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Revenue Recognition | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Revenue Recognition | Revenue Recognition The Company categorizes revenue recognized from contracts with its customers by revenue source as we believe it best depicts the nature, amount, timing, and uncertainty of our revenue and cash flow. The following table provides revenue recognized by revenue source for the years ended December 31, 2023, 2022, and 2021 (in millions):
|  | Twelve Months Ended December 31,
|  | 2023 |  | 2022 |  | 2021
Passenger revenue |  |  |  |  |  |
Passenger travel |  | $ | 8,403 |  |  | $ | 8,078 |  |  | $ | 5,304 |
Loyalty revenue - air transportation |  | 605 |  |  | 508 |  |  | 305 |
Other revenue |  |  |  |  |  |
Loyalty revenue |  | 422 |  |  | 391 |  |  | 306 |
Other revenue |  | 185 |  |  | 181 |  |  | 122 |
Total operating revenue |  | $ | 9,615 |  |  | $ | 9,158 |  |  | $ | 6,037 |
TrueBlue® is our customer loyalty program designed to reward and recognize our customers. TrueBlue® points earned from ticket purchases are recorded as a reduction to Passenger travel within passenger revenue. Amounts presented in Loyalty revenue - air transportation represent the revenue recognized when TrueBlue® points have been redeemed and travel has occurred. Loyalty revenue within other revenue is primarily comprised of the non-air transportation elements of the sales of our TrueBlue® points. Contract Liabilities 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, 2023 |  | December 31, 2022
Air traffic liability - passenger travel |  | $ | 1,099 |  |  | $ | 1,291 |
Air traffic liability - loyalty program (air transportation) |  | 1,072 |  |  | 1,000 |
Deferred revenue (1) |  | 487 |  |  | 530 |
Total |  | $ | 2,658 |  |  | $ | 2,821 |
(1) Deferred revenue is included within other accrued liabilities and other liabilities on our consolidated balance sheets. During the years ended December 31, 2023 and 2022, we recognized passenger revenue of $1.2 billion that was included in passenger travel liability at the beginning of the respective periods. The Company elected the practical expedient that allows entities to not disclose the amount of the remaining transaction price and its expected timing of recognition for passenger tickets if the contract has an original expected duration of one year or less or if certain other conditions are met. We elected to apply this practical expedient to our contract liabilities relating to passenger travel and ancillary services as our tickets or any related passenger credits expire generally one year from the date of issuance. TrueBlue® points are combined into one homogeneous pool and are not separately identifiable. As such, the revenue is comprised of the points that were part of the air traffic liability balance at the beginning of the period as well as points that were issued during the period. 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, 2023 and 2022 (in millions):
Balance at December 31, 2021 | $ | 891 |
TrueBlue® points redeemed passenger | (508) |
TrueBlue® points earned and sold | 617 |
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 |
The timing of our TrueBlue® point redemptions can vary; however, the majority of our points are redeemed within approximately three years of the date of issuance.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-15 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-13 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org//606/tableOfContent + Details
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