Planned Acquisition (Details Textual) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
Sep. 30, 2011	Mar. 07, 2011
Planned Acquisitions (Textual) [Abstract]
Expenses related to planned Acquisitions of HGST	$ 11,000,000
Hitachi Global Storage Technologies [Member]
Planned Acquisitions (Textual) [Abstract]
Purchase price of planned acquisition		4,200,000,000
Fees to be paid to other party if acquisition does not close by a specified date		250,000,000
Company newly issued common stock		25
Total Senior Revolving Facility, Related to Acquisition		500,000,000
Total Senior Credit Facility, Related to Acquisition		3,000,000,000
Committed Total Credit Facility, Related to Acquisition		2,500,000,000
Total Senior Term Loan Facility, Related to Acquisition		2,500,000,000
Committed Term loan Facility, Related to Acquisition		2,000,000,000
Committed Revolving Credit Facility, Related to Acquisition		500,000,000
Debt commitment fee per annum as percentage of unfunded amount committed to be borrowed under the senior facility		0.35%
Debt commitment fees	$ 3,000,000

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related costs which have been expensed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 57

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph n

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463

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- Definition

Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 8

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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Maximum borrowing capacity under the committed credit facility related to the acquisition without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Maximum borrowing capacity under the committed revolving credit facility related to the acquisition without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Maximum borrowing capacity under the committed term loan facility related to the acquisition without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility related to the acquisition without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Debt commitment fee per annum as percentage of unfunded amount committed to be borrowed under the senior facility.

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Fees to be paid to other party if acquisition does not close by a date specified in purchase agreement.

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Number of shares of common stock to be issued related to acquisition.

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Planned acquisitions.

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Maximum borrowing capacity under the revolving credit facility related to the acquisition without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Maximum borrowing capacity under the term loan facility related to the acquisition without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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