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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2018
Revenue from Contract with Customer [Abstract] |
Summary of Roll Forward of Frequent Flyer Deferred Revenue | The table below presents a roll forward of Frequent flyer deferred revenue (in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Total Frequent flyer deferred revenue - beginning balance | $ | 4,989 |  |  | $ | 4,891 |  |  | $ | 4,783 |  |  | $ | 4,889 |
Total miles awarded | 616 |  |  | 525 |  |  | 1,826 |  |  | 1,544 |
Travel miles redeemed (Passenger revenue) | (580 | ) |  | (556 | ) |  | (1,508 | ) |  | (1,489 | )
Non-travel miles redeemed (Other operating revenue) | (38 | ) |  | (42 | ) |  | (114 | ) |  | (126 | )
Total Frequent flyer deferred revenue - ending balance | $ | 4,987 |  |  | $ | 4,818 |  |  | $ | 4,987 |  |  | $ | 4,818 |
Summary of Passenger Revenue by Geographic Region and by Mainline Versus Regional | The following table presents passenger revenue by geographic region for the three and nine months ended September 30 (in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Domestic | $ | 6,253 |  |  | $ | 5,443 |  |  | $ | 17,403 |  |  | $ | 15,752 |
Atlantic | 1,933 |  |  | 1,724 |  |  | 5,009 |  |  | 4,456 |
Pacific | 1,163 |  |  | 1,125 |  |  | 3,335 |  |  | 3,242 |
Latin America | 771 |  |  | 777 |  |  | 2,403 |  |  | 2,423 |
International | 3,867 |  |  | 3,626 |  |  | 10,747 |  |  | 10,121 |
Consolidated | $ | 10,120 |  |  | $ | 9,069 |  |  | $ | 28,150 |  |  | $ | 25,873 |

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- Definition Tabular disclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765 + 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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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