SEGMENT REPORTING - Geographic Data (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 9,398.0	$ 7,650.3	$ 4,349.1
Long-lived assets	18,568.0	18,612.8	4,910.3
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	2,966.0	2,506.9	1,413.0
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	4,201.6	3,325.7	1,924.6
ALMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	2,230.4	1,817.7	1,011.5
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	2,704.6	2,220.4	1,256.0
Long-lived assets	7,408.5	7,662.4	2,688.7
Switzerland
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	8,000.2	6,899.8	508.0
Brazil
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	718.2	863.3	882.7
All other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 2,441.1	$ 3,187.3	$ 830.9