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Revenue Recognition - Contract Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Revenue from Contract with Customer [Abstract] |  |
Air traffic liability - passenger travel | $ 1,291 | $ 1,323
Air traffic liability - loyalty program (air transportation) | 1,000 | 891
Deferred revenue | 530 | 613
Total | $ 2,821 | $ 2,827

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- Definition Air Traffic Liability - Loyalty Program (Air Transportation) + References No definition available. + Details
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- Definition Air Traffic Liability - Passenger Travel + References No definition available. + Details
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- Definition Other Deferred Revenue + References No definition available. + Details
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044 + Details
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