SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recently Adopted Accounting Pronouncements (Details) - USD ($) $ in Millions		Sep. 30, 2016	Jun. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unamortized financing costs	[1]	$ 61.1	$ 64.6
Other Noncurrent Assets | Accounting Standards Update 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unamortized financing costs			(64.6)
Long-term Debt | Accounting Standards Update 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unamortized financing costs			$ 64.6

[1] Consists of unamortized debt issuance costs of $21.4 and $22.7 for the Revolving Credit Facility, $28.6, and $30.3 for the Term Loan A Facility and $11.1, and $11.6 for the Term Loan B Facility as of September 30, 2016 and June 30, 2016, respectively.