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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Segment Information |
Schedule of sales, by products or services |
| 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 | %
Summary of the Company's 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 Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599 + Details
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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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