Stockholders' Equity (Stock Options Granted) (Details) (USD $)	80 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 April 16, 2013 [Member]	Dec. 31, 2013 April 17, 2012 [Member]	Dec. 31, 2013 April 19, 2011 [Member]	Dec. 31, 2013 April 20, 2010 [Member]	Dec. 31, 2013 April 21, 2009 [Member]	Dec. 31, 2013 April 15, 2008 [Member]	Dec. 31, 2013 April 17, 2007 [Member]
Grant Date [Line Items]
Options Granted	8,100,000	205,000	1,235,000	410,000	530,000	790,000	550,000	4,380,000
Option Exercise (Strike) Price		$ 54.00	$ 54.00	$ 35.00	$ 30.00	$ 27.00	$ 27.00	$ 22.50
Closing Stock Price on Date of Grant		$ 49.25	$ 49.01	$ 31.78	$ 27.13	$ 17.61	$ 24.35	$ 20.15
Options Outstanding	4,356,630	172,500	1,127,500	350,000	300,000	413,300	206,750	1,786,580
Options Exercisable	1,442,380	0	0	25,000	0	173,300	113,000	1,131,080