Other Expenses, Net - Components of Other Expenses, Net (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Other Expenses [Abstract]
Interest expense on borrowings	$ 4.6	$ 3.5
Interest income	(0.2)	(0.5)
Foreign currency exchange (gain) loss	(1.2)	0.8
Other, net	1.7	0.5
Other expenses, net	$ 4.9	$ 4.3