Borrowings (Narrative) (Details) $ in Thousands, ₩ in Millions, R in Millions					1 Months Ended		3 Months Ended			9 Months Ended
	Jan. 01, 2019 KRW (₩)	Sep. 26, 2018 ZAR (R)	Sep. 14, 2018 USD ($)	Oct. 20, 2017 USD ($)	Apr. 30, 2019 ZAR (R)	Apr. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)		Mar. 31, 2019 ZAR (R)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)		Mar. 31, 2019 USD ($)	Feb. 28, 2019 ZAR (R)	Feb. 27, 2019 ZAR (R)	Feb. 27, 2019 USD ($)	Feb. 04, 2019 USD ($)	Jan. 01, 2019 USD ($)	Oct. 31, 2018 ZAR (R)	Oct. 31, 2018 USD ($)	Sep. 26, 2018 USD ($)	Jun. 30, 2018 ZAR (R)	Jun. 30, 2018 USD ($)	Aug. 31, 2017 ZAR (R)	Aug. 31, 2017 USD ($)	Jul. 29, 2017 KRW (₩)	Jul. 29, 2017 USD ($)
Long-term borrowings														$ 15,823										$ 50,164
Maximum borrowing capacity														163,471
Total funds in bank accounts														74,181
Proceeds from bank overdraft (Note 11)							$ 278,288	$ 9,802	[1]		$ 584,525	$ 42,372	[1]
Amount utilized														8,865
South Africa [Member] | Revolving Credit Facility [Member]
Paid non-refundable origination fee																									R 6.3	$ 600
Incurred interest expense							600	1,900			2,700	5,500
Prepaid facility fees							$ 100	100			200	300
South Korea [Member] | Facility C [Member]
Amount utilized																											₩ 300.0	$ 300
Unscheduled repayment to credit facilitiy				$ 16,600
South Korea [Member] | Revolving Credit Facility [Member]
Incurred interest expense												$ 400
Prepaid facility fees								$ 100
Amended July 2017 [Member] | South Africa [Member] | Facilities A, B, C and D [Member]
Long-term borrowings										R 229.1				15,800
Deferred fees										0.9				100
Principal repayment										151.3	$ 10,600
June 2018 Facility [Member] | South Africa [Member] | Revolving Credit Facility [Member]
Paid non-refundable origination fee										R 2.0				100
JIBAR [Member] | Amended July 2017 [Member] | South Africa [Member] | Facilities A, B, C and D [Member]
Margin percentage										2.75%	2.75%
Interest rate										7.15%	7.15%
JIBAR [Member] | Amended July 2017 [Member] | South Africa [Member] | Facilities A, B, C and D [Member] | Subsequent Event [Member]
Unscheduled repayment to credit facilitiy					R 230.0	$ 15,900
JIBAR [Member] | June 2018 Facility [Member] | South Africa [Member] | Revolving Credit Facility [Member]
Margin percentage										2.75%	2.75%
South African Credit Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member]
Amount utilized										R 1,100.0				72,800
South African Credit Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member] | Net1 SA [Member]
Percentage repayment of overdraft facility amount utilized		90.00%
Maturity date		Sep. 26, 2019
Maximum borrowing capacity		R 1,500.0																				$ 103,600
Paid non-refundable origination fee																				R 3.8	$ 300
South African Credit Facility [Member] | South African Prime Rate [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member] | Net1 SA [Member]
Margin percentage		1.00%
South African Credit Facility [Member] | Prime Rate [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member]
Interest rate										10.25%	10.25%
Overdraft Facility [Member]
Maximum borrowing capacity														32,245
Proceeds from bank overdraft (Note 11)											$ 584,525
Amount utilized														83,046
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Maximum borrowing capacity														120,866
Amount utilized														74,181
Indirect And Derivative Facilities [Member]
Maximum borrowing capacity														10,360
Amount utilized														6,678										7,871
Nedbank Limited [Member] | South Africa [Member]
Maximum borrowing capacity														31,080
Nedbank Limited [Member] | South African Credit Facility [Member] | South Africa [Member]
Aggregate amount														31,100	R 450.0		$ 700,000
Maximum borrowing capacity | R															R 50.0	R 300.0
Primary amount, available immediately										R 450.0				31,100
Nedbank Limited [Member] | South African Credit Facility [Member] | Nedbank Short-Term Credit Facility [Member]
Total funds in bank accounts														4,200
Amount drawn under the Nedbank facility											5,600
Proceeds from bank overdraft (Note 11)											$ 1,400
Nedbank Limited [Member] | Overdraft Facility [Member] | South Africa [Member]
Interest rate										9.10%	9.10%
Maximum borrowing capacity														3,453
Proceeds from bank overdraft (Note 11)											$ 64,196
Primary amount, available immediately										R 300.0				20,700
Commitment fee percentage										0.35%	0.35%
Amount utilized														1,393
Nedbank Limited [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | South Africa [Member]
Maximum borrowing capacity														17,267
Primary amount, available immediately										R 250.0				17,300
Amount utilized														1,393
Unused borrowing capacity, amount | R										50.0
Nedbank Limited [Member] | Overdraft Facility [Member] | General Banking Facility [Member] | South Africa [Member]
Primary amount, available immediately										50.0				3,400
Nedbank Limited [Member] | Overdraft Facility [Member] | Indirect And Derivative Facilities [Member] | South Africa [Member]
Primary amount, available immediately										150.0				10,400
Amount utilized										96.7				6,700									R 108.0	7,900
Nedbank Limited [Member] | Overdraft Facility [Member] | Nedbank Short-Term Credit Facility [Member] | South Africa [Member]
Amount drawn under the Nedbank facility											$ 5,600
Amount utilized										R 81.4				5,600
Nedbank Limited [Member] | Indirect And Derivative Facilities [Member] | South Africa [Member]
Maximum borrowing capacity														10,360
Amount utilized														6,678										7,871
Bank Frick [Member] | South Korea [Member]
Maximum borrowing capacity														20,000
Bank Frick [Member] | Overdraft Facility [Member] | United States [Member]
Maximum borrowing capacity																		$ 20,000
Termination written notice			42 days
Amount utilized														8,900
Bank Frick [Member] | Overdraft Facility [Member] | South Korea [Member]
Maximum borrowing capacity														20,000
Proceeds from bank overdraft (Note 11)											$ 13,857
Amount utilized														8,865
Bank Frick [Member] | Overdraft Facility [Member] | Renewed [Member] | United States [Member]
Maximum borrowing capacity			$ 10,000
Bank Frick [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | South Korea [Member]
Maximum borrowing capacity
Amount utilized
Bank Frick [Member] | Overdraft Facility [Member] | LIBOR [Member] | Renewed [Member] | United States [Member]
Interest rate										2.59975%	2.59975%
Bank Frick [Member] | Overdraft Facility [Member] | 3-month US dollar LIBOR Rate [Member] | Renewed [Member] | United States [Member]
Margin added on rate			4.50%
Bank Frick [Member] | Indirect And Derivative Facilities [Member] | South Korea [Member]
Maximum borrowing capacity
Amount utilized
Hana Bank [Member] | Overdraft Facility [Member] | South Korea [Member]
Interest rate	1.984%
Maximum borrowing capacity	₩ 10,000.0																		$ 10,000
Credit faility expiration period										1 year	1 year
Hana Bank [Member] | Overdraft Facility [Member] | CD Rates [Member] | South Korea [Member]
Interest rate	1.87%

[1] Refer to Note 1.