Stockholders' Equity (Details Textuals) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended	30 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
Stockholders' Equity Note [Abstract]
Common Stock, Dividends, Per Share, Declared		$ 0.0625
Payments of Ordinary Dividends, Common Stock		$ 21.7
Treasury Stock, Shares, Acquired		12.4	60.0
Treasury Stock, Value, Acquired, Cost Method		200.4	940.0
Treasury Stock Acquired, Average Cost Per Share			$ 15.68
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 221.9