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Business, Product and Geographical Area Information and Concentration of Risk (Tables) | 12 Months Ended
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Dec. 31, 2020
Segment Reporting [Abstract] |
Net Sales by End Market Segment Applications | The following table presents Net sales by end market applications and by timing of control transfer (in millions of dollars):
|  | Year Ended December 31, |  |
|  | 2020 |  |  | 2019 |  |  | 2018 |  |
Net sales: |  |  |  |  |  |  |  |  |  |  |  |  |
Aero/HS products |  | $ | 537.9 |  |  | $ | 803.2 |  |  | $ | 739.4 |  |
Automotive Extrusions |  |  | 161.4 |  |  |  | 190.5 |  |  |  | 239.3 |  |
GE products |  |  | 458.8 |  |  |  | 480.1 |  |  |  | 546.0 |  |
Other products |  |  | 14.6 |  |  |  | 40.3 |  |  |  | 61.2 |  |
Total net sales |  | $ | 1,172.7 |  |  | $ | 1,514.1 |  |  | $ | 1,585.9 |  |
Timing of revenue recognition: |  |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 690.9 |  |  | $ | 866.9 |  |  | $ | 912.7 |  | 1
Products transferred over time |  |  | 481.8 |  |  |  | 647.2 |  |  |  | 673.2 |  | 1
Total net sales |  | $ | 1,172.7 |  |  | $ | 1,514.1 |  |  | $ | 1,585.9 |  |
1. | As corrected from $543.0 million of products transferred at a point in time and $1,042.9 million of products transferred over time.
Schedule of Net Sales, Income Taxes Paid, and Long-lived Assets, by Geographical Area | The following table presents geographic information for net sales based on country of origin, income taxes paid and long-lived assets (in millions of dollars):
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Net sales to unaffiliated customers: |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  | $ | 1,126.8 |  |  | $ | 1,461.4 |  |  | $ | 1,509.6 |
Foreign1 |  |  | 45.9 |  |  |  | 52.7 |  |  |  | 76.3 |
Total net sales |  | $ | 1,172.7 |  |  | $ | 1,514.1 |  |  | $ | 1,585.9 |
Income taxes paid: |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  | $ | 0.7 |  |  | $ | 3.5 |  |  | $ | 1.6 |
Foreign |  |  | 0.3 |  |  |  | 2.0 |  |  |  | 2.0 |
Total income taxes paid |  | $ | 1.0 |  |  | $ | 5.5 |  |  | $ | 3.6 |
|  | As of December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Long-lived assets:2 |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  | $ | 597.5 |  |  | $ | 592.9 |  |  | $ | 581.7 |
Foreign1 |  |  | 29.7 |  |  |  | 29.1 |  |  |  | 30.1 |
Total long-lived assets |  | $ | 627.2 |  |  | $ | 622.0 |  |  | $ | 611.8 |
1. | Foreign reflects our London, Ontario production facility.
2. | Long-lived assets represent Property, plant and equipment, net.
Schedule of Export Sales and Primary Aluminum Supply from Major Suppliers | The following table presents information about export sales and primary aluminum supply from our major suppliers:
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Percentage of Net sales: |  |  |  |  |  |  |  |  |  |  |  |
Export sales |  |  | 10 | % |  |  | 14 | % |  |  | 15 | %
Percentage of total annual primary aluminum supply (lbs): |  |  |  |  |  |  |  |  |  |  |  |
Supply from our top five major suppliers |  |  | 72 | % |  |  | 74 | % |  |  | 81 | %
Supply from our largest supplier |  |  | 21 | % |  |  | 22 | % |  |  | 22 | %
Supply from our second and third largest suppliers combined |  |  | 32 | % |  |  | 32 | % |  |  | 38 | %

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