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LONG-TERM DEBT (Summary of Long-Term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018	Jul. 05, 2017	Apr. 10, 2017	Jan. 19, 2017
Debt Instrument [Line Items]
Debt obligations	$ 5,883.0	$ 5,743.1
Unamortized premium, net	11.9	11.6
Unamortized debt issuance costs	(50.2)	(59.6)
Carrying value of debt	5,844.7	5,695.1
Less current portion	(5.0)	(5.0)
Long-term debt, less current portion	5,839.7	5,690.1
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt obligations	145.0
Carrying value of debt	145.0	0.0
Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt obligations					$ 2,500.0
Carrying value of debt	1,748.8	1,751.3
Term Loan Facility due 2021 [Member]
Debt Instrument [Line Items]
Debt obligations	488.7	493.8
Term Loan Facility B-2 [Member]
Debt Instrument [Line Items]
Debt obligations	1,269.3	1,269.3
Unsecured Notes [Member] \| 6.00% Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Debt obligations	$ 1,430.0	1,430.0
Interest rate	6.00%
Unsecured Notes [Member] \| 6.375% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Debt obligations	$ 900.0	900.0
Interest rate	6.375%
Unsecured Notes [Member] \| 5.75% Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Debt obligations	$ 1,650.0	$ 1,650.0	$ 300.0	$ 550.0
Interest rate	5.75%		5.75%	5.75%