Materials, energy and consumables used (Details) - ZAR (R) R in Millions	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Materials, energy and consumables used
Cost of raw materials	R 126,338	R 100,607	R 71,016
Cost of energy and other consumables used in production process	25,959	23,392	14,354
Materials, energy and consumables used	152,297	123,999	R 85,370
Carbon tax expense	R 1,700	R 1,200

The amount of raw materials and consumables used in the production process or in the rendering of services. [Refer: Current raw materials]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 102
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_102&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 99
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_99&doctype=Standard
-URIDate 2022-03-24

Name:	ifrs-full_RawMaterialsAndConsumablesUsed
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration