Borrowings (Narrative) (Details) R in Millions	3 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Nov. 30, 2022 ZAR (R)	Nov. 08, 2022 ZAR (R)	Sep. 30, 2022 ZAR (R)	Aug. 15, 2022 ZAR (R)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 ZAR (R)
Maximum borrowing capacity	$ 107,675,000
Revolving Credit Facility [Member]
Maximum borrowing capacity | R						R 150.0
Interest expense incurred	$ 200,000
Commitment fee per annum payable on monthly unutilized amount	1.50%
South Africa [Member] | Long-term Debt [Member]
Interest expense incurred	$ 2,700,000	$ 0
Prepaid credit facility fees	200,000	$ 0
Overdraft Restricted As To Use For ATM Funding Only [Member]
Maximum borrowing capacity	13,766,000
Nedbank Short-Term Credit Facility [Member]
Maximum borrowing capacity	16,186,000
Overdraft Facility [Member]
Amount utilized	69,332,000						$ 66,218,000
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Amount utilized	$ 57,951,000						51,338,000
Overdraft Facility [Member] | Prime Rate [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member]
Debt instrument variable interest rate	0.10%
CCMS Facilities [Member] | Facility A [Member]
Maximum borrowing capacity | R					R 700.0
CCMS Facilities [Member] | Facility B [Member]
Maximum borrowing capacity | R					350.0
CCMS Facilities [Member] | Asset Backed Facility [Member]
Maximum borrowing capacity | R				R 200.0	100.0
Amount utilized | R					90.2
CCMS Facilities [Member] | Overdraft Facility [Member]
Maximum borrowing capacity | R					248.0
Amount utilized | R					205.0
CCMS Facilities [Member] | Overdraft Facility [Member] | Scenario Forecast [Member]
Maximum borrowing capacity | R			R 205.0
Indirect And Derivative Facilities [Member]
Amount utilized	$ 6,952,000						5,967,000
Nedbank Limited [Member] | South African Credit Facility [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member]
Maximum borrowing capacity	8,700,000				156.6
Nedbank Limited [Member] | Overdraft Facility [Member] | Indirect And Derivative Facilities [Member] | South Africa [Member]
Maximum borrowing capacity	8,700,000				156.6			R 156.6
Amount utilized	5,100,000				92.1		5,700,000	92.1
RMB Loan Facilities [Member]
Guarantee amount	250,000,000
RMB Loan Facilities [Member] | South Africa [Member] | Facility E [Member]
Maximum borrowing capacity	77,700,000				1,400.0
Amount utilized	$ 58,000,000.0				1,000.0
RMB Loan Facilities [Member] | Prime Rate [Member] | South Africa [Member] | Facility E [Member]
Debt instrument variable interest rate	9.75%
RMB Loan Facilities [Member] | Indirect Credit Facility [Member]
Maximum borrowing capacity	$ 7,500,000				135.0			135.0
Amount utilized	$ 1,800,000				R 33.1		$ 300,000	R 5.1