TRADE RECEIVABLES - FACTORING (Details) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Mar. 19, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables Purchase Agreement, aggregate facility limit				$ 150,000,000.0
Receivables Purchase Agreement, recourse obligation retained, percentage (up to)				10.00%
Factored Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables, factored	$ 547,900,000	$ 300,100,000
Trade receivables, factoring fees	2,400,000	600,000	$ 700,000
Factored Receivable | Trade Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables, factored, amounts due from factors	$ 8,600,000	$ 9,900,000