Income Taxes - Schedule of Deferred Taxes (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Federal and state tax credits	$ 112,937	$ 163,029
Deferred interest and loss carryforwards	77,522	58,507
Inventory costing differences	10,076	9,945
Capitalized research and development	106,935	107,204
Fixed assets	9,261	6,270
Amortization of share-based compensation	15,440	21,459
Pension liability and other	42,795	43,943
Reserves and other	35,814	25,048
Deferred tax assets, gross	410,780	435,405
Less valuation allowance	(63,947)	(60,554)
Deferred tax assets, net of valuation allowance	346,833	374,851
Intangible assets	(6,843)	(181)
Financial instruments	(2,965)	(13,117)
Deferred tax liability, gross	(9,808)	(13,298)
Net deferred tax asset	$ 337,025	$ 361,553