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Commitments And Contingencies (Narrative) (Details)
R in Millions, $ in Millions
9 Months Ended
Mar. 31, 2023
USD ($)
Mar. 31, 2023
ZAR (R)
Nedbank [Member] | Guarantee [Member]    
Guarantor Obligations [Line Items]    
Guarantee amount $ 0.1 R 2.1
Nedbank [Member] | Guarantee [Member] | Minimum [Member]    
Guarantor Obligations [Line Items]    
Commission charge rate 0.40% 0.40%
Nedbank [Member] | Guarantee [Member] | Maximum [Member]    
Guarantor Obligations [Line Items]    
Guarantee amount $ 2.0 R 35.2
Commission charge rate 1.84% 1.84%
Nedbank [Member] | Ceded And Pledged Bank Accounts As Security [Member]    
Guarantor Obligations [Line Items]    
Guarantee amount $ 0.2 R 3.0
RMB Member [Member] | Guarantee [Member]    
Guarantor Obligations [Line Items]    
Guarantee amount $ 1.9 R 33.1
RMB Member [Member] | Guarantee [Member] | Minimum [Member]    
Guarantor Obligations [Line Items]    
Guarantees commission fee percent per annum 3.42%  
RMB Member [Member] | Guarantee [Member] | Maximum [Member]    
Guarantor Obligations [Line Items]    
Guarantees commission fee percent per annum 3.44%