Exploration Stage Company (Detail) (Detail) (USD $)	1 Months Ended	12 Months Ended				49 Months Ended
	Oct. 31, 2008	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009	Oct. 31, 2012
Operating loss since inception	$ (12)	$ (3,531,780)	$ (4,777,291)	$ (981,396)	$ (89,397)	$ (9,379,876)