Income Taxes - Schedule of Deferred Taxes (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Federal and state tax credits	$ 51,377	$ 90,176
Deferred interest and loss carryforwards	148,258	74,845
Inventory costing differences	15,784	13,935
Capitalized research and development	75,416	91,644
Amortization of share-based compensation	15,485	13,525
Pension liability and other	51,324	46,934
Financial instruments	0	4,688
Reserves and other	81,375	54,507
Deferred tax assets, gross	439,019	390,254
Less valuation allowance	(138,173)	(65,462)
Deferred tax assets, net of valuation allowance	300,846	324,792
Fixed assets	(270)	(2,140)
Intangible assets	(192,296)	(51,922)
Derivatives	(53,874)	0
Deferred tax liability, gross	(246,440)	(54,062)
Net deferred tax asset	$ 54,406	$ 270,730