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Fair Value Of Financial Instruments (Narrative) (Details)
3 Months Ended 6 Months Ended
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
Sep. 30, 2021
Jun. 30, 2021
USD ($)
Derivatives, Fair Value [Line Items]            
Fair value measurement asset transfers into Level 3 $ 0 $ 0 $ 0 $ 0    
Fair value measurement asset transfers out of Level 3 0 0 0 0    
Transfers into or out of Level 3 0 0 0 0    
Unrealized loss related to fair value adjustment to currency options $ (2,429,000) $ 0 $ (2,429,000) $ 0    
Foreign Exchange Contracts [Member]            
Derivatives, Fair Value [Line Items]            
Outstanding foreign exchange contracts 0   0   0  
Cell C [Member]            
Derivatives, Fair Value [Line Items]            
Investment amount owned $ 0.0   $ 0.0     $ 0.0
Equity method investment, percentage of ownership interest         0.00%  
Cell C [Member] | Net1 SA [Member] | Class A [Member]            
Derivatives, Fair Value [Line Items]            
Investment shares owned | shares 75,000,000   75,000,000