Borrowings (Summary Of Short-Term Credit Facilities) (Details) R in Millions	12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 ZAR (R)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)
Short-term Debt [Line Items]
Short-term facility available	$ 76,815,000
Utilized	$ 182,990,000		$ 520,065,000	$ 570,862,000
Prime Rate [Member]
Short-term Debt [Line Items]
Margin	11.75%	11.75%
Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	$ 49,503,000
Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	11,276,000
Beginning Balance	32,046,000		66,218
Utilized	182,990,000		520,065,000
Repaid	(199,642,000)		(547,271,000)
Foreign currency adjustment	694,000		(6,966,000)
Ending Balance	16,088,000		32,046,000	66,218
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance	23,021,000
Ending Balance	6,737,000		23,021,000
Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance	9,025,000
Ending Balance	9,351,000		9,025,000
Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	16,036,000
Beginning Balance	1,869,000		5,967,000
Guarantees cancelled	5,000,000.0	R 90	(5,017,000)
Utilized			1,561,000
Foreign currency adjustment	68,000		(642,000)
Ending Balance	1,937,000		1,869,000	5,967,000
RMB Facility E [Member]
Short-term Debt [Line Items]
Short-term facility available	49,503,000
RMB Facility E [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	49,503,000
RMB Facility E [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0
Beginning Balance	23,021,000		51,338,000
Utilized	182,988,000		501,603,000
Repaid	(199,640,000)		(524,766,000)
Foreign currency adjustment	368,000		(5,154,000)
Ending Balance	$ 6,737,000		23,021,000	51,338,000
Interest rate	11.75%
RMB Facility E [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance	$ 23,021,000
Ending Balance	6,737,000		23,021,000
RMB Facility E [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance	0
Ending Balance	0		0
RMB Facility E [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	0
Beginning Balance	0		0
Guarantees cancelled			0
Utilized			0
Foreign currency adjustment	0		0
Ending Balance	0		0	0
RMB Indirect [Member]
Short-term Debt [Line Items]
Short-term facility available	7,425,000
RMB Indirect [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	0
RMB Indirect [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0
Beginning Balance	0		0
Utilized	0		0
Repaid	0		0
Foreign currency adjustment	0		0
Ending Balance	$ 0		0	0
Interest rate	0.00%
RMB Indirect [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance	$ 0
Ending Balance	0		0
RMB Indirect [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance	0
Ending Balance	0		0
RMB Indirect [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	7,425,000
Beginning Balance	1,757,000		313,000
Guarantees cancelled			0
Utilized			1,561,000
Foreign currency adjustment	64,000		(117,000)
Ending Balance	1,821,000		1,757,000	313,000
RMB Connect [Member]
Short-term Debt [Line Items]
Short-term facility available	11,276,000
RMB Connect [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	0
RMB Connect [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	11,276,000
Beginning Balance	9,025,000		14,880,000
Utilized	2,000		18,462,000
Repaid	(2,000)		(22,505,000)
Foreign currency adjustment	326,000		(1,812,000)
Ending Balance	$ 9,351,000		9,025,000	14,880,000
Interest rate	11.65%
RMB Connect [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance	$ 0
Ending Balance	0		0
RMB Connect [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance	9,025,000
Ending Balance	9,351,000		9,025,000
RMB Connect [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	0
Beginning Balance	0		0
Guarantees cancelled			0
Utilized			0
Foreign currency adjustment	0		0
Ending Balance	0		0	0
Nedbank Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	8,611,000
Nedbank Facilities [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	0
Nedbank Facilities [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0
Beginning Balance	0		0
Utilized	0		0
Repaid	0		0
Foreign currency adjustment	0		0
Ending Balance	$ 0		0	0
Interest rate	0.00%
Nedbank Facilities [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance	$ 0
Ending Balance	0		0
Nedbank Facilities [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance	0
Ending Balance	0		0
Nedbank Facilities [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	8,611,000
Beginning Balance	112,000		5,654,000
Guarantees cancelled			(5,017,000)
Utilized			0
Foreign currency adjustment	4,000		(525,000)
Ending Balance	$ 116,000		$ 112,000	$ 5,654,000
South Africa [Member] | Overdraft Facility [Member] | Nedbank Short-Term Credit Facility [Member] | Prime Rate [Member]
Short-term Debt [Line Items]
Margin	0.10%	0.10%