Borrowings (Narrative) (Details) $ in Thousands, R in Millions	9 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2022 ZAR (R)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 ZAR (R)
Short-term Debt [Line Items]
Short-term facility available	$ 124,140
Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	113,382
General Banking Facility [Member]
Short-term Debt [Line Items]
Short-term facility available | R		R 205.0
Overdraft Facility [Member]
Short-term Debt [Line Items]
Amount utilized	45,678		$ 14,245
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Amount utilized	45,678
Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	10,758
Amount utilized	10,659		10,947
Nedbank Limited [Member] | South Africa [Member]
Short-term Debt [Line Items]
Short-term facility available	27,900	406.6
Nedbank Limited [Member] | South Africa [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	17,179
Amount utilized | R		156.6		R 156.6
Nedbank Limited [Member] | South Africa [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Short-term facility available	17,200	R 250.0
Amount utilized	0		0
Nedbank Limited [Member] | South Africa [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	$ 27,937
Interest rate on credit facility	6.60%	6.60%
Aggregate amount of short-term borrowing	$ 10,700	R 155.1
Amount utilized	0
Nedbank Limited [Member] | South Africa [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	10,758	156.6
Amount utilized	10,659		10,947
Nedbank Limited [Member] | South Africa [Member] | Indirect And Derivative Facilities [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Amount utilized	10,700	155.1	10,900	R 156.6
RMB [Member] | South Africa [Member]
Short-term Debt [Line Items]
Short-term facility available	96,203
RMB [Member] | South Africa [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Short-term Debt [Line Items]
Short-term facility available	96,203
RMB [Member] | South Africa [Member] | Overdraft Facility [Member]
Short-term Debt [Line Items]
Amount utilized	45,678		14,245
RMB [Member] | South Africa [Member] | Overdraft Facility [Member] | Facility E [Member]
Short-term Debt [Line Items]
Short-term facility available	$ 96,200	1,400.0
RMB [Member] | South Africa [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | Prime Rate [Member] | Facility E [Member]
Short-term Debt [Line Items]
Debt instrument variable interest rate	7.75%
RMB [Member] | South Africa [Member] | Overdraft Facility [Member] | Letter Of Amendment [Member] | Facility E [Member]
Short-term Debt [Line Items]
Amount utilized	$ 45,700	R 700.0
RMB [Member] | South Africa [Member] | Indirect And Derivative Facilities [Member]
Short-term Debt [Line Items]
Short-term facility available	0
Amount utilized	$ 0		$ 0