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Revenue (Tables) | 6 Months Ended
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Jun. 30, 2022
Revenue from Contract with Customer [Abstract] |
Disaggregation of Passenger Revenue | The following table provides the components of Passenger revenue recognized for the three and six months ended June 30, 2022 and 2021:
| Three months ended June 30, |  | Six months ended June 30,
(in millions) | 2022 |  | 2021 |  | 2022 |  | 2021
Passenger non-loyalty | $ | 5,118 |  |  | $ | 2,875 |  |  | $ | 8,482 |  |  | $ | 4,230 |
Passenger loyalty - air transportation | 821 |  |  | 549 |  |  | 1,445 |  |  | 826 |
Passenger ancillary sold separately | 180 |  |  | 145 |  |  | 327 |  |  | 226 |
Total passenger revenues | $ | 6,119 |  |  | $ | 3,569 |  |  | $ | 10,254 |  |  | $ | 5,282 |
Rollforward of Air Traffic Liability | As of June 30, 2022, and December 31, 2021, the components of Air traffic liability, including contract liabilities based on tickets sold and unused flight credits available to the Customer, both of which are net of recorded breakage, and loyalty points available for redemption, within the unaudited Condensed Consolidated Balance Sheet were as follows:
| Balance as of
(in millions) | June 30, 2022 |  | December 31, 2021
Air traffic liability - passenger travel and ancillary passenger services | $ | 3,634 |  |  | $ | 2,936 |
Air traffic liability - loyalty program | 4,884 |  |  | 4,789 |
Total Air traffic liability | $ | 8,518 |  |  | $ | 7,725 |
Rollforwards of the Company's Air traffic liability - loyalty program for the three and six months ended June 30, 2022 and 2021 were as follows (in millions):
| Three months ended June 30, |  | Six months ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Air traffic liability - loyalty program - beginning balance | $ | 4,884 |  |  | $ | 4,623 |  |  | $ | 4,789 |  |  | $ | 4,447 |
Amounts deferred associated with points awarded | 842 |  |  | 656 |  |  | 1,579 |  |  | 1,121 |
Revenue recognized from points redeemed - Passenger | (821) |  |  | (549) |  |  | (1,445) |  |  | (826) |
Revenue recognized from points redeemed - Other | (21) |  |  | (11) |  |  | (39) |  |  | (23) |
Air traffic liability - loyalty program - ending balance | $ | 4,884 |  |  | $ | 4,719 |  |  | $ | 4,884 |  |  | $ | 4,719 |
Rollforwards of the amounts included in Air traffic liability as of June 30, 2022 and 2021 were as follows (in millions):
| Air traffic liability
Balance at December 31, 2021 | $ | 7,725 |
Current period sales (passenger travel, ancillary services, flight loyalty, and partner loyalty) | 11,086 |
Revenue from amounts included in contract liability opening balances | (3,029) |
Revenue from current period sales | (7,264) |
Balance at June 30, 2022 | $ | 8,518 |
| Air traffic liability
Balance at December 31, 2020 | $ | 7,133 |
Current period sales (passenger travel, ancillary services, flight loyalty, and partner loyalty) | 6,851 |
Revenue from amounts included in contract liability opening balances | (1,600) |
Revenue from current period sales | (3,705) |
Balance at June 30, 2021 | $ | 8,679 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
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