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Financial risk management and financial instruments - Statement of Financial Position and Income Statement Impact (Details) - ZAR (R) R in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Financial risk management and financial instruments
Financial assets	R 85,517	R 86,216
Financial liabilities	(155,495)	(168,266)
Net gain/(loss) on derivative instruments	2,003	2,364	R 3,287
Commodity and currency derivatives, Embedded derivatives and Non-derivative financial instruments
Financial risk management and financial instruments
Financial assets	6,395	3,978
Financial liabilities	(66)	(619)
Net gain/(loss) on derivative instruments	2,004	2,364	3,287
Crude oil put options
Financial risk management and financial instruments
Financial assets	1,055	279
Net gain/(loss) on derivative instruments	(391)	(953)	(507)
Crude oil zero cost collar
Financial risk management and financial instruments
Net gain/(loss) on derivative instruments			3,953
Crude oil futures
Financial risk management and financial instruments
Net gain/(loss) on derivative instruments		(180)	401
Ethane swap options
Financial risk management and financial instruments
Net gain/(loss) on derivative instruments		(17)	(272)
Coal swap options
Financial risk management and financial instruments
Net gain/(loss) on derivative instruments			1,099
Other commodity derivatives
Financial risk management and financial instruments
Financial assets		5
Financial liabilities	(30)	(7)
Net gain/(loss) on derivative instruments	(36)	(63)	180
Forward exchange contracts
Financial risk management and financial instruments
Financial assets	696	711
Financial liabilities	(15)	(11)
Net gain/(loss) on derivative instruments	1,132	1,091	(1,339)
Foreign exchange zero cost collars
Financial risk management and financial instruments
Financial assets	609	302
Net gain/(loss) on derivative instruments	323	810	(301)
Convertible bond embedded derivative
Financial risk management and financial instruments
Financial liabilities	(7)	(59)
Net gain/(loss) on derivative instruments	52	1,233	867
Oxygen supply contract embedded derivative assets and liabilities
Financial risk management and financial instruments
Financial assets	863	508
Financial liabilities	(14)	(542)
Net gain/(loss) on derivative instruments	924	442	R (794)
Investments at fair value through profit or loss
Financial risk management and financial instruments
Financial assets	R 3,172	R 2,173

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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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: Classes of financial instruments [domain]; Financial liabilities]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) 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 deliver 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, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are 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. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Classes of financial instruments [domain]; Financial assets; Derivatives [member]]

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