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Cash-settled share-based payment provision - Share-based payment expense movement in long-term provisions (Details) - ZAR (R) R / shares in Units, R in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Share-based payment transaction
Expense from cash-settled share-based payment transactions - movements in long-term provisions	R 655	R (237)	R 371
Increase in share price	37.00%
Share price	R 502.86
Share Appreciation Right (SARs)
Share-based payment transaction
Expense from cash-settled share-based payment transactions - movements in long-term provisions	R 655	(342)	(180)
SARs with no CPTs
Share-based payment transaction
Expense from cash-settled share-based payment transactions - movements in long-term provisions	117	(110)	50
SARs with CPTs
Share-based payment transaction
Expense from cash-settled share-based payment transactions - movements in long-term provisions	R 538	(232)	(230)
Long-term incentive cash settled
Share-based payment transaction
Expense from cash-settled share-based payment transactions - movements in long-term provisions		R 105	R 551

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- Definition

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

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No definition available.

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- Definition

The amount of expense arising from cash-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions in which goods or services received did not qualify for recognition as assets]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Share price

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- Definition

Percentage share price increase (decrease) during the period.

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