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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

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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 + Details
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