Share Repurchase Program (Details Textuals) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended	9 Months Ended	24 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
Stockholders' Equity Note [Abstract]
Treasury Stock, Shares, Acquired		6.7	11.7	42.8
Treasury Stock, Value, Acquired, Cost Method		$ 114.8	$ 200.0	$ 661.9
Treasury Stock Acquired, Average Cost Per Share				$ 15.48
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 109.3