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Revenue (Tables) | 6 Months Ended
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Jun. 30, 2019
Revenue from Contract with Customer [Abstract] |
Operating Revenue by Geographic Region | The following table presents operating revenue by geographic region (in millions):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Domestic (U.S. and Canada) | $ | 7,087 |  |  | $ | 6,689 |  |  | $ | 12,962 |  |  | $ | 12,165 |
Atlantic | 2,066 |  |  | 1,965 |  |  | 3,524 |  |  | 3,354 |
Pacific | 1,306 |  |  | 1,285 |  |  | 2,587 |  |  | 2,516 |
Latin America | 943 |  |  | 838 |  |  | 1,918 |  |  | 1,774 |
Total | $ | 11,402 |  |  | $ | 10,777 |  |  | $ | 20,991 |  |  | $ | 19,809 |
Roll Forward of Frequent Flyer Deferred Revenue | The table below presents a roll forward of Frequent flyer deferred revenue (in millions):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Total Frequent flyer deferred revenue - beginning balance | $ | 5,138 |  |  | $ | 4,937 |  |  | $ | 5,005 |  |  | $ | 4,783 |
Miles awarded | 682 |  |  | 607 |  |  | 1,289 |  |  | 1,210 |
Travel miles redeemed (Passenger revenue) | (589 | ) |  | (519 | ) |  | (1,027 | ) |  | (928 | )
Non-travel miles redeemed (Other operating revenue) | (33 | ) |  | (36 | ) |  | (69 | ) |  | (76 | )
Total Frequent flyer deferred revenue - ending balance | $ | 5,198 |  |  | $ | 4,989 |  |  | $ | 5,198 |  |  | $ | 4,989 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + 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 http://asc.fasb.org/extlink&oid=118956577&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 http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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