RESTRUCTURING COSTS - Restructuring Roll Forward (Details) - Transformation Plan $ in Millions	3 Months Ended
	Sep. 30, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 132.6
Restructuring charges	33.4
Payments	(19.6)
Changes in estimates	(2.2)
Non-cash utilization	0.4
Adjustment for liabilities reclassified to held for sale	(2.2)
Effect of exchange rates	4.0
Ending balance	146.4
Severance and Employee Benefits
Restructuring Reserve [Roll Forward]
Beginning balance	131.9
Restructuring charges	33.5
Payments	(19.6)
Changes in estimates	(2.2)
Non-cash utilization	0.0
Adjustment for liabilities reclassified to held for sale	(2.2)
Effect of exchange rates	4.0
Ending balance	145.4
Fixed Asset Write-offs
Restructuring Reserve [Roll Forward]
Beginning balance	0.0
Restructuring charges	(0.4)
Payments	0.0
Changes in estimates	0.0
Non-cash utilization	0.4
Adjustment for liabilities reclassified to held for sale	0.0
Effect of exchange rates	0.0
Ending balance	0.0
Other Exit Costs
Restructuring Reserve [Roll Forward]
Beginning balance	0.7
Restructuring charges	0.3
Payments	0.0
Changes in estimates	0.0
Non-cash utilization	0.0
Adjustment for liabilities reclassified to held for sale	0.0
Effect of exchange rates	0.0
Ending balance	$ 1.0