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Shareholders' Equity
6 Months Ended
Jun. 30, 2014
Stockholders' Equity Note [Abstract]  
Shareholders' Equity
Shareholders’ equity

During the six months ended June 30, 2014, we repurchased 5.0 million shares under our repurchase authorization for a total of $97.6 million. Such repurchases are reflected as reductions of common stock and retained earnings. At June 30, 2014, we had remaining authorization to repurchase $136.7 million of common shares.

Under our stock-based compensation plans, we accept shares as payment under certain conditions related to stock option exercises and vesting of shares, generally related to the payment of minimum tax obligations. During the six months ended June 30, 2014 and 2013, employees surrendered shares valued at $6.1 million and $6.4 million, respectively, under these plans. Such share transactions are excluded from the above noted stock repurchase authorization.