Financial Risk Management - Capital Risk Management, Net Debt (Details) - ZAR (R) R in Millions	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Financial Instruments [Abstract]
Cash and cash equivalents	R 993	R 706	R 1,246	R 1,256
Borrowings	(5,915)	(5,614)
Net debt	R (4,922)	R (4,908)

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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