Contractual interest rate for funds borrowed, under the debt agreement.

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Commitments And Contingencies (Narrative) (Details) R in Millions, $ in Millions	Mar. 23, 2018 ZAR (R)	Sep. 30, 2018 ZAR (R)	Sep. 30, 2018 USD ($)
Guarantor Obligations [Line Items]
Maximum payment amount under guarantee		R 96.0	$ 6.8
Counter Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantee amount		R 96.0	$ 6.8
Payment Guarantee [Member] \| Minimum [Member]
Guarantor Obligations [Line Items]
Charge rate		0.40%	0.40%
Payment Guarantee [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Charge rate		1.94%	1.94%
Nedbank [Member] \| Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantee amount		R 96.0	$ 6.8
CPS [Member] \| Additional Implementation Costs [Member]
Guarantor Obligations [Line Items]
Amount ordered to refund to SASSA	R 317.0