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Financial risk management and financial instruments - Expected credit losses (Details) - ZAR (R) R in Millions	Jun. 30, 2022	Jun. 30, 2021
Receivables | Impairment
Detail on expected credit losses recognised
Financial assets	R 547	R 606
Receivables | Lifetime | Impairment
Detail on expected credit losses recognised
Financial assets	445	574
Receivables | Lifetime | Impairment | Significant increase in credit risk since initial recognition
Detail on expected credit losses recognised
Financial assets	1	57
Receivables | Lifetime | Impairment | Simplified approach for trade receivables
Detail on expected credit losses recognised
Financial assets	30	9
Receivables | Lifetime | Impairment | Credit impaired
Detail on expected credit losses recognised
Financial assets	414	508
Receivables | 12-months | Impairment
Detail on expected credit losses recognised
Financial assets	R 102	R 32
Long-term receivables | AAA to A-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	51.00%	58.00%
Long-term receivables | BBB to B-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	43.00%	39.00%
Long-term receivables | CCC+ and below
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	6.00%	3.00%
Long-term receivables | Impairment
Detail on expected credit losses recognised
Financial assets	R 85	R 91
Long-term receivables | Lifetime | Impairment
Detail on expected credit losses recognised
Financial assets	41	91
Long-term receivables | Lifetime | Impairment | Significant increase in credit risk since initial recognition
Detail on expected credit losses recognised
Financial assets		50
Long-term receivables | Lifetime | Impairment | Credit impaired
Detail on expected credit losses recognised
Financial assets	41	R 41
Long-term receivables | 12-months | Impairment
Detail on expected credit losses recognised
Financial assets	R 44
Trade receivable | AAA to A-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	73.00%	72.00%
Trade receivable | BBB to B-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	24.00%	25.00%
Trade receivable | CCC+ and below
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	3.00%	3.00%
Trade receivable | Impairment
Detail on expected credit losses recognised
Financial assets	R 131	R 201
Trade receivable | Lifetime | Impairment
Detail on expected credit losses recognised
Financial assets	131	201
Trade receivable | Lifetime | Impairment | Simplified approach for trade receivables
Detail on expected credit losses recognised
Financial assets	30	9
Trade receivable | Lifetime | Impairment | Credit impaired
Detail on expected credit losses recognised
Financial assets	R 101	R 192
Other receivables | AAA to A-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	83.00%	68.00%
Other receivables | BBB to B-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	15.00%	27.00%
Other receivables | CCC+ and below
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	2.00%	5.00%
Other receivables | Impairment
Detail on expected credit losses recognised
Financial assets	R 331	R 314
Other receivables | Lifetime | Impairment
Detail on expected credit losses recognised
Financial assets	273	282
Other receivables | Lifetime | Impairment | Significant increase in credit risk since initial recognition
Detail on expected credit losses recognised
Financial assets	1	7
Other receivables | Lifetime | Impairment | Credit impaired
Detail on expected credit losses recognised
Financial assets	272	275
Other receivables | 12-months | Impairment
Detail on expected credit losses recognised
Financial assets	R 58	R 32
Cash and cash equivalents | AAA to A-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	18.00%	21.00%
Cash and cash equivalents | BBB to B-
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	81.00%	79.00%
Cash and cash equivalents | CCC+ and below
Detail on expected credit losses recognised
Percentage of financial assets at amortised cost	1.00%

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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: Financial instruments, class [member]; Financial liabilities]

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