Capital Structure (Details) ZAR in Millions, $ in Millions	3 Months Ended
	Sep. 30, 2015 ZAR shares	Sep. 30, 2015 USD ($) shares	Sep. 30, 2015 USD ($)
Capital Structure [Abstract]
Number of shares repurchased	1,837,432	1,837,432
Cost of stock repurchased	ZAR 97.4	$ 9.2
Percentage of ordinary shares oustanding after subscription	12.50%	12.50%
Subscription of shares, value	ZAR 15.0		$ 1.4