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Inventories (Details) (EUR €) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Inventories |  |  |
Raw materials | € 307,315,000 | € 258,712,000 |
Work-in-process | 1,074,042,000 | 1,026,872,000 |
Finished products | 742,979,000 | 532,556,000 |
Inventories, gross | 2,124,336,000 | 1,818,140,000 |
Allowance for obsolescence and /or lower market values | (267,366,000) | (193,513,000) | (189,235,000)
Inventories, net | 1,856,970,000 | 1,624,627,000 |
Allowance for obsolescence and /or lower market values |  |  |
Beginning balance | (193,513,000) | (189,235,000) |
Addition for the year | 130,911,000 | 60,300,000 | 55,691,000
Effect of changes in exchange rates | 1,009,000 | (883,000) |
Utilization of the provision | 56,049,000 | 56,905,000 |
Allowance for obsolescence and /or lower market values | (267,366,000) | (193,513,000) | (189,235,000)
Inventories (Textual) [Abstract] |  |  |
Addition obsolete inventory allowance | 130,911,000 | 60,300,000 | 55,691,000
Profit on sale of inventories previously written down | 2,300,000 | 4,500,000 |
Write downs to lower of cost or market value | 43,500,000 | 17,000,000 |
Cost of Sales [Member] |  |  |
Allowance for obsolescence and /or lower market values |  |  |
Addition for the year | 125,200,000 | 60,000,000 |
Inventories (Textual) [Abstract] |  |  |
Addition obsolete inventory allowance | 125,200,000 | 60,000,000 |
Research and Development Costs [Member] |  |  |
Allowance for obsolescence and /or lower market values |  |  |
Addition for the year | 5,700,000 | 300,000 |
Inventories (Textual) [Abstract] |  |  |
Addition obsolete inventory allowance | € 5,700,000 | € 300,000 |

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