Derivatives - Schedule of Outstanding Foreign Exchange Contracts, Primarily Forward Contracts (Detail) - USD ($)	Dec. 31, 2015	Jun. 30, 2015
Derivative [Line Items]
Fair Value Asset/(Liability)	$ 207,146,000	$ 195,342,000
Foreign Exchange Contracts [Member]
Derivative [Line Items]
Gross Notional Value	2,236,206,000	1,884,158,000
Fair Value Asset/(Liability)	207,146,000	195,342,000
Foreign Exchange Contracts [Member] | U.S. Dollar/Euro [Member]
Derivative [Line Items]
Gross Notional Value	1,735,012,000	1,479,685,000
Fair Value Asset/(Liability)	215,788,000	208,532,000
Foreign Exchange Contracts [Member] | Indian Rupee/U.S. Dollar [Member]
Derivative [Line Items]
Gross Notional Value	217,600,000	205,150,000
Fair Value Asset/(Liability)	(1,387,000)	(935,000)
Foreign Exchange Contracts [Member] | Euro/U.S. Dollar [Member]
Derivative [Line Items]
Gross Notional Value	150,531,000	153,549,000
Fair Value Asset/(Liability)	(8,434,000)	(15,994,000)
Foreign Exchange Contracts [Member] | JPY/Euro [Member]
Derivative [Line Items]
Gross Notional Value	15,963,000	0
Fair Value Asset/(Liability)	655,000	0
Foreign Exchange Contracts [Member] | CNY/U.S. Dollar [Member]
Derivative [Line Items]
Gross Notional Value	26,810,000	0
Fair Value Asset/(Liability)	(405,000)	0
Foreign Exchange Contracts [Member] | Russian Rubles/U.S. Dollar [Member]
Derivative [Line Items]
Gross Notional Value	2,164,000	0
Fair Value Asset/(Liability)	(139,000)	0
Foreign Exchange Contracts [Member] | Swiss Franc/Euro [Member]
Derivative [Line Items]
Gross Notional Value	0	32,050,000
Fair Value Asset/(Liability)	0	4,262,000
Foreign Exchange Contracts [Member] | U.S. Dollar/Brazilian Real [Member]
Derivative [Line Items]
Gross Notional Value	8,731,000	6,148,000
Fair Value Asset/(Liability)	168,000	318,000
Foreign Exchange Contracts [Member] | Euro/Russian Rubles [Member]
Derivative [Line Items]
Gross Notional Value	4,550,000	5,963,000
Fair Value Asset/(Liability)	217,000	(865,000)
Foreign Exchange Contracts [Member] | U.S. Dollar/Russian Rubles [Member]
Derivative [Line Items]
Gross Notional Value	4,245,000	1,613,000
Fair Value Asset/(Liability)	170,000	24,000
Foreign Exchange Contracts [Member] | Russian Rubles/Euro [Member]
Derivative [Line Items]
Gross Notional Value	1,379,000	0
Fair Value Asset/(Liability)	(40,000)	0
Foreign Exchange Contracts [Member] | U.S. Dollar/Australian Dollar [Member]
Derivative [Line Items]
Gross Notional Value	729,000	0
Fair Value Asset/(Liability)	(15,000)	0
Foreign Exchange Contracts [Member] | Mexico Peso/U.S. Dollar [Member]
Derivative [Line Items]
Gross Notional Value	14,594,000	0
Fair Value Asset/(Liability)	(172,000)	0
Foreign Exchange Contracts [Member] | U.S. Dollar/Swiss Franc [Member]
Derivative [Line Items]
Gross Notional Value	26,949,000	0
Fair Value Asset/(Liability)	242,000	0
Foreign Exchange Contracts [Member] | Swiss Franc/U.S. Dollar [Member]
Derivative [Line Items]
Gross Notional Value	26,949,000	0
Fair Value Asset/(Liability)	$ 498,000	$ 0