Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Schedule Of Income Taxes [Line Items]
Income tax expense	$ 31,419	$ 19,346	$ 98,019	$ 76,250
Effective tax rate	26.10%	21.60%	25.30%	22.10%
Unrecognized tax benefits	$ 57,800		$ 57,800
Interest related to unrecognized tax benefits			2,600
Tax reserves on uncertain tax positions	700		2,100
Unrecognized tax benefits that impact effective tax rate	6,000		6,000
Unrecognized tax benefit, decrease amount			(2,800)	$ (500)
Indian Tax Authorities [Member]
Schedule Of Income Taxes [Line Items]
Tax reserves on uncertain tax positions	100		2,900
German Tax Authorities [Member]
Schedule Of Income Taxes [Line Items]
Tax reserves on uncertain tax positions			2,900
Increase (decrease) in interest expense on prior year exposures of uncertain tax positions			$ (1,400)
Germany Settlement [Member]
Schedule Of Income Taxes [Line Items]
Increase (decrease) in interest expense on prior year exposures of uncertain tax positions	100
Brazilian Settlement [Member]
Schedule Of Income Taxes [Line Items]
Increase (decrease) in interest expense on prior year exposures of uncertain tax positions	100
Indian Settlement [Member]
Schedule Of Income Taxes [Line Items]
Increase (decrease) in interest expense on prior year exposures of uncertain tax positions	$ (100)