Equity-Accounted Investments And Other Long-Term Assets (Ownership Percentage Of Equity-Accounted Investments) (Details)	Dec. 31, 2020	Jun. 30, 2020
Bank Frick [Member]
Schedule of Equity Method Investments [Line Items]
Equity-accounted investments, ownership percentage	35.00%	35.00%
Finbond [Member]
Schedule of Equity Method Investments [Line Items]
Equity-accounted investments, ownership percentage	31.00%	31.00%
Carbon Tech Limited ("Carbon"), formerly OneFi Limited [Member]
Schedule of Equity Method Investments [Line Items]
Equity-accounted investments, ownership percentage	25.00%	25.00%
Revix [Member]
Schedule of Equity Method Investments [Line Items]
Equity-accounted investments, ownership percentage	25.00%	25.00%
SmartSwitch Namibia [Member]
Schedule of Equity Method Investments [Line Items]
Equity-accounted investments, ownership percentage	50.00%	50.00%
V2 [Member]
Schedule of Equity Method Investments [Line Items]
Equity-accounted investments, ownership percentage	50.00%	50.00%
Walletdoc [Member]
Schedule of Equity Method Investments [Line Items]
Equity-accounted investments, ownership percentage	0.00%	20.00%