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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2024
Accounting Policies [Abstract] |
Reconciliation of Cash, Cash Equivalents and Restricted Cash | The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the statements of consolidated cash flows (in millions):
| At December 31,
| 2024 |  | 2023 |  | 2022
Current assets: |  |  |  |  |
Cash and cash equivalents | $ | 8,769 |  |  | $ | 6,058 |  |  | $ | 7,166 |
Restricted cash in Prepaid expenses and other | 11 |  |  | 31 |  |  | 45 |
Noncurrent assets: |  |  |  |  |
Restricted cash in Investments in affiliates and other, net | 166 |  |  | 245 |  |  | 210 |
Total cash, cash equivalents and restricted cash | $ | 8,946 |  |  | $ | 6,334 |  |  | $ | 7,421 |
Reconciliation of Cash, Cash Equivalents and Restricted Cash | The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the statements of consolidated cash flows (in millions):
| At December 31,
| 2024 |  | 2023 |  | 2022
Current assets: |  |  |  |  |
Cash and cash equivalents | $ | 8,769 |  |  | $ | 6,058 |  |  | $ | 7,166 |
Restricted cash in Prepaid expenses and other | 11 |  |  | 31 |  |  | 45 |
Noncurrent assets: |  |  |  |  |
Restricted cash in Investments in affiliates and other, net | 166 |  |  | 245 |  |  | 210 |
Total cash, cash equivalents and restricted cash | $ | 8,946 |  |  | $ | 6,334 |  |  | $ | 7,421 |
Operating Property and Equipment, Net | The estimated useful lives of property and equipment are as follows:
|  | Estimated Useful Life (in years)
Aircraft, spare engines and related rotable parts |  | 25 to 30
Aircraft seats |  | 10 to 15
Buildings |  | 25 to 45
Other property and equipment |  | 3 to 15
Computer software |  | 5 to 15
Building improvements |  | 1 to 40
Operating property and equipment, net at December 31 was as follows (in millions):
|  | 2024 |  | 2023
Flight equipment |  | $ | 52,696 |  |  | $ | 48,448 |
Other property and equipment |  | 11,908 |  |  | 10,527 |
Purchase deposits for flight equipment |  | 3,427 |  |  | 3,550 |
Total operating property and equipment |  | 68,031 |  |  | 62,525 |
Less—Accumulated depreciation and amortization |  | (25,123) |  |  | (22,710) |
Total operating property and equipment, net |  | $ | 42,908 |  |  | $ | 39,815 |
Information about Goodwill and Other Intangible Assets | The following table presents information about the Company's goodwill and other intangible assets at December 31 (in millions):
|  | 2024 |  | 2023
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Goodwill |  | $ | 4,527 |  |  |  |  | $ | 4,527 |  |  |
Indefinite-lived intangible assets |  |  |  |  |  |  |  |
China route authority |  | $ | 1,020 |  |  |  |  | $ | 1,020 |  |  |
Airport slots |  | 564 |  |  |  |  | 574 |  |  |
Tradenames and logos |  | 593 |  |  |  |  | 593 |  |  |
Alliances |  | 404 |  |  |  |  | 404 |  |  |
Total |  | $ | 2,581 |  |  |  |  | $ | 2,591 |  |  |
Finite-lived intangible assets |  |  |  |  |  |  |  |
Frequent flyer database |  | $ | 1,177 |  |  | $ | 1,092 |  |  | $ | 1,177 |  |  | $ | 1,068 |
Hubs |  | 145 |  |  | 138 |  |  | 145 |  |  | 131 |
Other |  | 143 |  |  | 133 |  |  | 307 |  |  | 296 |
Total |  | $ | 1,465 |  |  | $ | 1,363 |  |  | $ | 1,629 |  |  | $ | 1,495 |

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