Fair Value Of Financial Instruments (Outstanding Foreign Exchange Contracts) (Details)	12 Months Ended
	Jun. 30, 2013 USD ($)	Jun. 30, 2013 ZAR	Jun. 30, 2014 Foreign Exchange Contract 1 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 1 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 2 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 2 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 3 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 3 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 4 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 4 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 5 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 5 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 6 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 6 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 7 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 7 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 8 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 8 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 9 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 9 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 10 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 10 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 11 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 11 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 12 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 12 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 13 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 13 [Member] ZAR	Jun. 30, 2014 Foreign Exchange Contract 14 [Member] EUR (€)	Jun. 30, 2014 Foreign Exchange Contract 14 [Member] ZAR
Derivatives, Fair Value [Line Items]
Notional amount	$ 4,000,000,000		€ 182,272.50		€ 182,272.50		€ 180,022.50		€ 180,022.50		€ 180,022.50		€ 180,022.50		€ 181,570.50		€ 181,570.50		€ 180,022.50		€ 180,022.50		€ 180,022.50		€ 180,022.50		€ 174,424.50		€ 174,424.50
Strike price (ZAR)	9.06	9.06	15.2077	15.2077	15.3488	15.3488	15.4228	15.4228	15.2819	15.2819	15.3623	15.3623	15.5041	15.5041	15.5739	15.5739	15.4316	15.4316	15.6552	15.6552	15.5136	15.5136	15.5970	15.5970	15.7391	15.7391	15.8119	15.8119	15.6729	15.6729
Fair market value price (ZAR)		10.1397		14.5803		14.5803		14.6542		14.6542		14.7367		14.7367		14.8119		14.8119		14.8982		14.8982		14.9874		14.9874		15.0671		15.0671
Maturity	Sep. 30, 2013	Sep. 30, 2013	Jul. 21, 2014	Jul. 21, 2014	Jul. 21, 2014	Jul. 21, 2014	Aug. 20, 2014	Aug. 20, 2014	Aug. 20, 2014	Aug. 20, 2014	Sep. 22, 2014	Sep. 22, 2014	Sep. 22, 2014	Sep. 22, 2014	Oct. 20, 2014	Oct. 20, 2014	Oct. 20, 2014	Oct. 20, 2014	Nov. 20, 2014	Nov. 20, 2014	Nov. 20, 2014	Nov. 20, 2014	Dec. 22, 2014	Dec. 22, 2014	Dec. 22, 2014	Dec. 22, 2014	Jan. 20, 2015	Jan. 20, 2015	Jan. 20, 2015	Jan. 20, 2015