Equity Equity, Textuals (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended		6 Months Ended
	May 09, 2012	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Dividends declared per share	$ 0.06	$ 0	$ 0.05	$ 0	$ 0.1
Dividends, Common Stock, Cash				$ 12.9
Treasury Stock, Shares, Acquired				9,211,638
Treasury Stock, Value, Acquired, Par Value Method				102.8
Treasury Stock Acquired, Average Cost Per Share				$ 11.16
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 117.2