SEGMENTS AND RELATED INFORMATION

12 Months Ended

Dec. 31, 2017

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%