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Purchases of Equity Securities by the Issuer and Affiliated Purchasers (Tables) | 12 Months Ended
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Dec. 31, 2012
Purchases of Equity Securities by the Issuer and Affiliated Purchasers [Abstract] |
Summary of shares repurchased |
Period |  | Total number of shares purchased |  |  | Average price paid per Share (EUR) |  |  | Total number of shares purchased as part of publicly announced plans or programs |  |  | Maximum value of shares that may yet be purchased under the program 1 (EUR) |  |  | Maximum number of shares that may yet be purchased under the program2 |
January 20 - 31, 2012 |  |  | 2,132,366 |  |  |  | 32.65 |  |  |  | 2,132,366 |  |  |  | 360,369,363 |  |  |  | 2,200,000 |
February 1 - 28, 2012 |  |  | 1,025,407 |  |  |  | 34.71 |  |  |  | 3,157,773 |  |  |  | 324,780,615 |  |  |  | 2,200,000 |
March 1 - 31, 2012 |  |  | 949,726 |  |  |  | 35.76 |  |  |  | 4,107,499 |  |  |  | 290,820,741 |  |  |  | 2,200,000 |
April 1 - 30, 2012 |  |  | 654,169 |  |  |  | 37.18 |  |  |  | 4,761,668 |  |  |  | 266,501,698 |  |  |  | 2,200,000 |
May 2 - 31, 2012 |  |  | 1,219,480 |  |  |  | 36.88 |  |  |  | 5,981,148 |  |  |  | 221,530,029 |  |  |  | 2,200,000 |
June 1 - 30, 2012 |  |  | 1,133,550 |  |  |  | 38.61 |  |  |  | 7,114,698 |  |  |  | 177,764,616 |  |  |  | 2,200,000 |
July 1 - 29, 2012 |  |  | 428,000 |  |  |  | 40.65 |  |  |  | 7,542,698 |  |  |  | 160,366,940 |  |  |  | 2,200,000 |
August 1 - 31, 2012 |  |  | - |  |  |  | - |  |  |  | 7,542,698 |  |  |  | 160,366,940 |  |  |  | 2,200,000 |
September 1 -30, 2012 |  |  | - |  |  |  | - |  |  |  | 7,542,698 |  |  |  | 160,366,940 |  |  |  | 2,200,000 |
October 3 - 31, 2012 |  |  | 1,153,112 |  |  |  | 41.86 |  |  |  | 8,695,810 |  |  |  | 112,099,413 |  |  |  | 2,200,000 |
November 1 - 30, 2012 |  |  | 3,240,099 |  |  |  | 44.10 |  |  |  | 11,935,909 |  |  |  | - |  |  |  | 1,542,149 |
December 1 - 31, 2012 |  |  | 1,542,149 |  |  |  | 48.24 |  |  |  | 13,478,058 |  |  |  | - |  |  |  | - |
Total |  |  | 13,478,058 |  |  |  | 39.71 |  |  |  |  |  |  |  |  |  |  |  |  |
1 | Program to purchase shares up to a maximum amount of EUR 1,130 million. We have or will cancel these shares.
2 | Program to purchase up to 2.2 million shares for the purpose of covering outstanding employee stock and stock option plans

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- Definition A share repurchase program is a combination of transactions that permits an entity to purchase a targeted number of shares immediately with the final purchase price of those shares determined by an average market price over a fixed period of time. + References No definition available. + Details
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