The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2019-01-01
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B16&doctype=Appendix&subtype=B
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Period Type:	instant

Equity accounted investments - Summary (Details) - ZAR (R) R in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
EQUITY-ACCOUNTED INVESTMENTS
Investments accounted for using equity method	R 4,038.8	R 3,733.9	R 2,244.1
Mimosa
EQUITY-ACCOUNTED INVESTMENTS
Investments accounted for using equity method	2,687.7	2,492.4	2,012.9	R 2,049.3
Peregrine Metals Ltd. [Member]
EQUITY-ACCOUNTED INVESTMENTS
Investments accounted for using equity method	954.1	978.0
Rand Refinery
EQUITY-ACCOUNTED INVESTMENTS
Investments accounted for using equity method	396.9	239.3	198.4	R 72.4
Other equity-accounted investments
EQUITY-ACCOUNTED INVESTMENTS
Investments accounted for using equity method	R 0.1	R 24.2	R 32.8