Calculation and Allocation of Consideration (Detail) (Zarlink Semiconductor, Inc, USD $) In Thousands, unless otherwise specified	Jan. 01, 2012
Zarlink Semiconductor, Inc
Calculation of consideration:
Cash consideration for Zarlink Securities	$ 623,782
Book value of Zarlink's net assets	151,576
Inventories	7,230
Other intangible assets	210,100
Deferred tax liability, net	(35,963)
Adjustment to goodwill	$ 290,839

Amount of deferred tax assets or liabilities for the differences between the values assigned and the tax bases of assets and liabilities in a business combination, net of any valuation allowance for deferred tax assets.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 141

-Paragraph 38

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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