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Financial risk management and financial instruments - Summary of Financial Instruments (Details) - ZAR (R) R in Millions	Jun. 30, 2021	Jun. 30, 2020
Listed long-term debt
Financial risk management and financial instruments
Financial liabilities - fair value	R 72,226	R 50,701
Listed long-term debt | Liabilities, Amortised cost
Financial risk management and financial instruments
Financial liabilities - carrying value	68,405	56,760
Unlisted long-term debt
Financial risk management and financial instruments
Financial liabilities - fair value	34,274	109,724
Unlisted long-term debt | Liabilities, Amortised cost
Financial risk management and financial instruments
Financial liabilities - carrying value	34,238	110,437
Lease liabilities | Liabilities, Amortised cost
Financial risk management and financial instruments
Financial liabilities - carrying value	15,677	17,719
Short-term debt and bank overdraft
Financial risk management and financial instruments
Financial liabilities - fair value	303	22,533
Short-term debt and bank overdraft | Liabilities, Amortised cost
Financial risk management and financial instruments
Financial liabilities - carrying value	303	22,533
Long- and short-term financial liabilities
Financial risk management and financial instruments
Financial liabilities - fair value	5,173	9,891
Long- and short-term financial liabilities | Liabilities, At fair value through profit and loss
Financial risk management and financial instruments
Financial liabilities - carrying value	3,070	5,748
Long- and short-term financial liabilities | Liabilities, Designated hedging instrument at fair value
Financial risk management and financial instruments
Financial liabilities - carrying value	2,103	4,143
Trade and other payables
Financial risk management and financial instruments
Financial liabilities - fair value	22,637	21,164
Trade and other payables | Liabilities, Amortised cost
Financial risk management and financial instruments
Financial liabilities - carrying value	22,637	21,164
Investments in listed securities
Financial risk management and financial instruments
Financial assets - fair value	466	498
Investments in listed securities | Assets, Designated at fair value through other comprehensive income
Financial risk management and financial instruments
Financial assets - carrying value	466	498
Investments in unlisted securities
Financial risk management and financial instruments
Financial assets - fair value	8	13
Investments in unlisted securities | Assets, Designated at fair value through other comprehensive income
Financial risk management and financial instruments
Financial assets - carrying value	8	13
Other long-term investments
Financial risk management and financial instruments
Financial assets - fair value	1,422	1,415
Other long-term investments | Assets, Amortised cost
Financial risk management and financial instruments
Financial assets - carrying value	1,422	1,415
Long-term receivables
Financial risk management and financial instruments
Financial assets - fair value	3,879	5,799
Long-term receivables | Assets, Amortised cost
Financial risk management and financial instruments
Financial assets - carrying value	3,879	5,799
Long and short-term financial assets
Financial risk management and financial instruments
Financial assets - fair value	2,323	645
Long and short-term financial assets | Assets, At fair value through profit and loss
Financial risk management and financial instruments
Financial assets - carrying value	2,323	645
Trade and other receivables
Financial risk management and financial instruments
Financial assets - fair value	27,218	22,066
Trade and other receivables | Assets, Amortised cost
Financial risk management and financial instruments
Financial assets - carrying value	27,218	22,066
Cash and cash equivalents
Financial risk management and financial instruments
Financial assets - fair value	31,231	34,739
Cash and cash equivalents | Assets, Amortised cost
Financial risk management and financial instruments
Financial assets - carrying value	R 31,231	R 34,739

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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