SEGMENT REPORTING - Geographic Data (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 8,648.5	$ 9,398.0	$ 7,650.3
Long-lived assets	14,096.7	18,568.0	18,612.8
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	2,656.5	2,966.0	2,506.9
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	3,777.8	4,201.6	3,325.7
ALMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	2,214.2	2,230.4	1,817.7
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	2,418.7	2,704.6	2,220.4
Long-lived assets	5,613.2	7,408.5	7,662.4
Switzerland
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	5,444.4	8,000.2	6,899.8
Brazil
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	712.5	718.2	863.3
All other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 2,326.6	$ 2,441.1	$ 3,187.3