Borrowings (Narrative) (Details) $ in Thousands, ₩ in Millions, R in Millions					3 Months Ended
	Sep. 28, 2018	Sep. 26, 2018 ZAR (R)	Sep. 14, 2018 USD ($)	Oct. 20, 2017 USD ($)	Sep. 30, 2018 ZAR (R)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jan. 31, 2019 ZAR (R)	Jan. 31, 2019 USD ($)	Oct. 31, 2018 ZAR (R)	Oct. 31, 2018 USD ($)	Sep. 30, 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												$ 45,597			$ 50,164
Maximum borrowing capacity												165,546
Amount utilized												3,313				[1]
South Africa [Member] | Revolving Credit Facility [Member]
Paid non-refundable origination fee																	R 6.3	$ 600
Incurred interest expense						$ 1,100	$ 1,700
Prepaid facility fees						100	100
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							200
Prepaid facility fees							$ 30
Amended July 2017 [Member] | South Africa [Member]
Long-term borrowings												37,466			50,164
Amended July 2017 [Member] | South Africa [Member] | Facilities A, B, C and D [Member]
Long-term borrowings					R 529.9							37,500
Deferred fees					2.6							200
Principal repayment					R 151.3	$ 10,700
Maturity date					Dec. 28, 2018	Dec. 28, 2018
June 2018 Facility [Member] | South Africa [Member]
Long-term borrowings												8,131
June 2018 Facility [Member] | South Africa [Member] | Revolving Credit Facility [Member]
Long-term borrowings					R 115.0							8,100
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					7.00%	7.00%
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							76,600
South African Credit Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member] | Net1 SA [Member]
Maturity date		Sep. 26, 2019
Maximum borrowing capacity		R 1,500.0											$ 106,100
South African Credit Facility [Member] | Amended July 2017 [Member] | South Africa [Member] | Facility E [Member] | Net1 SA [Member] | Subsequent Event [Member]
Paid non-refundable origination fee										R 3.6	$ 200
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					10.00%	10.00%
Overdraft Facility [Member]
Maximum borrowing capacity												31,211
Amount utilized												88,091
Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member]
Maximum borrowing capacity												123,730
Amount utilized												84,778
Indirect And Derivative Facilities [Member]
Maximum borrowing capacity												10,605
Amount utilized												9,349			7,871
Nedbank Limited [Member] | South Africa [Member]
Maximum borrowing capacity												49,492
Nedbank Limited [Member] | South African Credit Facility [Member] | South Africa [Member]
Aggregate amount					R 700.0							49,500
Primary amount, available immediately					450.0							31,800
Secondary amount, not available immediately					R 250.0							17,700
Nedbank Limited [Member] | Overdraft Facility [Member] | South Africa [Member]
Interest rate					8.85%	8.85%
Maximum borrowing capacity												21,211
Primary amount, available immediately					R 300.0							21,200
Commitment fee percentage					0.35%	0.35%
Amount utilized												8,173
Nedbank Limited [Member] | Overdraft Facility [Member] | South Africa [Member] | Forecast [Member]
Secondary amount, available immediately								R 200.0	$ 14,100
Nedbank Limited [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | South Africa [Member]
Maximum borrowing capacity												17,676
Primary amount, available immediately					R 250.0							17,700
Amount utilized					115.6							8,173
Nedbank Limited [Member] | Overdraft Facility [Member] | General Banking Facility [Member] | South Africa [Member]
Primary amount, available immediately					50.0							3,500
Nedbank Limited [Member] | Overdraft Facility [Member] | Indirect And Derivative Facilities [Member] | South Africa [Member]
Primary amount, available immediately					150.0							10,600
Amount utilized					R 132.2							9,300		R 108.0	7,900
Nedbank Limited [Member] | Indirect And Derivative Facilities [Member] | South Africa [Member]
Maximum borrowing capacity												10,605
Amount utilized												9,349			7,871
Bank Frick [Member] | United States [Member]
Maximum borrowing capacity												10,000
Bank Frick [Member] | Overdraft Facility [Member] | United States [Member]
Maximum borrowing capacity												10,000
Termination written notice			42 days
Amount utilized												3,313
Bank Frick [Member] | Overdraft Facility [Member] | Renewed [Member] | United States [Member]
Interest rate			4.50%
Maximum borrowing capacity			$ 10,000
Bank Frick [Member] | Overdraft Facility [Member] | Overdraft Restricted As To Use For ATM Funding Only [Member] | United States [Member]
Maximum borrowing capacity
Amount utilized
Bank Frick [Member] | Overdraft Facility [Member] | LIBOR [Member] | Renewed [Member] | United States [Member]
Interest rate	2.39838%
Bank Frick [Member] | Indirect And Derivative Facilities [Member] | United States [Member]
Maximum borrowing capacity
Amount utilized

[1] Certain amounts shown here do not correspond to the Company's 2018 financial statements and reflects an adjustment made, refer to Note 1 See Notes to Unaudited Condensed Consolidated Financial Statements