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Segment Information | 12 Months Ended
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Dec. 31, 2018
Segment Information |
Segment Information | Note 17. Segment Information We have one reportable segment – metals service centers. All of our recent acquisitions were metals service centers and did not result in new reportable segments. Although a variety of products or services are sold at our various locations, in total, sales were comprised of the following in each of the three years ended December 31:
| 2018 |  | 2017 |  | 2016 |
Carbon steel | 53 | % | 52 | % | 52 | %
Aluminum | 19 | % | 19 | % | 20 | %
Stainless steel | 14 | % | 14 | % | 14 | %
Alloy | 6 | % | 6 | % | 5 | %
Toll processing and logistics | 4 | % | 4 | % | 4 | %
Other | 4 | % | 5 | % | 5 | %
Total | 100 | % | 100 | % | 100 | %
The following table summarizes consolidated financial information of our operations by geographic location based on where sales originated from:
| United States |  | Foreign Countries |  | Total
| (in millions)
Year Ended December 31, 2018 |  |  |  |  |  |  |  |
Net sales | $ | 10,638.4 |  | $ | 896.1 |  | $ | 11,534.5
Long-lived assets |  | 4,431.8 |  |  | 328.1 |  |  | 4,759.9
Year Ended December 31, 2017 |  |  |  |  |  |  |  |
Net sales |  | 8,847.3 |  |  | 873.7 |  |  | 9,721.0
Long-lived assets |  | 4,353.7 |  |  | 346.0 |  |  | 4,699.7
Year Ended December 31, 2016 |  |  |  |  |  |  |  |
Net sales |  | 7,867.3 |  |  | 746.1 |  |  | 8,613.4
Long-lived assets |  | 4,385.2 |  |  | 337.6 |  |  | 4,722.8

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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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