Components of Income Before Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income before income taxes	$ 206,138	$ 494,432	$ 412,622
U.S.
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income before income taxes	122,917	427,726	345,850
Foreign
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Income before income taxes	$ 83,221	$ 66,706	$ 66,772