Goodwill And Intangible Assets (Changes In Carrying Amount Of Goodwill By Operating Segment) (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 28, 2013
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	$ 1,815,699
Additions due to acquisitions	109,664
Purchase price adjustments	(459)
Foreign currency translation adjustments	(13,326)
Balance as of the second quarter of 2013	1,911,578
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	324
Foreign currency translation adjustments	(9,586)
Balance as of the second quarter of 2013	1,025,735
Field Solutions [Member]
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	68,684
Additions due to acquisitions	0
Purchase price adjustments	0
Foreign currency translation adjustments	(390)
Balance as of the second quarter of 2013	68,294
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	(818)
Foreign currency translation adjustments	(2,473)
Balance as of the second quarter of 2013	792,865
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	(877)
Balance as of the second quarter of 2013	$ 24,684

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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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

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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

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-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