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SEGMENTS AND RELATED INFORMATION | 12 Months Ended
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Dec. 31, 2017
Segment Reporting [Abstract] |
SEGMENTS AND RELATED INFORMATION | 14. SEGMENTS AND RELATED INFORMATION WESCO provides distribution of product and services through its four operating segments, which have been aggregated as one reportable segment. WESCO has approximately 230,000 unique product stock keeping units and markets more than 1,000,000 products for customers. There were no material amounts of sales or transfers among geographic areas and no material amounts of export sales. WESCO attributes revenues from external customers to individual countries on the basis of the point of sale. The following table sets forth information about WESCO by geographic area:
| Net Sales Year Ended December 31, |  | Long-Lived Assets December 31,
| 2017 |  | 2016 |  | 2015 |  | 2017 |  | 2016 |  | 2015
(In thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States | $ | 5,775,988 |  |  | 75 | % |  | $ | 5,635,803 |  |  | 77 | % |  | $ | 5,665,962 |  |  | 75 | % |  | $ | 95,851 |  |  | $ | 123,465 |  |  | $ | 157,570 |
Canada | 1,521,378 |  |  | 20 | % |  | 1,394,657 |  |  | 19 | % |  | 1,533,705 |  |  | 21 | % |  | 56,591 |  |  | 60,372 |  |  | 63,088 |
Mexico | 77,280 |  |  | 1 | % |  | 62,430 |  |  | 1 | % |  | 70,048 |  |  | 1 | % |  | 262 |  |  | 227 |  |  | 332 |
Subtotal North American Operations | 7,374,646 |  |  |  |  | 7,092,890 |  |  |  |  | 7,269,715 |  |  |  |  | 152,704 |  |  | 184,064 |  |  | 220,990 |
Other International | 304,375 |  |  | 4 | % |  | 243,127 |  |  | 3 | % |  | 248,772 |  |  | 3 | % |  | 3,741 |  |  | 4,583 |  |  | 5,369 |
Total | $ | 7,679,021 |  |  |  |  | $ | 7,336,017 |  |  |  |  | $ | 7,518,487 |  |  |  |  | $ | 156,445 |  |  | $ | 188,647 |  |  | $ | 226,359 |
The following table sets forth sales information about WESCO’s sales by product category:
Year Ended December 31, | 2017 |  | 2016 |  | 2015
(percentages based on total sales) |  |  |  |  |
General Supplies | 40% |  | 40% |  | 40%
Wire, Cable and Conduit | 15% |  | 14% |  | 15%
Communications and Security | 15% |  | 15% |  | 15%
Electrical Distribution and Controls | 10% |  | 11% |  | 11%
Lighting and Sustainability | 12% |  | 12% |  | 10%
Automation, Controls and Motors | 8% |  | 8% |  | 9%

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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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