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Financial risk management and financial instruments - Fair Value (Details) - ZAR (R) R in Millions | 12 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017
Financial risk management and financial instruments |  |
Transfers from Level 1 to Level 2, assets | R 0 |
Transfers from Level 2 to Level 1, assets | 0 |
Transfers into Level 3, assets | 0 |
Transfers out of Level 3, assets | 0 |
Transfers from Level 1 to Level 2, liabilities | 0 |
Transfers from Level 2 to Level 1, liabilities | 0 |
Transfers into Level 3, liabilities | 0 |
Transfers out of Level 3, liabilities | 0 |
Listed long-term debt |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 13,345 | R 13,365
Listed long-term debt | Level 1 |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 13,345 |
Unlisted long-term debt |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 95,984 | 68,896
Unlisted long-term debt | Level 3 |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 95,984 |
Short-term debt and bank overdraft |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 2,035 | 2,986
Short-term debt and bank overdraft | Level 3 |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 2,035 |
Derivative liabilities and guarantees (Long- and short-term financial liabilities) |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 2,059 | 1,473
Derivative liabilities and guarantees (Long- and short-term financial liabilities) | Level 2 |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 2,059 |
Trade and other payables |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 26,518 | 26,131
Trade and other payables | Level 3 |  |
Financial risk management and financial instruments |  |
Financial liabilities - fair value | 26,518 |
Investments in listed securities |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 682 | 681
Investments in listed securities | Level 1 |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 682 |
Investments in unlisted securities |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 244 | 225
Investments in unlisted securities | Level 3 |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 244 |
Other long-term investments |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 25 | 81
Other long-term investments | Level 3 |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 25 |
Long-term receivables |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 3,786 | 3,737
Long-term receivables | Level 3 |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 3,883 |
Derivative assets (Long and short-term financial assets) |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 1,827 | 2,739
Derivative assets (Long and short-term financial assets) | Level 2 |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 1,827 |
Trade and other receivables |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 26,648 | 24,675
Trade and other receivables | Level 3 |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 26,648 |
Cash and cash equivalents |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | 17,128 | R 29,446
Cash and cash equivalents | Level 1 |  |
Financial risk management and financial instruments |  |
Financial assets - fair value | R 17,128 |

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