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REVENUE RECOGNITION - Loyalty Program Liability (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Loyalty Program |  |  |
Miles earned | $ 3,419 | $ 2,238 | $ 1,437
Travel miles redeemed | (2,898) | (1,786) | (935)
Non-travel miles redeemed | (198) | (75) | (48)
Loyalty program |  |  |
Loyalty Program |  |  |
Current and noncurrent deferred revenue, beginning | 7,559 | 7,182 | 6,728
Current and noncurrent deferred revenue, ending | $ 7,882 | $ 7,559 | $ 7,182

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- Definition Loyalty Program Liability, Mileage Credits Earned + References No definition available. + Details
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- Definition Loyalty Program Liability, Non-Travel Mileage Credits Redeemed + References No definition available. + Details
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- Definition Loyalty Program Liability, Travel Mileage Credits Redeemed + 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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- Details
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