$DAL
DELTA AIR LINES, INC. Stock $dal

$dal Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000002790420000004 Filed on February 13, 2020

Income Statement

Concept	2019 Q4	2019	2018 Q4
Revenue	$11.44B	$47.01B	$10.74B
YoY Change	6.49%	5.78%	5.02%
Cost Of Revenue	$5.104B	$21.14B	$5.284B
YoY Change	-3.41%	-0.26%	20.5%
Gross Profit	$6.335B	$25.87B	$5.458B
YoY Change	16.07%	11.29%	-6.59%
Gross Profit Margin	55.38%	55.04%	50.81%
Selling, General & Admin	$3.825B	$14.86B	$3.517B
YoY Change	8.76%	6.26%	8.18%
% of Gross Profit	60.38%	57.44%	64.44%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$621.0M	$2.581B	$2.329B
YoY Change	-73.34%	10.82%	4.82%
% of Gross Profit	9.8%	9.98%	42.67%
Operating Expenses	$4.900B	$19.21B	$4.505B
YoY Change	8.77%	-50.95%	6.93%
Operating Profit	$1.399B	$6.618B	$1.090B
YoY Change	28.35%	25.72%	-6.2%
Interest Expense	$27.00M	-$223.0M	$256.0M
YoY Change	-89.45%	-8.61%	-145.07%
% of Operating Profit	1.93%	-3.37%	23.49%
Other Income/Expense, Net	-$64.00M	-$420.0M	$136.0M
YoY Change	-147.06%	271.68%	-815.79%
Pretax Income	$1.398B	$6.198B	$1.345B
YoY Change	3.94%	20.33%	28.95%
Income Tax	$300.0M	$1.431B	$326.0M
% Of Pretax Income	21.46%	23.09%	24.24%
Net Earnings	$1.099B	$4.767B	$1.019B
YoY Change	7.85%	21.14%	240.8%
Net Earnings / Revenue	9.61%	10.14%	9.49%
Basic Earnings Per Share	$1.71	$7.32	$1.50
Diluted Earnings Per Share	$1.71	$7.30	$1.49
COMMON SHARES
Basic Shares Outstanding		651.0M shares
Diluted Shares Outstanding		653.0M shares

Balance Sheet

Concept	2019 Q4	2019	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.882B	$2.882B	$1.768B
YoY Change	63.01%	63.01%	-33.0%
Cash & Equivalents	$2.882B	$2.882B	$1.565B
Short-Term Investments			$203.0M
Other Short-Term Assets	$1.262B	$1.262B	$1.203B
YoY Change	4.9%	4.9%	-17.55%
Inventory	$1.251B	$1.251B	$1.055B
Prepaid Expenses
Receivables	$2.854B	$2.854B	$2.314B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$8.249B	$8.249B	$6.340B
YoY Change	30.11%	30.11%	-18.76%
LONG-TERM ASSETS
Property, Plant & Equipment	$36.94B	$36.94B	$28.34B
YoY Change	30.36%	7.6%	6.67%
Goodwill	$9.781B		$9.781B
YoY Change	0.0%		-0.13%
Intangibles	$5.163B		$4.830B
YoY Change	6.89%		-0.35%
Long-Term Investments
YoY Change
Other Assets	$1.078B	$4.402B	$3.850B
YoY Change	-72.0%	-11.71%	16.35%
Total Long-Term Assets	$56.28B	$56.28B	$53.93B
YoY Change	4.37%	4.37%	17.57%
TOTAL ASSETS
Total Short-Term Assets	$8.249B	$8.249B	$6.340B
Total Long-Term Assets	$56.28B	$56.28B	$53.93B
Total Assets	$64.53B	$64.53B	$60.27B
YoY Change	7.08%	7.08%	12.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.266B	$3.266B	$2.976B
YoY Change	9.74%	9.74%	-18.11%
Accrued Expenses	$5.561B	$5.561B	$5.337B
YoY Change	4.2%	4.2%	27.59%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.054B	$2.287B	$1.409B
YoY Change	45.78%	50.66%	-34.31%
Total Short-Term Liabilities	$20.20B	$20.20B	$18.58B
YoY Change	8.75%	8.75%	-2.01%
LONG-TERM LIABILITIES
Long-Term Debt	$8.052B	$8.873B	$7.959B
YoY Change	1.17%	7.51%	26.43%
Other Long-Term Liabilities	$1.386B	$18.64B	$969.0M
YoY Change	43.03%	-5.61%	-56.37%
Total Long-Term Liabilities	$28.97B	$27.51B	$28.00B
YoY Change	3.46%	-1.74%	26.23%
TOTAL LIABILITIES
Total Short-Term Liabilities	$20.20B	$20.20B	$18.58B
Total Long-Term Liabilities	$28.97B	$27.51B	$28.00B
Total Liabilities	$49.17B	$49.17B	$46.58B
YoY Change	5.57%	5.57%	13.22%
SHAREHOLDERS EQUITY
Retained Earnings	$12.45B		$10.04B
YoY Change	24.06%		21.6%
Common Stock	$11.13B		$11.67B
YoY Change	-4.64%		-3.17%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$236.0M		$198.0M
YoY Change	19.19%		25.32%
Treasury Stock Shares	8.960M shares		8.192M shares
Shareholders Equity	$15.36B	$15.36B	$13.69B
YoY Change
Total Liabilities & Shareholders Equity	$64.53B	$64.53B	$60.27B
YoY Change	7.08%	7.08%	12.29%

Cashflow Statement

Concept	2019 Q4	2019	2018 Q4
OPERATING ACTIVITIES
Net Income	$1.099B	$4.767B	$1.019B
YoY Change	7.85%	21.14%	240.8%
Depreciation, Depletion And Amortization	$621.0M	$2.581B	$2.329B
YoY Change	-73.34%	10.82%	4.82%
Cash From Operating Activities	$970.0M	$8.425B	$1.245B
YoY Change	-22.09%	20.12%	-34.16%
INVESTING ACTIVITIES
Capital Expenditures	-$1.072B	-$4.936B	-$1.363B
YoY Change	-21.35%	-4.49%	17.5%
Acquisitions
YoY Change
Other Investing Activities	$292.0M	-$58.00M	$343.0M
YoY Change	-14.87%	-53.97%	-336.55%
Cash From Investing Activities	-$780.0M	-$4.563B	-$1.020B
YoY Change	-23.53%	3.87%	-21.84%
FINANCING ACTIVITIES
Cash Dividend Paid		$980.0M
YoY Change		7.81%
Common Stock Issuance & Retirement, Net		$2.027B
YoY Change		28.7%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	842.0M	-$2.880B	-125.0M
YoY Change	-773.6%	66.86%	-50.0%
NET CHANGE
Cash From Operating Activities	970.0M	$8.425B	1.245B
Cash From Investing Activities	-780.0M	-$4.563B	-1.020B
Cash From Financing Activities	842.0M	-$2.880B	-125.0M
Net Change In Cash	1.032B	$982.0M	100.0M
YoY Change	932.0%	9.72%	-70.24%
FREE CASH FLOW
Cash From Operating Activities	$970.0M	$8.425B	$1.245B
Capital Expenditures	-$1.072B	-$4.936B	-$1.363B
Free Cash Flow	$2.042B	$13.36B	$2.608B
YoY Change	-21.7%	9.68%	-14.52%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000027904
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dal	Mileage Credit Marketing Agreement Duration Minimum MileageCreditMarketingAgreementDurationMinimum	P1Y
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CY2019Q4	dal	Profit Sharing Threshold ProfitSharingThreshold	2500000000	USD
	dal	Percent Of Threshold Amount For Profit Sharing Payout PercentOfThresholdAmountForProfitSharingPayout	0.10
	dal	Percent Of Amount Above Threshold For Profit Sharing Payout PercentOfAmountAboveThresholdForProfitSharingPayout	0.20
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-5424
CY2019	dei	Entity Registrant Name EntityRegistrantName	DELTA AIR LINES, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	58-0218548
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	Post Office Box 20706
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CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Atlanta
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	GA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	30320-6001
CY2019	dei	City Area Code CityAreaCode	404
CY2019	dei	Local Phone Number LocalPhoneNumber	715-2600
CY2019	dei	Security12b Title Security12bTitle	Common Stock, par value $0.0001 per share
CY2019	dei	Trading Symbol TradingSymbol	DAL
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-238000000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	160000000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-70000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-420000000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-113000000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-466000000	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
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5500000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1431000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1216000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2295000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	3205000000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.32
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.69
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.45
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.30
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.67
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.43
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.51
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.31
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.02
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	3205000000	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
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-29000000	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
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	98000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	142000000	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
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4603000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3837000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3220000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4767000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	3205000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2581000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2329000000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2222000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1473000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1364000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2242000000	USD
CY2019	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	922000000	USD
CY2018	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	790000000	USD
CY2017	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	3302000000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	775000000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-108000000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	428000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	139000000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-324000000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	397000000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-94000000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	440000000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	57000000	USD
CY2019	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	354000000	USD
CY2018	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	233000000	USD
CY2017	dal	Increase Decrease In Profit Sharing IncreaseDecreaseInProfitSharing	-51000000	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
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	955000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	307000000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-247000000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-49000000	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
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5023000000	USD
CY2019	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	3344000000	USD
CY2018	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	3704000000	USD
CY2017	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	2704000000	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
CY2017	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	1187000000	USD
CY2019	dal	Payments To Acquire Equity Investments PaymentsToAcquireEquityInvestments	170000000	USD
CY2018	dal	Payments To Acquire Equity Investments PaymentsToAcquireEquityInvestments	0	USD
CY2017	dal	Payments To Acquire Equity Investments PaymentsToAcquireEquityInvestments	1245000000	USD
CY2019	dal	Proceeds From Sale Of Equity Investments ProceedsFromSaleOfEquityInvestments	279000000	USD
CY2018	dal	Proceeds From Sale Of Equity Investments ProceedsFromSaleOfEquityInvestments	28000000	USD
CY2017	dal	Proceeds From Sale Of Equity Investments ProceedsFromSaleOfEquityInvestments	0	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	145000000	USD
CY2017	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	925000000	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
CY2017	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	584000000	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
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-211000000	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
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5266000000	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
CY2017	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1258000000	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
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1677000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	980000000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	909000000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	731000000	USD
CY2019	dal	Repayments Of Purchasing Card RepaymentsOfPurchasingCard	339000000	USD
CY2018	dal	Proceeds From Purchasing Card ProceedsFromPurchasingCard	7000000	USD
CY2017	dal	Proceeds From Purchasing Card ProceedsFromPurchasingCard	636000000	USD
CY2019	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	1750000000	USD
CY2018	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2017	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	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
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2454000000	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
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-154000000	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
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-730000000	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
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-973000000	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
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2826000000	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
CY2019	us-gaap	Interest Paid Net InterestPaidNet	481000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	376000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	390000000	USD
CY2019	dal	Contribution Of Treasury Stock To Pension Plan Amount Contributed ContributionOfTreasuryStockToPensionPlanAmountContributed	0	USD
CY2018	dal	Contribution Of Treasury Stock To Pension Plan Amount Contributed ContributionOfTreasuryStockToPensionPlanAmountContributed	0	USD
CY2017	dal	Contribution Of Treasury Stock To Pension Plan Amount Contributed ContributionOfTreasuryStockToPensionPlanAmountContributed	350000000	USD
CY2019	dal	Operating Lease Obligation Incurred OperatingLeaseObligationIncurred	464000000	USD
CY2018	dal	Operating Lease Obligation Incurred OperatingLeaseObligationIncurred	1041000000	USD
CY2017	dal	Operating Lease Obligation Incurred OperatingLeaseObligationIncurred	0	USD
CY2019	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	650000000	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	93000000	USD
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	261000000	USD
CY2019	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	190000000	USD
CY2018	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	7000000	USD
CY2017	dal	Operating Lease Converted To Finance Lease OperatingLeaseConvertedToFinanceLease	0	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
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1814000000	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
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	39000000	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
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	0	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3730000000	USD
CY2018	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	54.90
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
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	11279000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	3205000000	USD
CY2017	us-gaap	Dividends Dividends	731000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15000000	USD
CY2017	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	48.31
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	68000000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	28000000	USD
CY2017	dal	Treasury Stock Contributedto Qualified Defined Benefit Pension Plan Amount TreasuryStockContributedtoQualifiedDefinedBenefitPensionPlanAmount	343000000	USD
CY2017	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1677000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	12530000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2018	dal	Cumulative Effect Of Change In Accounting Principle And Other CumulativeEffectOfChangeInAccountingPrincipleAndOther	-260000000	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	dal	Weighted Average Price Per Treasury Share Withheld For Taxes WeightedAveragePricePerTreasuryShareWithheldForTaxes	50.20
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
CY2019	dal	Voting Rights Thresholdto Consolidate Percentage VotingRightsThresholdtoConsolidatePercentage	0.50
CY2019	us-gaap	Advertising Expense AdvertisingExpense	288000000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	267000000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="background-color:rgb(255,255,255, 0.0);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="background-color:rgb(255,255,255, 0.0);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>
CY2019Q1	dal	Stranded Tax Effect Not Reclassified Upon Adoption Of New Accounting Standard StrandedTaxEffectNotReclassifiedUponAdoptionOfNewAccountingStandard	1200000000	USD
CY2019	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	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.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 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 costs, 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.
CY2019Q4	us-gaap	Short Term Non Bank Loans And Notes Payable ShortTermNonBankLoansAndNotesPayable	736000000	USD
CY2019Q4	dal	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	17027000000	USD
CY2018Q4	dal	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	15823000000	USD
CY2019Q4	dal	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	31310000000	USD
CY2018Q4	dal	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	28335000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2600000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2300000000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2200000000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	239000000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	205000000	USD
CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	187000000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	1100000000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	819000000	USD
CY2018Q4	us-gaap	Short Term Non Bank Loans And Notes Payable ShortTermNonBankLoansAndNotesPayable	1100000000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	273000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	13000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47007000000	USD
CY2019	dal	Revenue From Flights To And From China As Percentage Of Total Revenue RevenueFromFlightsToAndFromChinaAsPercentageOfTotalRevenue	0.02
CY2019	dal	Sales Of Mileage Credits SalesOfMileageCredits	4200000000	USD
CY2018	dal	Sales Of Mileage Credits SalesOfMileageCredits	3500000000	USD
CY2017	dal	Sales Of Mileage Credits SalesOfMileageCredits	3200000000	USD
CY2019	dal	Frequent Flyer Liability Mileage Credits Earned FrequentFlyerLiabilityMileageCreditsEarned	3156000000	USD
CY2018	dal	Frequent Flyer Liability Mileage Credits Earned FrequentFlyerLiabilityMileageCreditsEarned	3142000000	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
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
CY2019	dal	Mileage Credit Redemption Majority Of New Miles Redemption Period MileageCreditRedemptionMajorityOfNewMilesRedemptionPeriod	P2Y
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	44438000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	41138000000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	119000000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	38000000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	1099000000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	1090000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	68000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	68000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	13000000	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	34000000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	9000000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	5060000000	USD
CY2018Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	4716000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	873000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	976000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	862000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	17000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	17000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	9000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	9000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	9000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	9991000000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	9308000000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-115000000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-60000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	10106000000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	9368000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2054000000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1409000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	8052000000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	7959000000	USD
CY2019Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Five DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFive	-10000000	USD
CY2019Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	3109000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	2060000000	USD
CY2019Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year One DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne	-13000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1094000000	USD
CY2019Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Two DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo	-15000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1708000000	USD
CY2019Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Three DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree	-16000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	932000000	USD
CY2019Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Year Four DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour	-11000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1508000000	USD
CY2019Q4	dal	Lease Rightof Use Asset LeaseRightofUseAsset	6689000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	2689000000	USD
CY2019Q4	dal	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net After Year Five DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFive	-50000000	USD
CY2018Q4	dal	Lease Rightof Use Asset LeaseRightofUseAsset	6484000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	9991000000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-115000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	10106000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	10106000000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	9368000000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	10400000000	USD
CY2018Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	9400000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5627000000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5994000000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1062000000	USD
CY2018Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	490000000	USD
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0346
CY2018Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0523
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	801000000	USD
CY2018Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	955000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	233000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	109000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5294000000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5801000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	821000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	294000000	USD
CY2019Q4	dal	Lease Liability LeaseLiability	7149000000	USD
CY2018Q4	dal	Lease Liability LeaseLiability	7159000000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y
CY2018Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2018Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0373
CY2018Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0369
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
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	29000000	USD
CY2018	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	22000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	1013000000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	994000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	500000000	USD
CY2018	us-gaap	Short Term Lease Cost ShortTermLeaseCost	458000000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1456000000	USD
CY2018	us-gaap	Variable Lease Cost VariableLeaseCost	1427000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	3108000000	USD
CY2018	us-gaap	Lease Cost LeaseCost	3001000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1600000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	1166000000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	1271000000	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
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	192000000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	108000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1003000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	264000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	836000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	239000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	729000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	174000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	698000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	124000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	628000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	180000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	3821000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	179000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	7715000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	1160000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1620000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	106000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	6095000000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1054000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	801000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	233000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5294000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	821000000	USD
CY2019Q4	dal	Lessee Finance Lease And Operating Lease Lease Not Yet Commenced Amount LesseeFinanceLeaseAndOperatingLeaseLeaseNotYetCommencedAmount	888000000	USD
CY2019	dal	Unfunded Liability Defined Benefit Plan Interest Rate UnfundedLiabilityDefinedBenefitPlanInterestRate	0.0885
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	500000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	991000000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	926000000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	875000000	USD
CY2019	dal	Assumed Health Care Plan Pre Age AssumedHealthCarePlanPreAge	P65Y
CY2019	dal	Assumed Health Care Plan Post Age AssumedHealthCarePlanPostAge	P65Y
CY2019Q4	us-gaap	Defined Benefit Plan Expected Amortization Next Fiscal Year DefinedBenefitPlanExpectedAmortizationNextFiscalYear	333000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0340
CY2018Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0433
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0897
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0897
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0896
CY2019Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0650
CY2018Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0675
CY2017Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0700
CY2019Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0500
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0897
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	13000000	USD
CY2019	dal	Defined Benefit Plan Percent Change Assumed In Health Care Cost Trend Metric DefinedBenefitPlanPercentChangeAssumedInHealthCareCostTrendMetric	0.01
CY2019	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1600000000	USD
CY2018	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1300000000	USD
CY2017	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	1100000000	USD
CY2019Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	91000	numberOfEmployees
CY2019Q4	dal	Percentage Of Employees Represented By Unions Under Collective Bargaining Agreements PercentageOfEmployeesRepresentedByUnionsUnderCollectiveBargainingAgreements	0.19
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-94000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-187000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	39000000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	26000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-5000000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	13000000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	54000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1343000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1226000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2093000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	130000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	138000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	149000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1431000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1216000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2295000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit	-26000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.005
CY2019Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	212000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.023
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.025
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.018
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.001
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.022
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.005
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.072
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.231
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.236
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.418
CY2017Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit	395000000	USD
CY2017Q4	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.072
CY2018Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	242000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	560000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	674000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	2241000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	2435000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	94000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	189000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1667000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1620000000	USD
CY2019Q4	dal	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	1446000000	USD
CY2018Q4	dal	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	1579000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	350000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	357000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	58000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	13000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	6300000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	6841000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5190000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4185000000	USD
CY2019Q4	dal	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	1298000000	USD
CY2018Q4	dal	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	1388000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1049000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1052000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	99000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	137000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7636000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6762000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1336000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	79000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1300000000	USD
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CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1500000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	79000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	3205000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	163000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	94000000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	1900000000	USD
CY2019	dal	Deferred Income Tax Expense Benefit Pension Obligation DeferredIncomeTaxExpenseBenefitPensionObligation	672000000	USD
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CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1500000000	shares
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	500000000	shares
CY2019	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	26.37
CY2018	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	24.14
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	163000000	shares
CY2019Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	25000000	shares
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	161000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	159000000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	169000000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	94000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2600000	shares
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 Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	49.57
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1400000	shares
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	1000000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	7000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-32000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-137000000	USD
CY2017	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-90000000	USD
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CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47007000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	6618000000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-301000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2581000000	USD
CY2019Q4	us-gaap	Assets Assets	64532000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4936000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	44438000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	5264000000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-311000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2329000000	USD
CY2018Q4	us-gaap	Assets Assets	60266000000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	5168000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	41138000000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	5966000000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-396000000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2222000000	USD
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CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3891000000	USD
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CY2018	us-gaap	Net Income Loss NetIncomeLoss	3935000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	651000000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	691000000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	720000000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
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CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	653000000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	694000000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	723000000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.32
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.69
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.45
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.30
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.67
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.43
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10472000000	USD
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CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	2071000000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1399000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	730000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	1443000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	1495000000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	1099000000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.10
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.22
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CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.71
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.09
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.31
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9968000000	USD
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CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10742000000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	844000000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1684000000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1645000000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1090000000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	557000000	USD
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CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	1322000000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	1019000000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.49
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.50
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.49
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.92
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.49

Files In Submission

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$DAL
DELTA AIR LINES, INC. Stock $dal

2019 Q4 Form 10-K Financial Statement

#000002790420000004 Filed on February 13, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL DELTA AIR LINES, INC. Stock $dal

2019 Q4 Form 10-K Financial Statement

#000002790420000004 Filed on February 13, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DAL
DELTA AIR LINES, INC. Stock $dal