Gains (Losses) on Derivative Financial Instruments (Detail) (USD $) In Thousands	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Nondesignated | Costless Collar Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivative financial instruments that were recorded in the Consolidated Statement of Income	$ 7,615	$ (3,536)
Nondesignated | Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivative financial instruments that were recorded in the Consolidated Statement of Income	(31,392)	15,803
Derivatives Designated as Hedging Instruments | Cross-Currency Swap Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivative and non-derivative financial instruments that were recorded in accumulated other comprehensive income (loss) in the Consolidated Balance Sheet	15,641	(14,821)
Non Derivative Financial Instruments | Foreign Denominated Debt
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivative and non-derivative financial instruments that were recorded in accumulated other comprehensive income (loss) in the Consolidated Balance Sheet	$ 11,378	$ (36,560)