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DEBT - Covenants (Details) - SkyMiles program $ in Millions | Dec. 31, 2022 USD ($)
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Debt Instrument [Line Items] |
Minimum liquidity covenant | $ 2,000
Aggregate limit on sale of pre-paid miles covenant | $ 550

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- Definition Debt Instrument, Covenant, Aggregate Limit On Sale Of Pre-Paid Miles + References No definition available. + Details
Name: | dal_DebtInstrumentCovenantAggregateLimitOnSaleOfPrePaidMiles
Namespace Prefix: | dal_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Debt Instrument, Minimum Liquidity Covenant, Unrestricted Cash, Cash Equivalents And Undrawn Credit Facilities + References No definition available. + Details
Name: | dal_DebtInstrumentMinimumLiquidityCovenantUnrestrictedCashCashEquivalentsAndUndrawnCreditFacilities
Namespace Prefix: | dal_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DebtInstrumentAxis=dal_SkyMilesProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |