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REVENUE FROM CONTRACTS WITH CUSTOMERS | 3 Months Ended
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Mar. 31, 2023
Revenue Recognition [Abstract] |
REVENUE FROM CONTRACTS WITH CUSTOMERS | REVENUE Ticket revenue is recorded as Passenger revenue, and represents the primary source of the Company's revenue. Also included in Passenger revenue is passenger ancillary revenue such as bag fees, on-board food and beverage, and certain revenue from the frequent flyer program. Mileage Plan other revenue includes brand and marketing revenue from the co-branded credit card and other partners, and certain interline frequent flyer revenue, net of commissions. Cargo and other revenue includes freight and mail revenue, and to a lesser extent, other ancillary revenue products such as lounge membership and certain commissions. The Company disaggregates revenue by segment in Note 10. The level of detail within the Company’s condensed consolidated statements of operations, segment disclosures, and in this footnote depict the nature, amount, timing, and uncertainty of revenue and how cash flows are affected by economic and other factors. Passenger Ticket and Ancillary Services Revenue Passenger revenue recognized in the condensed consolidated statements of operations (in millions):
| Three Months Ended March 31, |  |
| 2023 |  | 2022 |  |  |  |
Passenger ticket revenue, including ticket breakage, net of taxes and fees | $ | 1,648 |  |  | $ | 1,232 |  |  |  |  |
Passenger ancillary revenue | 104 |  |  | 91 |  |  |  |  |
Mileage Plan passenger revenue | 232 |  |  | 188 |  |  |  |  |
Total Passenger revenue | $ | 1,984 |  |  | $ | 1,511 |  |  |  |  |
Mileage Plan Loyalty Program Mileage Plan revenue included in the condensed consolidated statements of operations (in millions):
| Three Months Ended March 31, |  |
| 2023 |  | 2022 |  |  |  |
Passenger revenue | $ | 232 |  |  | $ | 188 |  |  |  |  |
Mileage Plan other revenue | 154 |  |  | 112 |  |  |  |  |
Total Mileage Plan revenue | $ | 386 |  |  | $ | 300 |  |  |  |  |
Cargo and Other Revenue Cargo and other revenue included in the condensed consolidated statements of operations (in millions):
| Three Months Ended March 31, |  |
| 2023 |  | 2022 |  |  |  |
Cargo revenue | $ | 29 |  |  | $ | 29 |  |  |  |  |
Other revenue | 29 |  |  | 29 |  |  |  |  |
Total Cargo and other revenue | $ | 58 |  |  | $ | 58 |  |  |  |  |
Air Traffic Liability and Deferred Revenue Passenger ticket and ancillary services liabilities The Company recognized Passenger revenue of $485 million and $390 million from the prior year-end air traffic liability balance for the three months ended March 31, 2023 and 2022. Mileage Plan assets and liabilities The Company records a receivable for amounts due from the affinity card partner and from other partners as mileage credits are sold until the payments are collected. The Company had $94 million of such receivables as of March 31, 2023 and $83 million as of December 31, 2022. The table below presents a roll forward of the total frequent flyer liability (in millions):
| Three Months Ended March 31,
| 2023 |  | 2022
Total Deferred Revenue balance at January 1 | $ | 2,497 |  |  | $ | 2,358 |
Travel miles and companion certificate redemption - Passenger revenue | (218) |  |  | (176) |
Miles redeemed on partner airlines - Other revenue | (21) |  |  | (9) |
Increase in liability for mileage credits issued | 285 |  |  | 259 |
Total Deferred Revenue balance at March 31 | $ | 2,543 |  |  | $ | 2,432 |

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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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