Common And Preferred Stock (Details) (USD $) In Millions, except Per Share data	Sep. 30, 2011	Dec. 31, 2010
Common And Preferred Stock [Abstract]
Common stock, shares authorized	150	150
Common stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5	5
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares issued	0	0