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Financial Risk Management - Liquidity Risk (Details) - Liquidity risk - ZAR (R) R in Millions | Jun. 30, 2019 | Jun. 30, 2018
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Current |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Trade and other payables (excluding non-financial liabilities) | R 930 | R 769
Derivative financial liabilities | 280 | 124
Financial liabilities | 1,693 | 1,595
Due between 0 to six months |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Borrowings | 242 | 702
Due between six to 12 months |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Borrowings | 241 | 0
Expiring after one year |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Other non-current liabilities | 2 | 1
Derivative financial liabilities | 194 | 95
Financial liabilities | 6,398 | 5,682
Due between one to two years |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Borrowings | 4,578 | 584
Due between two to four years |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Borrowings | R 1,624 | R 5,002

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