Equity-Accounted Investments And Other Long-Term Assets (Narrative) (Details) R / shares in Units, SFr in Millions, R in Millions, Item in Millions														1 Months Ended				3 Months Ended			12 Months Ended
	Apr. 15, 2020 CHF (SFr)	Apr. 15, 2020 USD ($)	Apr. 13, 2020 CHF (SFr)	Apr. 13, 2020 USD ($)	Apr. 01, 2020 USD ($) shares	Apr. 01, 2020 ZAR (R) shares	Mar. 31, 2020 USD ($)	Oct. 02, 2019 CHF (SFr)	Oct. 02, 2019 USD ($)	Aug. 02, 2019 shares	May 03, 2019 ZAR (R)	Aug. 02, 2017 USD ($)	Aug. 02, 2017 ZAR (R)	May 31, 2019 USD ($) shares	May 31, 2019 ZAR (R) shares	Jun. 30, 2017 USD ($)	Aug. 31, 2016 USD ($) Item	Mar. 31, 2020 USD ($) shares	Mar. 31, 2019 USD ($)	Mar. 31, 2019 ZAR (R)	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($)		Jun. 30, 2018 USD ($)		Aug. 31, 2020 R / shares	Jun. 30, 2020 ZAR (R) R / shares shares	Mar. 31, 2020 ZAR (R) R / shares	Feb. 29, 2020	Jan. 31, 2020 USD ($)	Aug. 31, 2019 USD ($)	May 03, 2019 USD ($)
Cash dividend received from equity method investment																					$ 0	$ 284,000	[1]	$ 0	[1]
Impairment loss on equity method investment																					33,831,000	2,084,000
Market value of holding																					65,836,000	148,427,000	[2]
Aggregate purchase price of shares in cash																					$ 2,500,000	$ 2,989,000	[1]	133,335,000	[1]
DNI [Member]
Equity-accounted investments, ownership percentage																						30.00%							27.00%
Minimum ownership percentage that should be owned in DNI unless whole remaining interest disposed off																					8.00%
Settlement of outstanding long-term borrowings																			$ 27,600,000	R 400.0
Impairment loss on equity method investment					$ 11,500,000		$ 1,600,000														$ 13,070,000
Finbond [Member]
Equity-accounted investments, ownership percentage																					31.00%	29.00%					31.00%
Investment shares owned | shares																					268,820,933						268,820,933
Market value of holding																					$ 357,000,000						R 6,000.0
Number of additional shares acquired | shares										1,148,901
Shares repurchased | shares																		47,000,000
Share price per share | R / shares																										R 1.47	R 2.3	R 2.91123
Business acquisition amount contributed | R																												R 136.8
V2 [Member]
Equity-accounted investments, ownership percentage																					50.00%	50.00%					50.00%
Impairment loss on equity method investment																		$ 2,500,000
Business acquisition amount contributed																					$ 5,000,000									$ 1,300,000	$ 1,300,000
Working capital facility																					$ 500,000										$ 5,000,000
Cell C [Member]
Equity-accounted investments, ownership percentage																					15.00%	15.00%					15.00%
CPS [Member]
Equity-accounted investments, ownership percentage																					87.50%	87.50%					87.50%
Percentage of ownership interest																					87.50%						87.50%
Cedar Cellular [Member]
Equity-accounted investments, ownership percentage																					7.625%	7.625%					7.625%
Fixed interest rate on notes payable																					24.82%						24.82%
Notes payable amount																					$ 0	$ 0
Interest income recognized																					0	2,400,000		$ 1,400,000
Present value of expected cash flows from debt security																					0
Investment amortized cost basis before impairment																						12,800,000
Other-than-temporary impairment related to the credit loss																						$ 12,800,000
Bank Frick [Member]
Percentage of ownership interest								35.00%	35.00%
Equity acquisition amount under purchase agreement								SFr 46.4	$ 46,500,000
Termination fee paid to the Frick Family to cancel option	SFr 17.0	$ 17,500,000
Impairment loss on equity method investment																		18,300,000
Net1 SA [Member] | DNI [Member]
Equity-accounted investments, ownership percentage																						30.00%		38.00%
Cash consideration received on transaction														$ 15,000,000	R 215.0
Settlement of outstanding long-term borrowings | R											R 230.0
Impairment loss included in accumulated other comprehensive loss																		$ 11,300,000
Existing cash reserves to settle its outstanding long-term borrowings																																$ 15,000,000
Net1 SA [Member] | DNI [Member] | Call Option [Member]
Number of shares sold | shares														30,394,765	30,394,765
Option strike price used to calculate the strike price for 27% retained interest														$ 1,580,000,000	R 2,827,000.0
Option strike price on 27% of retained interest														$ 480,000,000	R 8,593.0
Minimum smaller denominations a call options can be split, percent														20.00%	20.00%
Net1 SA [Member] | DNI [Member] | Class A [Member]
Number of shares sold | shares														7,605,235	7,605,235
Net1 SA [Member] | DNI [Member] | Minimum [Member] | Call Option [Member]
Percentage of voting and participation interests required to be acquired by nominated party to exercise a call option														2.50%	2.50%
Net1 SA [Member] | Cell C [Member] | Class A [Member]
Investment amount owned																					$ 0
Investment shares owned | shares																					75,000,000						75,000,000
Net1 SA [Member] | MIC [Member]
Number of shares sold | shares					3,508,455	3,508,455
Cash consideration received on transaction					$ 5,500,000	R 99.2
Notes receivable obtained in exchange for shares sold to DNI | R						R 99.2
Net1 SA [Member] | MIC [Member] | Call Option [Member]
Number of shares sold | shares					26,886,310	26,886,310
Cash consideration received on transaction					$ 42,500,000	R 760.0
Net1 SA [Member] | MIC [Member] | Unsecured Notes Payable [Member]
Present value of the note and expected cash repayments					$ 5,400,000	R 95.7
Rate used by Rand Merchant Bank to derive a 24 month interest rate					0.30%	0.30%
Fixed interest rate on notes payable					7.25%
Periodic principal payment amount					$ 300,000
Estimated debt transaction costs					$ 1,000,000
Interest rate used to determine the present value					6.63%	6.63%
Net1 SA [Member] | MIC [Member] | Unsecured Notes Payable [Member] | JIBAR [Member]
Debt instrument variable interest rate					6.33%	6.33%
Net1 SA [Member] | Bank Frick [Member]
Average price to book valuation																		0.9
Return on equity, price to book ratio																		1.15
Cash dividend received from equity method investment			SFr 1.3	$ 1,300,000
Net1 SA [Member] | Bank Frick [Member] | Minimum [Member]
Return on equity, price to book ratio																		0.7
Net1 SA [Member] | Bank Frick [Member] | Maximum [Member]
Return on equity, price to book ratio																		4.7
Net1 SA [Member] | Cell C [Member] | Class A [Member]
Aggregate purchase price of shares in cash												$ 151,000,000	R 2,000.0
MobiKwik [Member]
Percentage of ownership interest																					12.00%	13.00%					12.00%
Aggregate purchase price of shares in cash																$ 10,600,000	$ 15,000,000					$ 1,100,000
MobiKwik [Member] | Minimum [Member]
Number of users | Item																	100.0
Number of merchants | Item																	2.3
Equity investment acquisition period																	24 months
MobiKwik [Member] | Maximum [Member]
Equity acquisition amount under purchase agreement																	$ 40,000,000

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

[2] Refer to Note 1