Income Taxes (Details Textuals) (USD $)	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Income Taxes (Textuals) [Abstract]
Net undistributed earnings from foreign subsidiaries	$ 4,700,000,000
Tax liability for undistributed earnings	1,600,000,000
Net operating loss benefits related to stock based compensation deductions	110,000,000	93,000,000
Net Operating loss benefits relates to current year stock based compensation deductions result of future benefit	17,000,000
Tax holidays and incentives increase net earnings	362,000,000	560,000,000	241,000,000
Tax holidays and incentives increase net earnings, share	$ 1.54	$ 2.4	$ 1.07
Federal Net Operating Loss Carryforward	185,000,000
State net operating loss carryforwards	52,000,000
Federal and state tax credit carryforwards	251,000,000
Credit carryforwards available to offset future taxable income	140,000,000
Expiry date of tax holiday in Malaysia, Singapore and Thailand	Through 2023
Amount of benefit that may be recognized for uncertain tax positions	largest amount that has a greater than 50% likelihood of being realized upon ultimate settlement
Unrecognized tax benefits	245,000,000	230,000,000
NOL carryforward available to offset future federal taxable income, Expiration period	From 2021 to 2030
NOL carryforward available to offset future state taxable income, Expiration period	From 2015 to 2020
Western Digital Corporation [Member]
Income Tax Examination [Line Items]
Estimated impact of proposed IRS adjustments on pre-tax income	970,000,000
Komag [Member]
Income Tax Examination [Line Items]
Estimated impact of proposed IRS adjustments on pre-tax income	$ 380,000,000