INCOME TAXES - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) jurisdiction	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)
Income Tax Contingency [Line Items]
Tax benefit recognized		$ 40.4	$ 26.1	$ (20.1)
Reduction of gross unrecognized tax benefits		72.7	29.7	33.8
Valuation allowance		$ 179.2	81.9
Useful lives		9 years 4 months 24 days
Net operating losses not reflected as part of net deferred tax assets		$ 11.0
Tax loss carry forwards subject to expiration		600.2
Unrecognized tax benefits		228.9	342.6	400.5	$ 331.4
Unrecognized tax benefits that would impact effective tax rate		122.8
Accrued interest and penalties		131.9	182.9
Interest accrued		1.2	(4.4)	(1.7)
Penalties accrued		$ 0.1	(1.0)	$ 0.0
Number of tax jurisdictions (more than) | jurisdiction		35
Income tax expense (benefit)		$ 51.4	62.0
Amount of decrease in UTBs		15.5
Undistributed earnings of foreign subsidiaries		2,426.0
Other Noncurrent Liabilities
Income Tax Contingency [Line Items]
Accrued interest and penalties		$ 9.9	15.2
Intellectual Property
Income Tax Contingency [Line Items]
Useful lives		20 years
Intellectual Property | Prepaid Expenses and Other Current Assets
Income Tax Contingency [Line Items]
Prepaid income taxes		$ 7.6	135.8
Intellectual Property | Other Noncurrent Assets
Income Tax Contingency [Line Items]
Prepaid income taxes		$ 7.6	$ 143.4
IRS | Domestic Tax Authority
Income Tax Contingency [Line Items]
Valuation allowance	$ 111.2
IRS | Domestic Tax Authority | Settlement with Taxing Authority
Income Tax Contingency [Line Items]
Tax benefit recognized	194.4
Reduction of gross unrecognized tax benefits	29.7
IRS | Domestic Tax Authority | Settlement with Taxing Authority | Trademarks
Income Tax Contingency [Line Items]
Recognition of additional deferred tax assets	$ 164.7