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LEASES - Narrative (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) lease aircraft airport
Lessee, Lease, Description [Line Items] |
Leases that have not yet commenced | $ | $ 151
Minimum |
Lessee, Lease, Description [Line Items] |
Leases that have not yet commenced, term of contract | 4 years
Maximum |
Lessee, Lease, Description [Line Items] |
Leases that have not yet commenced, term of contract | 19 years
Aircraft |
Lessee, Lease, Description [Line Items] |
Number of leases | 225
Number of finance leases | 111
Number of operating leases | 114
Lease component of purchase agreements, number of aircraft | aircraft | 116
Aircraft | Minimum |
Lessee, Lease, Description [Line Items] |
Remaining term of operating leases | 5 months
Remaining term of finance leases | 5 months
Aircraft | Maximum |
Lessee, Lease, Description [Line Items] |
Remaining term of operating leases | 12 years
Remaining term of finance leases | 12 years
Airport Facilities |
Lessee, Lease, Description [Line Items] |
Number of airports with facility space under lease | airport | 300
Airport Facilities | Minimum |
Lessee, Lease, Description [Line Items] |
Remaining term of operating leases | 1 month
Airport Facilities | Maximum |
Lessee, Lease, Description [Line Items] |
Remaining term of operating leases | 29 years
Other Ground Property and Equipment | Minimum |
Lessee, Lease, Description [Line Items] |
Remaining term of operating leases | 1 month
Remaining term of finance leases | 1 month
Other Ground Property and Equipment | Maximum |
Lessee, Lease, Description [Line Items] |
Remaining term of operating leases | 6 years
Remaining term of finance leases | 6 years

X
- Definition Finance Lease, Number Of Leases + References No definition available. + Details
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Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Lease Component Of Purchase Agreements, Number Of Aircraft + References No definition available. + Details
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Namespace Prefix: | dal_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Lease, Number Of Leases + References No definition available. + Details
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Namespace Prefix: | dal_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of lessee's finance leases and operating leases not yet commenced. + References No definition available. + Details
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Namespace Prefix: | dal_
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Period Type: | instant

X
- Definition Term of lessee's finance leases and operating leases not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | dal_
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Balance Type: | na
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X
- Definition Operating Lease, Number Of Airports With Facility Space Under Lease + References No definition available. + Details
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Namespace Prefix: | dal_
Data Type: | xbrli:integerItemType
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Period Type: | instant

X
- Definition Operating Lease, Number Of Leases + References No definition available. + Details
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Data Type: | xbrli:integerItemType
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Period Type: | instant

X
- Definition Remaining lease term of finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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X
- Definition Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |