Description Of Business And Basis Of Presentation (Impact Of Restatement On Comprehensive (Loss) Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2018
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Net loss	$ (78,358)	$ (308,658)	[1],[2]	$ 61,207	[1],[2]
Movement in foreign currency translation reserve	(35,070)	(26,148)	[1]	(19,286)	[1]
Total other comprehensive income (loss), net of taxes	26,737	(16,218)	[1]	(21,712)	[1]
Comprehensive income	(51,621)	(324,876)	[1]	39,495	[1]
Comprehensive income attributed to Net1	(51,621)	(322,469)	[1]	40,473	[1]
DNI [Member]
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Release of foreign currency translation reserve related to disposal of DNI	$ (11,323)	(5,679)	[1]	0	[1]
Discontinued Operations [Member]
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Net loss		(308,658)		61,207
Movement in foreign currency translation reserve		(26,148)
Release of foreign currency translation reserve related to disposal of DNI		5,679
Total other comprehensive income (loss), net of taxes		(16,218)
Comprehensive income		(324,876)		39,495
Comprehensive income attributed to Net1		(322,469)		40,473
Discontinued Operations [Member] | Scenario Previously Reported [Member]
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Net loss		(305,269)		63,366
Movement in foreign currency translation reserve		(26,194)
Release of foreign currency translation reserve related to disposal of DNI		2,452
Total other comprehensive income (loss), net of taxes		(19,491)
Comprehensive income		(324,760)		41,466
Comprehensive income attributed to Net1		(322,353)		42,444
Discontinued Operations [Member] | Restatement Adjustment [Member] | DNI [Member]
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Net loss		(3,227)		0
Movement in foreign currency translation reserve		0
Release of foreign currency translation reserve related to disposal of DNI		3,227
Total other comprehensive income (loss), net of taxes		3,227
Comprehensive income		0		0
Comprehensive income attributed to Net1		0		0
Discontinued Operations [Member] | Restatement Adjustment [Member] | Finbond [Member]
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Net loss		(162)		(2,159)
Movement in foreign currency translation reserve		46
Release of foreign currency translation reserve related to disposal of DNI		0
Total other comprehensive income (loss), net of taxes		46
Comprehensive income		(116)		(1,971)
Comprehensive income attributed to Net1		$ (116)		$ (1,971)

[1] Certain amounts have been restated to correct the misstatement discussed in Note 1

[2] Refer to Note 1