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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

X

- 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

X

- References

No definition available.

+ Details

Name:	us-gaap_RevenuesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration