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Schedule of Asset Retirement Obligation (Details) (USD $)
 9 Months Ended
Apr. 30, 2015
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 1 $ 3,967,589uec_ScheduleOfAssetRetirementObligationZeroTwoEightSixSixZerolLXFiveQEightNzVSevenkB
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 2 (77,125)uec_ScheduleOfAssetRetirementObligationZeroTwoEightSixSixZerobZOnelGTZlGwcG
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 3 242,038uec_ScheduleOfAssetRetirementObligationZeroTwoEightSixSixZeroMJnREightbVSixtnXK
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 4 4,132,502uec_ScheduleOfAssetRetirementObligationZeroTwoEightSixSixZeroCDfNRZerovnxXVl
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 5 (340,827)uec_ScheduleOfAssetRetirementObligationZeroTwoEightSixSixZeroRFivelHlCMCtdPD
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 6 $ 3,791,675uec_ScheduleOfAssetRetirementObligationZeroTwoEightSixSixZerocEightHkzFiveTwoVhFgg