EMPLOYEE BENEFIT PLANS - Reconciliations of Level 3 Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Change in plan assets
Fair value of plan assets—July 1	$ 274.6	$ 268.9
Return on plan assets	24.6	3.4
Effect of exchange rates	13.1	1.9
Fair value of plan assets—June 30	159.1	274.6
International | Pension Plans
Change in plan assets
Fair value of plan assets—July 1	274.1	268.5
Return on plan assets	24.6	3.4
Effect of exchange rates	13.1	1.9
Fair value of plan assets—June 30	159.1	274.1
International | Pension Plans | Level 3
Change in plan assets
Fair value of plan assets—July 1	148.0	143.2
Return on plan assets	3.6	4.3
Purchases, sales and settlements, net	(82.4)	(2.8)
Effect of exchange rates	6.0	3.3
Fair value of plan assets—June 30	$ 75.2	$ 148.0