ACQUISITION OF RENO CREEK PROJECT (Details) - USD ($)		6 Months Ended
	Aug. 09, 2017	Jan. 31, 2018	Jul. 31, 2017
Consideration paid
14,634,748 UEC common shares at $1.37 per share		$ 20,332,617
Assets acquired and liabilities assumed
Reclamation deposits		1,779,182	$ 1,706,028
Asset retirement obligations		$ (3,912,079)	$ (3,729,902)
Reno Creek Project [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	370,085
Mineral rights & properties	25,553,807
Asset retirement obligations	(73,973)
Deferred tax liabilities	(662,964)
Assets acquired and liabilities assumed, Net	$ 26,827,972