Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Income tax expense	$ 27,772,000	$ 18,676,000
Effective tax rate	25.10%	28.60%
Unrecognized tax benefits	43,500,000
Interest related to unrecognized tax benefits	2,300,000
Change in tax reserves on uncertain tax positions	(700,000)
Change in interest expense on uncertain tax positions	$ (100,000)