COMMITMENTS AND CONTINGENCIES - OTHER COMMITMENTS (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2018 USD ($)
Product Purchases for Resale Commitments
Product purchases for resale commitments:
2019	$ 1,762,782
2020	339,016
2021	1,459
Information Technology Services Commitments
Product purchases for resale commitments:
Remaining amount of long-term purchase commitment	325,000
Termination fee associated with long-term purchase commitment if terminated in next fiscal year	$ 76,700