RESTRUCTURING COSTS - Restructuring Roll Forward (Details) $ in Millions	6 Months Ended
	Dec. 31, 2017 USD ($)
Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	$ 328.5
Restructuring charges	43.1
Payments	(75.8)
Changes in estimates	(6.2)
Non-cash utilization	(0.2)
Effect of exchange rates	17.3
Balance—December 31, 2017	306.7
Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	30.4
Restructuring charges	2.1
Payments	(17.7)
Changes in estimates	(5.4)
Effect of exchange rates	1.0
Balance—December 31, 2017	10.4
Severance and Employee Benefits | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	310.8
Restructuring charges	30.4
Payments	(68.0)
Changes in estimates	(6.2)
Non-cash utilization	0.0
Effect of exchange rates	17.4
Balance—December 31, 2017	284.4
Severance and Employee Benefits | Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	24.8
Restructuring charges	0.0
Payments	(16.5)
Changes in estimates	(5.4)
Effect of exchange rates	0.8
Balance—December 31, 2017	3.7
Third-Party Contract Terminations | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	14.9
Restructuring charges	9.4
Payments	(5.4)
Changes in estimates	0.0
Non-cash utilization	0.0
Effect of exchange rates	(0.1)
Balance—December 31, 2017	18.8
Third-Party Contract Terminations | Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	1.5
Restructuring charges	0.0
Payments	0.0
Changes in estimates	0.0
Effect of exchange rates	0.0
Balance—December 31, 2017	1.5
Fixed Asset Write-offs | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	0.0
Restructuring charges	0.2
Payments	0.0
Changes in estimates	0.0
Non-cash utilization	(0.2)
Effect of exchange rates	0.0
Balance—December 31, 2017	0.0
Other Exit Costs | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	2.8
Restructuring charges	3.1
Payments	(2.4)
Changes in estimates	0.0
Non-cash utilization	0.0
Effect of exchange rates	0.0
Balance—December 31, 2017	3.5
Other Exit Costs | Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	4.1
Restructuring charges	2.1
Payments	(1.2)
Changes in estimates	0.0
Effect of exchange rates	0.2
Balance—December 31, 2017	$ 5.2