VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 48.1	$ 81.8	$ 58.5
Balance Received through Acquisition	0.0	0.0	0.0
Charged to Costs and Expenses	55.4	11.6	16.3
Deductions	(12.4)	(45.3)	7.0
Balance at End of Period	91.1	48.1	81.8
Allowance for customer returns
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	56.3	81.1	67.3
Balance Received through Acquisition	0.0	0.0	10.1
Charged to Costs and Expenses	160.5	161.2	169.8
Deductions	(149.0)	(186.0)	(166.1)
Balance at End of Period	67.8	56.3	81.1
Deferred tax valuation allowances
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	67.7	104.6	60.3
Balance Received through Acquisition	0.0	0.0	0.0
Charged to Costs and Expenses	11.4	4.6	54.7
Deductions	(24.2)	(41.5)	(10.4)
Balance at End of Period	$ 54.9	$ 67.7	$ 104.6