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DEBT - Covenants (Details) - SkyMiles program $ in Millions	Dec. 31, 2022 USD ($)
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

X

- 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

X

- Details

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