The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 44
-Subparagraph a(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275

Acquisitions (Details Textuals) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended			12 Months Ended				3 Months Ended		12 Months Ended
	Jul. 01, 2011	Jul. 01, 2011 Magnetic Media Operations [Member]	Jun. 30, 2010 Magnetic Media Operations [Member]	Jul. 01, 2011 Silicon Systems [Member]	Mar. 27, 2009 Silicon Systems [Member]	Jul. 01, 2011 Semiconductor Wafer Fabrication Facility [Member]	May 25, 2010 Semiconductor Wafer Fabrication Facility [Member]	Jul. 01, 2011 Hitachi Global Storage Technologies [Member]	Apr. 01, 2011 Hitachi Global Storage Technologies [Member]	Jul. 01, 2011 Hitachi Global Storage Technologies [Member]	Mar. 07, 2011 Hitachi Global Storage Technologies [Member]
Acquisitions (Textuals) [Abstract]
Purchase price of planned acquisition							$ 35,000,000				$ 4,300,000,000
Company newly issued common stock											25
Fees to be paid to other party if acquisition does not close by a specified date											250,000,000
Expenses related to planned Acquisitions of HGST	17,000,000
Total Senior Credit Facility, Related to Acquisition											3,000,000,000
Total Senior Revolving Facility, Related to Acquisition											500,000,000
Total Senior Term Loan Facility, Related to Acquisition											2,500,000,000
Committed Total Credit Facility, Related to Acquisition											2,500,000,000
Committed Revolving Credit Facility, Related to Acquisition											500,000,000
Committed Term loan Facility, Related to Acquisition											2,000,000,000
Debt commitment fee per annum as percentage of unfunded amount committed to be borrowed under the senior facility											35.00%
Debt commitment fee										2,000,000
Total acquisition cost			233,000,000		66,000,000
Intangible assets			11,000,000		24,000,000
Amortized to cost of revenue over the weighted average useful life		3		6
Other direct acquisition costs					1,000,000
Cash paid to shareholders					65,000,000
Land and building							20,000,000
Equipment						15,000,000
In-process research and development					14,000,000
Business Combination, Acquisition Related Costs								$ 7,000,000	$ 10,000,000