Deferred tax - Reconciliation (Details) - ZAR (R) R in Millions	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reconciliation
Deferred tax liability (asset) at beginning of period	R 22,778	R 20,302
Current year charge	(851)	2,421
Current year charge - per the income statement	(1,075)	1,361
Current year charge - per the statement of comprehensive income	224	1,060
Foreign exchange differences recognised in income statement	34	(148)
Translation of foreign operations	(149)	203
Deferred tax liability (asset) at end of period	21,812	22,778
Net deferred tax assets and liabilities [abstract]
Deferred tax assets			R (4,096)	R (3,082)
Deferred tax liabilities			25,908	25,860
Deferred tax liabilities	R 22,778	R 20,302	R 21,812	R 22,778

The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

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The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

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The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]

+ References

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The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The amount of deferred tax assets net of deferred tax liabilities, when the absolute amount of deferred tax assets is greater than the absolute amount of deferred tax liabilities. [Refer: Deferred tax assets; Deferred tax liabilities]

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The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

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The amount of foreign exchange differences recognised in the income statement relating to deferred tax

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