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SEGMENT INFORMATION | 12 Months Ended
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Dec. 31, 2017
SEGMENT INFORMATION | NOTE 15 - SEGMENT INFORMATION Operating segments are defined as components of an enterprise with separate financial information, which are evaluated regularly by the chief operating decision maker and are used in resource allocation and performance assessments. The Company deploys its aircraft across its route network through a single route scheduling system to maximize its value. When making resource allocation decisions, the Company’s chief operating decision maker evaluates flight profitability data, which considers aircraft type and route economics. The Company’s chief operating decision maker makes resource allocation decisions to maximize the Company’s consolidated financial results. Managing the Company as one segment allows management the opportunity to maximize the value of its route network. The Company’s operating revenue by principal geographic region (as defined by the U.S. Department of Transportation) for the years ended December 31 is presented in the table below (in millions):
|  | 2017 |  |  | 2016 |  |  | 2015 |
Domestic (U.S. and Canada) |  | $ | 23,131 |  |  | $ | 22,202 |  |  | $ | 21,931 |
Pacific |  |  | 4,898 |  |  |  | 4,959 |  |  |  | 5,498 |
Atlantic |  |  | 6,285 |  |  |  | 6,157 |  |  |  | 7,068 |
Latin America |  |  | 3,422 |  |  |  | 3,238 |  |  |  | 3,367 |
Total |  | $ | 37,736 |  |  | $ | 36,556 |  |  | $ | 37,864 |
The Company attributes revenue among the geographic areas based upon the origin and destination of each flight segment. The Company’s operations involve an insignificant level of dedicated revenue-producing assets in geographic regions as the overwhelming majority of the Company’s revenue producing assets (primarily U.S. registered aircraft) can be deployed in any of its geographic regions.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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