Significant Accounting Policies - Depreciation Recorded Over Estimated Useful Lives of Assets (Detail)	12 Months Ended
	Jun. 30, 2020
Building
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	40 years
Minimum | Property, equipment, furniture, fixtures and vehicles
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	3 years
Minimum | Technical equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	3 years
Maximum | Property, equipment, furniture, fixtures and vehicles
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	7 years
Maximum | Technical equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets	5 years