Commitments And Contingencies (Narrative) (Details) R in Millions, $ in Millions	Sep. 30, 2022 USD ($)	Sep. 30, 2022 ZAR (R)
Nedbank [Member] \| Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantee amount	$ 5.1	R 92.1
Nedbank [Member] \| Guarantee [Member] \| Minimum [Member]
Guarantor Obligations [Line Items]
Commission charge rate	0.40%	0.40%
Nedbank [Member] \| Guarantee [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Guarantee amount	$ 7.0	R 125.2
Commission charge rate	1.82%	1.82%
Nedbank [Member] \| Ceded And Pledged Bank Accounts As Security [Member]
Guarantor Obligations [Line Items]
Guarantee amount	$ 5.3	R 95.1
RMB Member [Member] \| Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantee amount	$ 1.8	R 33.1

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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