Hgst Acquisitions - Purchase Price Allocation (Detail) (Hitachi Global Storage Technologies [Member], USD $) In Millions, unless otherwise specified	Mar. 29, 2013	Mar. 08, 2012
Hitachi Global Storage Technologies [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		$ 194
Accounts receivable		1,290
Inventories		721
Other current assets		219
Property, plant and equipment		1,813
Other non-current assets		66
Accounts payable		(841)
Accrued liabilities		(594)
Debt assumed		(585)
Pension and other post-retirement benefit liabilities		(130)
Other liabilities		(102)
Intangible assets		833
Goodwill	1,800	1,803
Total		$ 4,687

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.

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The amount of acquisition cost of a business combination allocated to receivables.

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The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity.

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The amount of acquisition cost of a business combination allocated to accrued expenses of the acquired entity.

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The amount of acquisition cost of a business combination allocated to the current portion of long-term debt of the acquired entity.

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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

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-Name Statement of Financial Accounting Standard (FAS)

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Amount of acquisition cost of a business combination allocated to other noncurrent assets not separately disclosed.

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

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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

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Amount of acquisition cost of a business combination allocated to other noncurrent liabilities not separately disclosed.

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- Definition

The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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- Definition

Business acquisition purchase price allocation cash and short term investments.

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No definition available.

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Business acquisition purchase price allocation other current assets.

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Business Acquisition Purchase Price allocation Pension and other retirement benefit liabilities.

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No definition available.

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