short Term Lease Cost ShortTermLeaseCost	458000000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1406000000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1456000000	USD
CY2018	us-gaap	Variable Lease Cost VariableLeaseCost	1427000000	USD
CY2020	us-gaap	Lease Cost LeaseCost	2852000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	3108000000	USD
CY2018	us-gaap	Lease Cost LeaseCost	3001000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	1053000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	1166000000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	1271000000	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
CY2018	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	22000000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	255000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	192000000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	108000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	949000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	328000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	848000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	238000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	837000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	191000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	770000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	266000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	746000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	128000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	4450000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	149000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	8600000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	1300000000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2209000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	117000000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	6391000000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1183000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	678000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	289000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5713000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	894000000	USD
CY2020Q4	dal	Lessee Finance Lease And Operating Lease Lease Not Yet Commenced Amount LesseeFinanceLeaseAndOperatingLeaseLeaseNotYetCommencedAmount	734000000	USD
CY2020	dal	Unfunded Liability Defined Benefit Plan Interest Rate UnfundedLiabilityDefinedBenefitPlanInterestRate	0.0885
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	500000000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	805000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1000000000.0	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	925000000	USD
CY2020	dal	Assumed Health Care Plan Pre Age AssumedHealthCarePlanPreAge	P65Y
CY2020	dal	Assumed Health Care Plan Post Age AssumedHealthCarePlanPostAge	P65Y
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0262
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0340
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
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Files In Submission

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$DAL
DELTA AIR LINES, INC. Stock $dal

2020 Q4 Form 10-K Financial Statement

#000002790421000003 Filed on February 12, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL DELTA AIR LINES, INC. Stock $dal

2020 Q4 Form 10-K Financial Statement

#000002790421000003 Filed on February 12, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL
DELTA AIR LINES, INC. Stock $dal