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GOODWILL AND INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Goodwill |
Goodwill and indefinite-lived intangible assets by category |  |  |
| Carrying Value at |
(in millions) | December 31, 2024 | December 31, 2023
Goodwill | $ | 9,753 |  | $ | 9,753 |  |
International routes and slots | 2,583 |  | 2,583 |  |
Airline alliances | 1,863 |  | 1,863 |  |
Delta tradename | 850 |  | 850 |  |
Domestic slots | 622 |  | 622 |  |
Total | $ | 15,671 |  | $ | 15,671 |  |
Schedule of Finite-Lived Intangible Assets | Definite-Lived Intangible Assets
Definite-lived intangible assets by category |  |  |  |  |
| December 31, 2024 |  | December 31, 2023
(in millions) | Gross Carrying Value | Accumulated Amortization |  | Gross Carrying Value | Accumulated Amortization
Marketing agreements | $ | 730 |  | $ | (712) |  |  | $ | 730 |  | $ | (708) |
Maintenance contracts | 192 |  | (154) |  |  | 192 |  | (150) |
Other | 54 |  | (53) |  |  | 54 |  | (53) |
Total | $ | 976 |  | $ | (919) |  |  | $ | 976 |  | $ | (911) |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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