Goodwill And Intangible Assets (Changes In Carrying Amount Of Goodwill By Operating Segment) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 27, 2013
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	$ 1,815,699
Additions due to acquisitions	118,979
Purchase price adjustments	(521)
Foreign currency translation adjustments	4,713
Balance as of the third quarter of 2013	1,938,870
Engineering And Construction [Member]
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	958,103
Additions due to acquisitions	76,894
Purchase price adjustments	(173)
Foreign currency translation adjustments	6,082
Balance as of the third quarter of 2013	1,040,906
Field Solutions [Member]
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	68,684
Additions due to acquisitions	9,315
Purchase price adjustments	0
Foreign currency translation adjustments	716
Balance as of the third quarter of 2013	78,715
Mobile Solutions [Member]
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	763,386
Additions due to acquisitions	32,770
Purchase price adjustments	(383)
Foreign currency translation adjustments	(1,470)
Balance as of the third quarter of 2013	794,303
Advanced Devices [Member]
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	25,526
Additions due to acquisitions	0
Purchase price adjustments	35
Foreign currency translation adjustments	(615)
Balance as of the third quarter of 2013	$ 24,946

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 72

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 34

-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.

+ Details

- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details