INCOME TAXES - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Income Tax Contingency [Line Items]
Cumulative undistributed earnings attributable to international operations	$ 741.0	$ 608.4	$ 741.0	$ 608.4
Effective tax rate	13.20%	18.70%	13.70%	16.90%
Amount of unrecognized tax benefits that, if recognized, would impact effective tax rate	7.0	9.3	7.0	9.3
Total amount of interest and penalties accrued	1.5	1.4	1.5	1.4
Income Tax Holiday, Description			Both of these agreements have been extended to provide, in the case of RUSM, an indefinite period of exemption and, in the case of RUSVM, exemption until 2037.
Tax Adjustments, Settlements, and Unusual Provisions			$ 2.6