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SEGMENT REPORTING - Narrative (Details) $ in Millions	12 Months Ended
SEGMENT REPORTING - Narrative (Details) $ in Millions	Jun. 30, 2019 unit	Jun. 30, 2019 USD ($)	Jun. 30, 2019 segment	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments	3		3
Number of operating segments \| segment			3
Net revenues		$ 8,648.5		$ 9,398.0	$ 7,650.3
Depreciation and amortization		736.0		737.0	555.1
Operating (loss) income		(3,471.5)		153.3	(420.9)
Interest expense, net		275.7		265.0	218.6
Loss on early extinguishment of debt		0.0		10.7	0.0
Other expense, net		30.9		30.1	18.5
Loss before income taxes		(3,778.1)		(152.5)	(658.0)
Luxury
Segment Reporting Information [Line Items]
Net revenues		3,294.3		3,210.5	2,566.6
Consumer Beauty
Segment Reporting Information [Line Items]
Net revenues		3,539.3		4,268.1	3,688.2
Professional Beauty
Segment Reporting Information [Line Items]
Net revenues		1,814.9		1,919.4	1,395.5
Operating Segments \| Luxury
Segment Reporting Information [Line Items]
Depreciation and amortization		271.0		253.3	203.5
Operating (loss) income		232.8		248.7	158.0
Operating Segments \| Consumer Beauty
Segment Reporting Information [Line Items]
Depreciation and amortization		329.8		340.4	256.2
Operating (loss) income		(3,598.7)		278.9	261.2
Operating Segments \| Professional Beauty
Segment Reporting Information [Line Items]
Depreciation and amortization		135.2		143.3	95.4
Operating (loss) income		122.1		119.4	78.5
Corporate
Segment Reporting Information [Line Items]
Depreciation and amortization		0.0		0.0	0.0
Operating (loss) income		$ (227.7)		$ (493.7)	$ (918.6)