v2.4.0.6

Investment in Mining Option - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		77 Months Ended	1 Months Ended	12 Months Ended		1 Months Ended				9 Months Ended	12 Months Ended	1 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	May 31, 2011 Rio Novo [Member]	Dec. 31, 2011 Rio Novo [Member]	Sep. 30, 2012 Rio Novo [Member]	May 31, 2011 Rio Novo [Member] Minimum [Member]	May 31, 2011 Rio Novo [Member] Cash [Member]	May 31, 2011 Rio Novo [Member] Escrow Account Deposit [Member]	Jun. 04, 2010 Toldafria Prospect [Member]	Sep. 30, 2012 Toldafria Prospect [Member]	Jun. 30, 2011 Toldafria Prospect [Member]	Jun. 04, 2010 Toldafria Prospect [Member] Monthly Payment [Member]
Investment [Line Items]
Area of land of gold prospect												164
Option to acquire interest percentage												50.00%
Percentage of interest acquired												25.00%
Payment to acquire interest												$ 2,300,000
Payment to acquire investment in mining option													8,000,000
Expected payment to acquire interest													3,050,000	2,650,000
Additional interest to be acquired													10.00%	15.00%
Payment period to acquire additional interest													30 days
Prospecting, exploration, development and other costs	0	0	0	0	6,750										30,000
Proceeds from sale of mining option			0	902,035	902,035	902,035				300,000	602,035
Ordinary shares received in sale of mining option						500,000	500,000	425,000
Value of ordinary shares received in sale of mining option			0	737,950	737,950	737,950
Additional shares to be received in sale of mining option						766,667
Term of Toldafria Prospect									20 years
Percentage of ownership by Rio Novo on Toldafria Prospect						100.00%
Loss on sale of mining option	$ 0	$ 0	$ 0	$ (660,015)	$ (660,015)		$ 660,015

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UNIVERSAL GOLD MINING CORP. 10-Q