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Revenue - Air Traffic Liability - Loyalty Program Rollforward (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Movement in Deferred Revenue |  |
Air traffic liability - loyalty program - beginning balance | $ 3,011 | $ 2,667
Amounts deferred associated with points awarded | 2,941 | 2,717
Revenue recognized from points redeemed - Passenger | (2,487) | (2,307)
Revenue recognized from points redeemed - Other | (80) | (66)
Air traffic liability - loyalty program - ending balance | $ 3,385 | $ 3,011

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- Definition Other Revenue Recognized From Points Redeemed + References No definition available. + Details
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- Definition Passenger Revenue Recognized From Points Redeemed + References No definition available. + Details
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- Definition Revenue Amounts Deferred Associated With Points Awarded + References No definition available. + Details
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- Definition Amount of deferred income and obligation to transfer product and 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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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