GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Changes in Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020
Goodwill [Roll Forward]
Gross beginning balance	$ 8,014.0
Accumulated impairments	(4,040.1)	$ (4,040.1)
Net beginning balance	3,973.9
Foreign currency translation	49.8
Gross ending balance	8,063.8
Accumulated impairments	(4,040.1)	(4,040.1)
Net ending balance	4,023.7
Americas
Goodwill [Roll Forward]
Gross beginning balance	3,112.2
Accumulated impairments	(1,768.7)	(1,768.7)
Net beginning balance	1,343.5
Foreign currency translation	11.9
Gross ending balance	3,124.1
Accumulated impairments	(1,768.7)	(1,768.7)
Net ending balance	1,355.4
EMEA
Goodwill [Roll Forward]
Gross beginning balance	3,638.9
Accumulated impairments	(1,857.3)	(1,857.3)
Net beginning balance	1,781.6
Foreign currency translation	24.4
Gross ending balance	3,663.3
Accumulated impairments	(1,857.3)	(1,857.3)
Net ending balance	1,806.0
Asia Pacific
Goodwill [Roll Forward]
Gross beginning balance	1,262.9
Accumulated impairments	(414.1)	(414.1)
Net beginning balance	848.8
Foreign currency translation	13.5
Gross ending balance	1,276.4
Accumulated impairments	(414.1)	$ (414.1)
Net ending balance	$ 862.3