Class Of Warrant Or Right, Shares Called By Warrants As Percentage Of Outstanding Shares

No definition available.

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Namespace Prefix:	dal_
Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Grant Payments Received Through Payroll Support Program

+ References

No definition available.

+ Details

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Namespace Prefix:	dal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Grants Recognized, Government Grants

+ References

No definition available.

+ Details

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Namespace Prefix:	dal_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Proceeds from Government Payroll Support Program

+ References

No definition available.

+ Details

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Namespace Prefix:	dal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Total carrying amount as of the balance sheet date of unearned revenue or income, not otherwise specified in the taxonomy, which is expected to be taken into income in future periods and obligations not separately disclosed in the balance sheet (other liabilities).

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_DebtInstrumentAxis=dal_PayrollSupportProgramLoanMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=dal_PayrollSupportProgramExtensionLoanMember
Namespace Prefix:
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- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=dal_DeltaCommonStockWarrants2020PSP1Member
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=dal_DeltaCommonStockWarrants2021PSP2Member
Namespace Prefix:
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Debt - Payroll Support Program Activity (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Payroll support program activity
Total Amount	$ 2,861		$ 5,594
Grant	2,033		3,946
Government grant recognition	1,186	$ 0
Deferred government grant	847
Unsecured debt \| PSP1 Loan
Payroll support program activity
Loan			$ 1,648
Unsecured debt \| PSP2 Loan
Payroll support program activity
Loan	$ 828
PSP1 Warrants
Payroll support program activity
Number of Warrants			6.8
Percentage of Outstanding Shares	1.10%
PSP2 Warrants
Payroll support program activity
Number of Warrants	2.1
Percentage of Outstanding Shares	0.30%