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Revenue (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Revenue [Abstract] |  |  |
Percentage of completion method, revenue recognized | $ 0.0 | $ 0.0 | $ 0.0

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- Definition Percentage Of Completion Revenue Recognized + References No definition available. + Details
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Namespace Prefix: | ueps_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_RevenuesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration