ACQUISITION OF RENO CREEK PROJECT (Details) - USD ($)	Aug. 09, 2017	Jul. 31, 2017	Jul. 31, 2016
Assets acquired and liabilities assumed
Asset retirement obligations		$ (3,729,902)	$ (3,746,464)
Reno Creek Project [Member] | Subsequent Event [Member]
Consideration paid
14,634,748 UEC common shares at $1.37 per share	$ 20,049,605
11,308,728 UEC share purchase warrants at $0.45 per warrant	5,088,928
Cash payment	909,930
Transaction costs	779,509
Consideration paid, Net	26,827,972
Assets acquired and liabilities assumed
Cash and cash equivalents	1,247,170
Prepaid expenses	319,874
Reclamation deposits	73,973
Land & buildings	257,000
Mineral rights & properties	25,003,928
Asset retirement obligations	(73,973)
Assets acquired and liabilities assumed, Net	$ 26,827,972