Acquisitions - Assets Acquired and Liabilities Assumed (Details) (USD $) In Millions, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012	Jul. 02, 2012 Composite Engineering, Inc.	Dec. 30, 2011 Critical Infrastructure Business	Nov. 15, 2011 SecureInfo Corporation	Jul. 27, 2011 Integral Systems, Inc.	Mar. 25, 2011 Herley Industries, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Cash			$ 8.9		$ 1.4	$ 6.8	$ 21.8
Accounts receivable			9.3	23.4		68.4	39.1
Inventoried costs			12.3			15.8	42.8
Deferred tax assets						36.4	17.3
Other current assets			8.9
Other assets				0.5	3.0	3.5	7.2
Property and equipment			8.1		0.1	12.9	34.2
Intangible assets			38.0	2.0	4.5	32.0	37.0
Goodwill	596.4	596.4	104.2	2.6	12.2	187.8	146.4
Total assets			189.7	28.5	21.2	363.6	345.8
Current liabilities			(25.7)	(9.7)	(0.9)	(84.5)	(40.8)
Deferred tax liabilities						(19.5)	(16.8)
Debt							(9.5)
Long-term liabilities						(18.5)	(6.2)
Net assets acquired			$ 164.0	$ 18.8	$ 20.3	$ 241.1	$ 272.5

Business Acquisition Purchase Price Allocation Deferred Tax Liabilities

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- Definition

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Including Goodwill

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No definition available.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of long-term debt due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards that are expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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- Definition

The amount of inventory recognized as of the acquisition date.

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

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Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

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- Definition

Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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