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BUSINESS COMBINATIONS - P&G Beauty Business Acquisition (Details) - USD ($) shares in Millions, $ in Millions	Oct. 01, 2016	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Goodwill		$ 5,073.8	$ 8,607.1		$ 8,555.5
Galleria
Business Acquisition [Line Items]
Total consideration to acquire business	$ 11,570.4
Total equity consideration transferred	9,628.6
Amount of assumed debt	$ 1,941.8
Goodwill				$ 5,563.9	$ 5,528.4
Galleria \| Majority Shareholders \| Pre-Merger Holders of Galleria Common Stock
Business Acquisition [Line Items]
Number of shares received by former holders of Galleria common stock (in shares)	409.7
Galleria \| Luxury
Business Acquisition [Line Items]
Goodwill		1,889.8
Galleria \| Consumer Beauty
Business Acquisition [Line Items]
Goodwill		3,188.1
Galleria \| Professional Beauty
Business Acquisition [Line Items]
Goodwill		$ 486.0