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Commitments And Contingencies (Narrative) (Details) ZAR in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2015 ZAR	Jun. 30, 2015 USD ($)
Guarantor Obligations [Line Items]
Operating lease payments	$ 6.8	$ 7.5	$ 15.9
Capital commitments		0.2			$ 3.4
Purchase obligations		$ 5.5			5.0
Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantee amount				ZAR 125.0	10.2
Maximum payment amount under guarantee				134.5	11.0
Charge rate, minimum	0.20%
Charge rate, maximum	2.00%
Nedbank [Member] \| Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantee amount				ZAR 134.5	$ 11.0