Borrowings (Narrative) (Details) ₩ in Billions						1 Months Ended		3 Months Ended			9 Months Ended
	May 22, 2020	Apr. 15, 2020	Sep. 04, 2019 USD ($)	Jan. 01, 2019 KRW (₩)	Sep. 26, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 ZAR (R)	Mar. 31, 2020 USD ($)		Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($)		Mar. 31, 2019 USD ($)	Mar. 31, 2020 ZAR (R)	Sep. 30, 2019 ZAR (R)	Sep. 04, 2019 ZAR (R)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 ZAR (R)	Jan. 01, 2019 USD ($)	Sep. 26, 2018 ZAR (R)
South Africa [Member] | Revolving Credit Facility [Member]
Prepaid credit facility fees								$ 0		$ 100,000	$ 0		$ 200,000
Interest expense incurred								400,000		900,000	600,000		2,100,000
Overdraft Restricted As To Use For ATM Funding Only [Member]
Maximum borrowing capacity								81,041,000			81,041,000
Overdraft Facility [Member]
Maximum borrowing capacity								2,795,000		92,220,000	2,795,000		92,220,000
Amount utilized								51,370,000	[1]		51,370,000	[1]					$ 84,990,000
Overdraft Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member] | Net1 SA [Member]
Maximum borrowing capacity					$ 83,800,000	$ 67,100,000									R 1,200,000,000					R 1,500,000,000
Percentage repayment of overdraft facility amount utilized					90.00%
Amount utilized								44,300,000			$ 44,300,000			R 800,000,000
Credit facility expiration period					25 days
Overdraft Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility F [Member] | Net1 SA [Member]
Maximum borrowing capacity			$ 16,800,000													R 300,000,000
Debt instrument interest rate											5.50%
Non-refundable structuring fee						$ 100,000	R 2,200,000
Overdraft Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | First Senior Facility F [Member] | Net1 SA [Member]
Maximum borrowing capacity | R																220,000,000
Overdraft Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | Second Senior Facility F [Member] | Net1 SA [Member]
Maximum borrowing capacity | R																R 80,000,000
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Amount utilized								51,370,000			$ 51,370,000
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | South Africa [Member] | Facility E [Member] | Net1 SA [Member]
Maximum borrowing capacity | R																				R 1,200,000,000
Overdraft Facility [Member] | JIBAR [Member] | Amended July 2017 [Member] | South Africa [Member] | Revolving Credit Facility [Member] | Net1 SA [Member]
Debt instrument interest rate											5.61%
Overdraft Facility [Member] | Prime Rate [Member] | South Africa [Member] | Facility E [Member] | Subsequent Event [Member]
Debt instrument interest rate	7.25%	7.75%
Overdraft Facility [Member] | Prime Rate [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member] | Net1 SA [Member]
Debt instrument interest rate											8.75%
Indirect And Derivative Facilities [Member]
Maximum borrowing capacity								8,384,000			$ 8,384,000
Amount utilized								5,229,000			5,229,000						6,643,000
Nedbank Limited [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | South Africa [Member]
Maximum borrowing capacity								13,973,000			13,973,000
Nedbank Limited [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member]
Amount utilized								7,100,000			7,100,000
Nedbank Limited [Member] | South African Credit Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | South Africa [Member]
Amount utilized								7,100,000			7,100,000			127,100,000
Nedbank Limited [Member] | South African Credit Facility [Member] | General Banking Facility [Member] | South Africa [Member]
Amount utilized								0			0			0
Nedbank Limited [Member] | South African Credit Facility [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member]
Maximum borrowing capacity								25,200,000			25,200,000			450,000,000
Nedbank Limited [Member] | Overdraft Facility [Member] | South Africa [Member]
Maximum borrowing capacity								2,795,000			2,795,000
Amount utilized								7,104,000	[1]		7,104,000	[1]					5,880,000
Nedbank Limited [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | South Africa [Member]
Maximum borrowing capacity										25,152,000			25,152,000
Amount utilized								7,104,000			7,104,000
Primary amount, available immediately								14,000,000			14,000,000			250,000,000
Nedbank Limited [Member] | Overdraft Facility [Member] | General Banking Facility [Member] | South Africa [Member]
Primary amount, available immediately								2,800,000			2,800,000			50,000,000
Nedbank Limited [Member] | Overdraft Facility [Member] | Nedbank Short-Term Credit Facility [Member]
Maximum borrowing capacity								4,900,000			4,900,000
Nedbank Limited [Member] | Overdraft Facility [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member]
Maximum borrowing capacity								12,000,000			12,000,000
Net of total overdraft facilities withdrawn											7,100,000
Carrying value of short term borrowings								4,900,000			$ 4,900,000
Debt instrument interest rate											7.60%
Primary amount, available immediately								16,800,000			$ 16,800,000			300,000,000
Nedbank Limited [Member] | Overdraft Facility [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member] | Subsequent Event [Member]
Debt instrument interest rate	6.10%	6.60%
Nedbank Limited [Member] | Indirect And Derivative Facilities [Member] | South Africa [Member]
Maximum borrowing capacity								8,384,000			8,384,000
Amount utilized								5,229,000			5,229,000						6,643,000
Nedbank Limited [Member] | Indirect And Derivative Facilities [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member]
Amount utilized								5,200,000			5,200,000			93,600,000			6,600,000	R 93,600,000
Primary amount, available immediately								8,400,000			8,400,000			R 150,000,000
Bank Frick [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | United States [Member]
Maximum borrowing capacity								0			0
Bank Frick [Member] | Overdraft Facility [Member] | United States [Member]
Maximum borrowing capacity								0			0
Amount utilized								0	[1]		0	[1]					9,544,000
Termination written notice			42 days
Credit facility settled in full and cancelled											20,000,000
Bank Frick [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | United States [Member]
Maximum borrowing capacity										$ 0			$ 0
Amount utilized								0			0
Bank Frick [Member] | Indirect And Derivative Facilities [Member] | United States [Member]
Maximum borrowing capacity								0			0
Amount utilized								$ 0			$ 0						$ 0
Hana Bank [Member] | Overdraft Facility [Member] | South Korea [Member]
Maximum borrowing capacity				₩ 10.0															$ 8,700,000
Credit facility expiration period				1 year
Hana Bank [Member] | Overdraft Facility [Member] | 3-month CD Rate [Member] | South Korea [Member]
Debt instrument variable interest rate				1.98%
Hana Bank [Member] | Overdraft Facility [Member] | CD Rates [Member] | South Korea [Member]
Debt instrument variable interest rate											1.53%

[1] Nedbank balance as of March 31, 2020, of $7.1 million comprises the net of total overdraft facilities withdrawn of $12.0 million offset against funds in bank accounts with Nedbank of $4.9 million.