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LONG-TERM DEBT (Summary of Long-Term Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019	Jul. 05, 2017	Apr. 10, 2017	Jan. 19, 2017	Apr. 14, 2016
Debt Instrument [Line Items]
Debt obligations	$ 5,861.8	$ 5,883.0
Unamortized premium, net	11.9	11.9
Unamortized debt issuance costs	(47.6)	(50.2)
Carrying value of debt	5,826.1	5,844.7
Less current portion	(130.0)	(5.0)			$ (500.0)
Long-term debt, less current portion	5,696.1	5,839.7
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt obligations	125.0	145.0
Carrying value of debt	125.0	145.0
6.375% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Interest rate						6.375%
Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt obligations					$ 2,500.0
Carrying value of debt	1,748.3	1,748.8
Term Loan Facility due 2021 [Member]
Debt Instrument [Line Items]
Debt obligations	487.5	488.7
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%