EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance—July 1, 2015	$ 455.0		$ 455.0		$ 984.7
Total other comprehensive income (loss), net of tax	35.5	$ (122.9)	24.2	$ (242.5)
Balance—March 31, 2016	455.0		455.0
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance—July 1, 2015	(250.9)		(250.9)		(274.0)
Other comprehensive (loss) income before reclassifications			23.0
Less: Net amounts reclassified from AOCI			(0.1)
Total other comprehensive income (loss), net of tax			23.1
Balance—March 31, 2016	(250.9)		(250.9)
Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance—July 1, 2015	(14.7)		(14.7)		(0.1)
Other comprehensive (loss) income before reclassifications			(14.7)
Less: Net amounts reclassified from AOCI			(0.1)
Total other comprehensive income (loss), net of tax			(14.6)
Balance—March 31, 2016	(14.7)		(14.7)
Foreign Currency Translation Adjustments, Loss on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance—July 1, 2015	(17.0)		(17.0)		0.0
Other comprehensive (loss) income before reclassifications			(17.0)
Less: Net amounts reclassified from AOCI			0.0
Total other comprehensive income (loss), net of tax			(17.0)
Balance—March 31, 2016	(17.0)		(17.0)
Foreign Currency Translation Adjustments, Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance—July 1, 2015	(194.8)		(194.8)		(249.3)
Other comprehensive (loss) income before reclassifications			54.5
Less: Net amounts reclassified from AOCI			0.0
Total other comprehensive income (loss), net of tax			54.5
Balance—March 31, 2016	(194.8)		(194.8)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance—July 1, 2015	(24.4)		(24.4)		$ (24.6)
Other comprehensive (loss) income before reclassifications			0.2
Less: Net amounts reclassified from AOCI			0.0
Total other comprehensive income (loss), net of tax			0.2
Balance—March 31, 2016	$ (24.4)		$ (24.4)