CONDENSED CONSOLIDATING FINANCIAL INFORMATION (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Jun. 30, 2016
Condensed Financial Statements Captions [Line Items]
Debt obligations	$ 5,630.0	$ 4,167.4
6.00% Senior Notes due 2023 [Member]
Condensed Financial Statements Captions [Line Items]
Debt obligations	1,430.0	1,430.0
6.00% Senior Notes due 2023 [Member] | Unsecured Debt [Member]
Condensed Financial Statements Captions [Line Items]
Debt obligations	1,430.0
6.375% Senior Notes due 2025 [Member]
Condensed Financial Statements Captions [Line Items]
Debt obligations	900.0	$ 900.0
6.375% Senior Notes due 2025 [Member] | Unsecured Debt [Member]
Condensed Financial Statements Captions [Line Items]
Debt obligations	900.0
5.75% Senior Unsecured Notes due 2027 [Member]
Condensed Financial Statements Captions [Line Items]
Debt obligations	800.0
5.75% Senior Unsecured Notes due 2027 [Member] | Unsecured Debt [Member]
Condensed Financial Statements Captions [Line Items]
Debt obligations	$ 800.0