RESTRUCTURING COSTS - Restructuring Roll Forward (Details) $ in Millions	12 Months Ended
	Jun. 30, 2018 USD ($)
Restructuring Reserve [Roll Forward]
Effect of exchange rates	$ 0.0
Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	328.5
Restructuring charges	122.7
Payments	(210.3)
Change in estimates	(16.2)
Non-cash utilization	(14.3)
Effect of exchange rates	12.7
Balance—June 30, 2018	223.1
Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	30.4
Restructuring charges	3.3
Payments	(19.1)
Change in estimates	(7.8)
Effect of exchange rates	0.9
Balance—June 30, 2018	7.7
Employee Severance And Employee Benefits | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	310.8
Restructuring charges	81.3
Payments	(188.5)
Change in estimates	(13.8)
Non-cash utilization	0.0
Effect of exchange rates	13.2
Balance—June 30, 2018	203.0
Employee Severance And Employee Benefits | Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	24.8
Restructuring charges	0.0
Payments	(16.9)
Change in estimates	(7.8)
Effect of exchange rates	1.0
Balance—June 30, 2018	1.1
Employee Severance | Other Restructuring 2018
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	0.0
Restructuring charges	63.7
Payments	(15.1)
Change in estimates	(0.2)
Non-cash utilization	0.0
Effect of exchange rates	0.4
Balance—June 30, 2018	48.0
Third-Party Contract Terminations | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	14.9
Restructuring charges	21.7
Payments	(17.0)
Change in estimates	(2.4)
Non-cash utilization	0.0
Effect of exchange rates	(0.2)
Balance—June 30, 2018	17.0
Third-Party Contract Terminations | Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	1.5
Restructuring charges	0.0
Payments	0.0
Change in estimates	0.0
Effect of exchange rates	0.0
Balance—June 30, 2018	1.5
Third-Party Contract Terminations | Other Restructuring 2018
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	0.0
Restructuring charges	0.2
Payments	0.0
Change in estimates	0.0
Effect of exchange rates	0.0
Balance—June 30, 2018	0.2
Fixed Asset Write-offs | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	0.0
Restructuring charges	14.3
Payments	0.0
Change in estimates	0.0
Non-cash utilization	(14.3)
Effect of exchange rates	0.0
Balance—June 30, 2018	0.0
Fixed Asset Write-offs | Other Restructuring 2018
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	0.0
Restructuring charges	1.3
Payments	0.0
Change in estimates	0.0
Non-cash utilization	(1.3)
Balance—June 30, 2018	0.0
Other Exit Costs | Other Restructuring 2018
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	0.0
Restructuring charges	3.4
Payments	(0.4)
Change in estimates	0.0
Non-cash utilization	0.3
Effect of exchange rates	0.0
Balance—June 30, 2018	3.3
Other Restructuring | Global Integration Activities
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	2.8
Restructuring charges	5.4
Payments	(4.8)
Change in estimates	0.0
Non-cash utilization	0.0
Effect of exchange rates	(0.3)
Balance—June 30, 2018	3.1
Other Restructuring | Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	4.1
Restructuring charges	3.3
Payments	(2.2)
Change in estimates	0.0
Effect of exchange rates	(0.1)
Balance—June 30, 2018	5.1
Other Restructuring | Other Restructuring 2018
Restructuring Reserve [Roll Forward]
Balance—July 1, 2017	0.0
Restructuring charges	68.6
Payments	(15.5)
Change in estimates	(0.2)
Non-cash utilization	(1.0)
Effect of exchange rates	0.4
Balance—June 30, 2018	$ 51.5