PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Due from related party	$ 153.4	$ 0.0
Value added tax, sales and other non-income tax assets	84.4	83.1
Expected income tax refunds, credits and prepaid income taxes	79.4	134.4
Prepaid marketing, copyright and agency fees	78.8	91.1
Non-trade receivables	25.3	53.4
Prepaid rent, leases, maintenance and insurance	12.9	15.6
Other	39.7	34.0
Total prepaid expenses and other current assets	$ 473.9	$ 411.6