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Business, Product and Geographical Area Information and Concentration of Risk (Tables) | 12 Months Ended
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Dec. 31, 2018
Segment Reporting [Abstract] |
Schedule of net sales by end market segment applications | Net sales by end market applications and by timing of control transfer for each period presented were as follows (in millions of dollars):
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Net sales: |  |  |  |  |
Aero/HS products | $ | 739.4 |  |  | $ | 653.7 |  |  | $ | 675.4 |
Automotive Extrusions | 239.3 |  |  | 217.3 |  |  | 188.8 |
GE products | 546.0 |  |  | 476.2 |  |  | 420.1 |
Other products | 61.2 |  |  | 50.3 |  |  | 46.3 |
Total net sales | $ | 1,585.9 |  |  | $ | 1,397.5 |  |  | $ | 1,330.6 |
Timing of revenue recognition – Note 11: |  |  |  |  |
Products transferred at a point in time | $ | 543.0 |  |  | n/a |  |  | n/a |
Products transferred over time | 1,042.9 |  |  | n/a |  |  | n/a |
Total net sales | $ | 1,585.9 |  |  |  |  |
Schedule of net sales, income taxes paid, and long-lived assets, by geographical area | Geographic information for net sales based on country of origin, income taxes paid and long-lived assets were as follows (in millions of dollars):
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Net sales to unaffiliated customers: |  |  |  |  |
Domestic | $ | 1,509.6 |  |  | $ | 1,337.3 |  |  | $ | 1,278.6 |
Foreign 1 | 76.3 |  |  | 60.2 |  |  | 52.0 |
Total net sales | $ | 1,585.9 |  |  | $ | 1,397.5 |  |  | $ | 1,330.6 |
Income taxes paid: |  |  |  |  |
Domestic | $ | 1.6 |  |  | $ | 1.2 |  |  | $ | 0.7 |
Foreign | 2.0 |  |  | 0.1 |  |  | 0.5 |
Total income taxes paid | $ | 3.6 |  |  | $ | 1.3 |  |  | $ | 1.2 |
| December 31,
| 2018 |  | 2017 |  | 2016
Long-lived assets:2 |  |  |  |  |
Domestic | $ | 581.7 |  |  | $ | 541.2 |  |  | $ | 499.5 |
Foreign 1 | 30.1 |  |  | 30.2 |  |  | 31.4 |
Total long-lived assets | $ | 611.8 |  |  | $ | 571.4 |  |  | $ | 530.9 |
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1. | Foreign reflects our London, Ontario production facility.
2. | Long-lived assets represent Property, plant and equipment, net.
Schedules of Concentration of Risk, by Risk Factor | Information about export sales and primary aluminum supply from our major suppliers were as follows for the periods presented:
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Percentage of Net sales: |  |  |  |  |
Export sales | 15 | % |  | 18 | % |  | 19 | %
Percentage of total annual primary aluminum supply (lbs): |  |  |  |  |
Supply from our top five major suppliers | 81 | % |  | 85 | % |  | 84 | %
Supply from our largest supplier | 22 | % |  | 36 | % |  | 32 | %
Supply from our second and third largest suppliers combined | 38 | % |  | 33 | % |  | 32 | %

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599 + Details
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