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Stock Repurchase Program	12 Months Ended
Stock Repurchase Program	Dec. 31, 2013
Equity [Abstract]
Stock Repurchase Program	Stock Repurchase Program Through December 31, 2011, the Board of Directors had authorized a total of $950.0 million for the repurchase from time to time of outstanding common stock from shareholders (the “Stock Repurchase Program”). A total of approximately $846.2 million had been expended in the Stock Repurchase Program from its inception through December 31, 2013. There is no expiration date on the Stock Repurchase Program. The Company has repurchased from shareholders 27,945,611 shares and executives surrendered a total of 2,651,238 shares as payment for strike prices and taxes due on exercised stock options and on vested restricted stock units, for a total of 30,596,849 acquired shares from inception of the Stock Repurchase Program through December 31, 2013. During 2013, 2012 and 2011, executives surrendered 3,378, 9,529 and 179,221 shares, respectively, as payment for strike prices and taxes due on exercised stock options and vested restricted stock. On December 31, 2011, the Company canceled and retired 30,497,699 shares of treasury stock resulting in an allocation based upon weighted average issuance price which reduced common stock by $51.1 million and retained earnings by $885.1 million.