Cover - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Jan. 31, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-5424
Entity Registrant Name	DELTA AIR LINES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	58-0218548
Entity Address, Address Line One	Post Office Box 20706
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30320-6001
City Area Code	404
Local Phone Number	715-2600
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	DAL
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 30.4
Entity Common Stock, Shares Outstanding		643,323,851
Documents Incorporated by Reference	Part III of this Form 10-K incorporates by reference certain information from the registrant's definitive Proxy Statement for its 2024 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission.
Entity Central Index Key	0000027904
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false