INTANGIBLE ASSETS (Schedule of Identifiable Acquisition Related Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019
Schedule Of Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets	$ 1,554.0	$ 1,601.0
Accumulated Amortization	(478.7)	(500.2)
Total Net	1,075.3	1,100.8
Intangible Assets, Gross (Excluding Goodwill)	1,571.5	1,619.0
Intangible Assets, Net	1,092.8	1,118.8
Certifications [Member]
Schedule Of Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount, Indefinite-Lived Intangibles	3.5	3.5
Intangible Assets, Net	3.5	3.5
Indefinite-Lived Underlying Rights [Member]
Schedule Of Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount, Indefinite-Lived Intangibles	14.0	14.5
Intangible Assets, Net	14.0	14.5
Customer Relationships [Member]
Schedule Of Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets	1,550.6	1,597.6
Accumulated Amortization	(477.0)	(498.7)
Total Net	1,073.6	1,098.9
Finite-Lived Underlying Rights [Member]
Schedule Of Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount, Finite-Lived Intangible Assets	3.4	3.4
Accumulated Amortization	(1.7)	(1.5)
Total Net	$ 1.7	$ 1.9