Borrowings (Summary Of Short-Term Credit Facilities) (Details) $ in Thousands, R in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2025 ZAR (R)	Jun. 30, 2024 ZAR (R)
Short-term Debt [Line Items]
Short-term facility available	$ 52,213		$ 52,213
Utilized	21,440	$ 24,893	94,188	$ 153,479
Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	38,195		38,195
Beginning Balance			16,088
Utilized			94,188
Repaid			(84,860)
Foreign currency adjustment			(1,866)
Ending Balance	23,550		23,550
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance			6,737
Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance			9,351
Ending Balance	$ 23,550		$ 23,550
Overdraft Facility [Member] | Nedbank Short-Term Credit Facility [Member]
Short-term Debt [Line Items]
Interest rate	0.50%		0.50%		0.50%
Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	$ 14,018		$ 14,018
Beginning Balance			1,937
Foreign currency adjustment			(18)
Ending Balance	1,919		1,919
Nedbank Limited [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	8,500		8,500		R 156.6	R 156.6
Total funds in bank accounts	300		300		R 5.0
RMB GBF [Member]
Short-term Debt [Line Items]
Short-term facility available	$ 38,195		$ 38,195
Interest rate	10.50%		10.50%		10.50%
RMB GBF [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	$ 38,195		$ 38,195
Beginning Balance			0
Utilized			23,489
Repaid			0
Foreign currency adjustment			61
Ending Balance	23,550		23,550
RMB GBF [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance			0
RMB GBF [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance			0
Ending Balance	23,550		23,550
RMB GBF [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			0
Foreign currency adjustment			0
Ending Balance	0		0
RMB Other [Member]
Short-term Debt [Line Items]
Short-term facility available	5,487		5,487
RMB Other [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			0
Utilized			0
Repaid			0
Foreign currency adjustment			0
Ending Balance	0		0
RMB Other [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Ending Balance	0		0
RMB Other [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance			0
Ending Balance	0		0
RMB Other [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	5,487		5,487
Beginning Balance			1,821
Foreign currency adjustment			(17)
Ending Balance	1,804		1,804
Nedbank Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	8,531		8,531
Nedbank Facilities [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			0
Utilized			0
Repaid			0
Foreign currency adjustment			0
Ending Balance	0		0
Nedbank Facilities [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance			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	8,531		8,531
Beginning Balance			116
Foreign currency adjustment			(1)
Ending Balance	115		115
RMB Connect [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
RMB Connect [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			9,351
Utilized			5,655
Repaid			(14,627)
Foreign currency adjustment			(379)
Ending Balance	0		0
RMB Connect [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance			0
RMB Connect [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance			9,351
Ending Balance	0		0
RMB Connect [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			0
Foreign currency adjustment			0
Ending Balance	0		0
RMB Bridge [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
RMB Bridge [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			0
Utilized			41,150
Repaid			(39,205)
Foreign currency adjustment			(1,945)
Ending Balance	0		0
RMB Bridge [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance			0
RMB Bridge [Member] | Overdraft Facility [Member] | No Restrictions As To Use [Member]
Short-term Debt [Line Items]
Beginning Balance			0
Ending Balance	0		0
RMB Bridge [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			0
Foreign currency adjustment			0
Ending Balance	0		0
RMB Facility E [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
RMB Facility E [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	0		0
Beginning Balance			6,737
Utilized			23,894
Repaid			(31,028)
Foreign currency adjustment			397
Ending Balance	0		0
RMB Facility E [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Beginning Balance			6,737
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		0
Beginning Balance			0
Foreign currency adjustment			0
Ending Balance	$ 0		$ 0