Income Taxes (Narrative) (Detail) (USD $)	12 Months Ended						12 Months Ended		12 Months Ended							12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Mar. 31, 2012 Subsequent Event [Member]	Jun. 30, 2012 Foreign Tax Authority [Member]	Jun. 30, 2011 Foreign Tax Authority [Member]	Jun. 30, 2012 State [Member]	Jun. 30, 2011 State [Member]	Jun. 30, 2012 No Expiration [Member]	Jun. 30, 2012 Expiration Period Between 2014 Through 2031 [Member]	Jun. 30, 2012 U S Federal Tax Credits [Member]	Jun. 30, 2012 Other Non-Current Liabilities [Member]	Jun. 30, 2011 Other Non-Current Liabilities [Member]	Jun. 30, 2012 Income Taxes Payable [Member]	Jun. 30, 2012 Deferred Tax Assets, Noncurrent [Member]	Jun. 30, 2012 Federal, State And Foreign [Member]	Jun. 30, 2011 Federal, State And Foreign [Member]	Jun. 30, 2010 Federal, State And Foreign [Member]	Jun. 30, 2012 Other Current Asset [Member]	Jun. 30, 2011 Other Current Asset [Member]	Jun. 30, 2012 Other Current Liabilities [Member]	Jun. 30, 2011 Other Current Liabilities [Member]
Schedule Of Income Taxes [Line Items]
Cash paid for Federal, state and foreign income tax	$ 30,918,000	$ 33,230,000	$ 5,134,000													$ 24,300,000	$ 9,600,000	$ 2,300,000
Net current deferred tax assets																			56,000,000	52,400,000
Net current deferred tax liabilities																					2,800,000	0
Unrecognized tax benefits												400,000	400,000
Decrease in valuation allowance	126,300,000
valuation allowance for tax credit					8,600,000	125,700,000	22,000,000	31,400,000
Valuation allowance before foreign net operating loss carry forward	2,500,000	2,300,000
Deferred tax assets	421,032,000	495,435,000
Valuation allowance against deferred tax assets	33,076,000	159,378,000		124,200,000
U.S. foreign tax credits	122,200,000
Foreign tax credit expiration period	2015 through 2020						2013			2024 through 2031
U.S. Federal and state research and experimentation credits	37,700,000						700,000		15,300,000	22,300,000	7,000,000
State research and experimentation credits, expiration period											2019 through 2027
Foreign net operating loss carry forward	7,800,000						2,800,000		13,900,000
Operating loss carry forward expiration period							2014 through 2030
Unremitted earning in foreign investment	629,000,000
Earnings on which deferred tax not provided	400,000
Unrecognized tax benefit if recognized that would reduce effective tax rate	1,700,000
Decrease in unrecognized tax benefits	4,700,000
Unrecognized tax benefits	34,200,000	32,266,000	20,560,000									17,700,000		4,700,000	11,800,000
Interest and penalties accrued for unrecognized tax benefits	$ 1,100,000