Income Taxes (Reconciliation Of Income Taxes) (Details)	12 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Income Taxes [Abstract]
Income taxes at fully-distributed South African tax rate	28.00%	28.00%	28.00%
Non-deductible items	0.38%	2.36%	4.71%
Foreign tax rate differential	7.42%	0.06%	1.89%
Foreign tax credits	(36.88%)	(1.68%)	(13.59%)
Taxation on deemed dividends in United States	34.60%	3.46%	13.46%
Capital gains tax paid	0.00%	0.00%	0.19%
Movement in valuation allowance	(0.09%)	(0.08%)	1.23%
Prior year adjustments	(0.09%)	(0.69%)	0.19%
Income tax provision	33.34%	31.43%	36.08%

Capital Gains Tax Paid

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Combined PercentageTo Measure Income Taxes And Deferred Income Taxes

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Effective Income Tax Rate Reconciliation Taxation On Deemed Dividends In United States

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense.

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