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Shareholders' Equity and Stock-Based Compensation (Details 7) (USD $) In Millions, except Share data, unless otherwise specified | 0 Months Ended | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 18, 2013 | Feb. 16, 2012 | Jan. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Common stock repurchased (in shares) |  |  |  | 3,493,000 | 3,606,000 |
Total cash consideration paid for common stock repurchased |  |  |  | $ 260.2 | $ 245.6 |
Preferred Stock |  |  |  |  |  |
Authorized no par value preferred stock (in shares) |  |  |  | 3,000,000 | 3,000,000 | 3,000,000
Common Stock In Treasury |  |  |  |  |  |
Authorized repurchase amount under the written trading plan | 500.0 | 350.0 |  |  |  |
Common stock repurchased (in shares) | 115,000 |  | 1,514,000 | 3,493,000 | 3,606,000 |
Total cash consideration paid for common stock repurchased | 11.2 |  | 104.4 | 144.6 | 245.6 |
Common Stock in Treasury |  |  |  |  |  |
Decrease in stock by the settlement of restricted stock units |  |  |  | 14.2 | 6.1 | 12.8
Increase in the stock for common stock surrendered by recipients of restricted stock as a means of funding minimum income tax withholding |  |  |  | $ 11.0 | $ 1.8 | $ 7.0

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