ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS - Revenue recognition (Details) - revenue_stream	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Accounting Policies [Abstract]
Number of revenue streams	4
Disaggregation of Revenue [Line Items]
Right of return period	70 days
Description of timing	As a practical expedient, we do not account for significant financing components if the period between when we transfer the promised good or service to the customer and when the customer pays for the product or service will be one year or less
Capitalized contract cost, amortization period	6 years
Minimum
Disaggregation of Revenue [Line Items]
Payment period	30 days
Maximum
Disaggregation of Revenue [Line Items]
Payment period		60 days