v2.4.0.6

Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2011
Stockholders' Equity [Abstract] |
Schedule Of Stock Repurchases |
| 2011 | 2010
| Amount | Shares | Per Share | Amount | Shares | Per Share
Repurchases | $ 2,299 | 30.9 | $ 74.49 | $ 1,201 | 18.3 | $ 65.58

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