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Business, Product and Geographical Area Information and Concentration of Risk (Tables) | 12 Months Ended
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Dec. 31, 2023
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, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Net sales: |  |  |  |  |  |  |  |  |
Aero/HS products |  | $ | 899.3 |  |  | $ | 676.1 |  |  | $ | 533.7 |
Packaging |  |  | 1,315.2 |  |  |  | 1,585.3 |  |  |  | 1,119.3 |
GE products |  |  | 596.5 |  |  |  | 883.8 |  |  |  | 706.1 |
Automotive Extrusions |  |  | 254.9 |  |  |  | 254.8 |  |  |  | 225.0 |
Other products |  |  | 21.1 |  |  |  | 27.9 |  |  |  | 37.9 |
Total net sales |  | $ | 3,087.0 |  |  | $ | 3,427.9 |  |  | $ | 2,622.0 |
Timing of revenue recognition: |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 2,394.8 |  |  | $ | 2,782.9 |  |  | $ | 2,067.9 |
Products transferred over time |  |  | 692.2 |  |  |  | 645.0 |  |  |  | 554.1 |
Total net sales |  | $ | 3,087.0 |  |  | $ | 3,427.9 |  |  | $ | 2,622.0 |
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, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Net sales to unaffiliated customers: |  |  |  |  |  |  |  |  |
Domestic |  | $ | 2,986.0 |  |  | $ | 3,328.2 |  |  | $ | 2,545.0 |
Foreign 1 |  |  | 101.0 |  |  |  | 99.7 |  |  |  | 77.0 |
Total net sales |  | $ | 3,087.0 |  |  | $ | 3,427.9 |  |  | $ | 2,622.0 |
Income taxes paid: |  |  |  |  |  |  |  |  |
Domestic |  | $ | 0.3 |  |  | $ | 3.1 |  |  | $ | 4.5 |
Foreign |  |  | 0.2 |  |  |  | 3.2 |  |  |  | 1.1 |
Total income taxes paid |  | $ | 0.5 |  |  | $ | 6.3 |  |  | $ | 5.6 |
|  | As of December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Long-lived assets: 2 |  |  |  |  |  |  |  |  |
Domestic |  | $ | 1,025.3 |  |  | $ | 984.8 |  |  | $ | 925.3 |
Foreign 1 |  |  | 26.8 |  |  |  | 28.4 |  |  |  | 29.9 |
Total long-lived assets |  | $ | 1,052.1 |  |  | $ | 1,013.2 |  |  | $ | 955.2 |
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, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Percentage of Net sales: |  |  |  |  |  |  |  |  |
Export sales |  |  | 10 | % |  |  | 10 | % |  |  | 10 | %
Percentage of total annual primary aluminum supply (lbs): |  |  |  |  |  |  |  |  |
Supply from our top five major suppliers |  |  | 83 | % |  |  | 81 | % |  |  | 78 | %
Supply from our largest supplier |  |  | 37 | % |  |  | 48 | % |  |  | 47 | %
Supply from our second and third largest suppliers combined |  |  | 28 | % |  |  | 20 | % |  |  | 20 | %

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