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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2024
Revenue from Contract with Customer [Abstract] |
Disaggregation of revenue | The following table provides revenue recognized by revenue source for the years ended December 31, 2024, 2023, and 2022 (in millions):
|  | Twelve Months Ended December 31,
|  | 2024 |  | 2023 |  | 2022
Passenger revenue |  |  |  |  |  |
Passenger travel |  | $ | 7,983 |  |  | $ | 8,403 |  |  | $ | 8,078 |
Loyalty revenue - air transportation |  | 634 |  |  | 605 |  |  | 508 |
Other revenue |  |  |  |  |  |
Loyalty revenue |  | 464 |  |  | 422 |  |  | 391 |
Other revenue |  | 198 |  |  | 185 |  |  | 181 |
Total operating revenue |  | $ | 9,279 |  |  | $ | 9,615 |  |  | $ | 9,158 |
Contract with customer, contract asset, contract liability, and receivable | Our contract liabilities primarily consist of ticket sales for which transportation has not yet been provided, unused credits available to customers, and outstanding loyalty points available for redemption (in millions):
|  | December 31, 2024 |  | December 31, 2023
Air traffic liability - passenger travel |  | $ | 1,073 |  |  | $ | 1,099 |
Air traffic liability - loyalty program (air transportation) |  | 1,125 |  |  | 1,072 |
Deferred revenue - passenger travel and loyalty program travel (1) |  | 389 |  |  | 455 |
Deferred revenue - other (2) |  | 27 |  |  | 32 |
Total |  | $ | 2,614 |  |  | $ | 2,658 |
(1) Included within other accrued liabilities and other liabilities on our consolidated balance sheets. (2) Included within air traffic liability on our consolidated balance sheets. The table below presents the activity of the current and non-current air traffic liability for our loyalty program, and includes points earned and sold to participating companies for the years ended December 31, 2024 and 2023 (in millions):
Balance at December 31, 2022 | $ | 1,000 |
TrueBlue® points redeemed passenger | (605) |
TrueBlue® points redeemed other | (24) |
TrueBlue® points earned and sold | 701 |
Balance at December 31, 2023 | 1,072 |
TrueBlue® points redeemed passenger | (634) |
TrueBlue® points redeemed other | (26) |
TrueBlue® points earned and sold | 713 |
Balance at December 31, 2024 | $ | 1,125 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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