RESTRUCTURING COSTS - Restructuring Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 173.2	$ 372.2	$ 86.9
Restructuring costs incurred	3.9
Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring costs	106.5	364.2	0.0
Restructuring charges	122.7
Restructuring costs incurred	470.7
Acquisition Integration Program
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(4.5)	2.3	42.3
Restructuring charges	3.3
Restructuring costs incurred	55.4
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	71.2	5.7	$ 44.6
Cost of sales | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring charges	401.4
Selling, general and administrative | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring charges	18.9
Other Exit Costs | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8.7
Employee Severance | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring costs	67.5	333.9
Third-Party Contract Terminations | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring costs	19.3	22.4
Restructuring charges	21.7
Third-Party Contract Terminations | Acquisition Integration Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.0
Third-Party Contract Terminations | Other Exit Costs | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring charges	41.7
Facility Closing | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring costs	14.3	4.6
Other Restructuring | Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring costs	5.4	$ 3.3
Restructuring charges	5.4
Other Restructuring | Acquisition Integration Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3.3