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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2017	Jun. 30, 2016
New Accounting Pronouncement, Early Adoption [Line Items]
Employee service share-based compensation, tax benefit realized from exercise of stock options	$ (0.2)	$ (7.9)
Prepaid expenses and other current assets | Accounting Standards Update 2015-03
New Accounting Pronouncement, Early Adoption [Line Items]
Debt issuance costs, net			$ (0.3)
Other noncurrent assets | Accounting Standards Update 2015-03
New Accounting Pronouncement, Early Adoption [Line Items]
Debt issuance costs, net			(0.7)
Short-term debt | Accounting Standards Update 2015-03
New Accounting Pronouncement, Early Adoption [Line Items]
Debt issuance costs, net			0.3
Long-term debt | Accounting Standards Update 2015-03
New Accounting Pronouncement, Early Adoption [Line Items]
Debt issuance costs, net			$ 0.7

X

- Definition

Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount

+ References

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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