The Company is organized into three operating and reporting segments consisting of the Power Solutions Group, the Analog Solutions Group and the Intelligent Sensing Group. The Company does not allocate income taxes or interest expense to its operating segments as the operating segments are principally evaluated on revenue and gross profit. Additionally, restructuring, asset impairments and other, net and certain other manufacturing and operating expenses, which include corporate research and development costs, unallocated inventory reserves and miscellaneous nonrecurring expenses, are not allocated to any segment. In addition to the operating and reporting segments, the Company also operates global operations, sales and marketing, information systems, finance and administration groups that are led by vice presidents who report to the Chief Executive Officer. A portion of the expenses of these groups are allocated to the segments based on specific and general criteria and are included in the segment results. Revenue and gross profit for the Companys operating and reporting segments are as follows (in millions): Power Solutions Group Analog Solutions Group Intelligent Sensing Group Total For year ended December 31, 2018: Revenue from external customers $ 3,038.2 $ 2,071.2 $ 768.9 $ 5,878.3 Segment gross profit 1,110.1 878.3 317.1 2,305.5 For year ended December 31, 2017: Revenue from external customers $ 2,819.3 $ 1,950.9 $ 772.9 $ 5,543.1 Segment gross profit 959.8 817.8 302.6 2,080.2 For year ended December 31, 2016: Revenue from external customers $ 1,708.6 $ 1,481.5 $ 716.8 $ 3,906.9 Segment gross profit 567.5 590.2 237.7 1,395.4 Gross profit is exclusive of the amortization of acquisition-related intangible assets. Depreciation expense is included in segment gross profit. Reconciliations of segment gross profit to consolidated gross profit are as follows (in millions): Year Ended December 31, 2018 2017 2016 Gross profit for reportable segments $ 2,305.5 $ 2,080.2 $ 1,395.4 Less: unallocated manufacturing costs (66.8 ) (44.6 ) (94.9 ) Consolidated gross profit $ 2,238.7 $ 2,035.6 $ 1,300.5 Revenue for the Company's operating and reporting segments disaggregated into geographic locations and sales channels are as follows (in millions): Year Ended December 31, 2018 Power Solutions Group Analog Solutions Group Intelligent Sensing Group Total Geographic Location Singapore $ 1,086.6 $ 704.2 $ 164.2 $ 1,955.0 Hong Kong 847.9 496.5 144.7 1,489.1 United Kingdom 488.5 319.8 138.2 946.5 United States 398.5 339.2 125.0 862.7 Other 216.7 211.5 196.8 625.0 Total $ 3,038.2 $ 2,071.2 $ 768.9 $ 5,878.3 Sales Channel Distributors $ 2,011.1 $ 1,066.4 $ 464.2 $ 3,541.7 OEM 846.8 860.7 263.4 1,970.9 Electronic Manufacturing Service Providers 180.3 144.1 41.3 365.7 Total $ 3,038.2 $ 2,071.2 $ 768.9 $ 5,878.3 The Company operates in various geographic locations. Sales to unaffiliated customers have little correlation with the location of manufacturers. It is, therefore, not meaningful to present operating profit by geographical location. The Company's wafer manufacturing facilities fabricate ICs for all business units, as necessary, and their operating costs are reflected in the segments' cost of revenue on the basis of product costs. Because operating segments are generally defined by the products they design and sell, they do not make sales to each other. The Company does not discretely allocate assets to its operating segments, nor does management evaluate operating segments using discrete asset information. The Companys consolidated assets are not specifically ascribed to its individual reporting segments. Rather, assets used in operations are generally shared across the Companys operating and reporting segments. Property, plant and equipment, net by geographic location, are summarized as follows (in millions): As of December 31, 2018 2017 United States $ 616.9 $ 547.9 Philippines 474.5 439.5 Korea 383.1 380.5 China 248.4 246.0 Malaysia 229.1 230.0 Other 597.6 435.2 $ 2,549.6 $ 2,279.1 The following table illustrates the product technologies under each of the Company's reportable segments based on the Company's operating strategy. Because many products are sold into different end-markets, the total revenue reported for a segment is not indicative of actual sales in the end-market associated with that segment, but rather is the sum of the revenue from the product lines assigned to that segment. These segments represent the Company's view of the business and as such are used to evaluate progress of major initiatives and allocation of resources. Power Solutions Group Analog Solutions Group Intelligent Sensing Group Analog products Analog products LSI products Discrete products ASIC products Sensors HD products ECL products IPM products Foundry products / services Memory products LSI products PIM products Standard logic products Sensors TMOS products Standard logic products TMOS products WBG products