The weighted average of interest and other costs that an entity incurs in connection with the borrowing of funds applicable to the borrowings of the entity that are outstanding during the period, other than borrowings made specifically for the purpose of obtaining a qualifying asset. [Refer: Weighted average [member]; Borrowings]

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Property, plant and equipment - Depreciation ranges (Details)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Property, plant and equipment
Capitalisation rate	4.60%	4.90%
Minimum \| Buildings and improvements
Property, plant and equipment
Depreciation rate for property, plant and equipment	1.00%
Minimum \| Retail convenience centres
Property, plant and equipment
Depreciation rate for property, plant and equipment	3.00%
Minimum \| Plant
Property, plant and equipment
Depreciation rate for property, plant and equipment	2.00%
Minimum \| Equipment
Property, plant and equipment
Depreciation rate for property, plant and equipment	3.00%
Minimum \| Vehicles
Property, plant and equipment
Depreciation rate for property, plant and equipment	5.00%
Maximum \| Buildings and improvements
Property, plant and equipment
Depreciation rate for property, plant and equipment	17.00%
Maximum \| Retail convenience centres
Property, plant and equipment
Depreciation rate for property, plant and equipment	5.00%
Maximum \| Plant
Property, plant and equipment
Depreciation rate for property, plant and equipment	50.00%
Maximum \| Equipment
Property, plant and equipment
Depreciation rate for property, plant and equipment	91.00%
Maximum \| Vehicles
Property, plant and equipment
Depreciation rate for property, plant and equipment	33.00%