Business Combinations (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 28, 2012	Dec. 31, 2010
Goodwill [Line Items]
Beginning Balance	$ 1,297,692	$ 828,737
Foreign currency translation adjustments	10,444
Ending Balance	1,815,699	828,737
Engineering And Construction [Member]
Goodwill [Line Items]
Beginning Balance	697,237	432,364
Foreign currency translation adjustments	8,246
Ending Balance	958,103	432,364
Field Solutions [Member]
Goodwill [Line Items]
Beginning Balance	68,268	26,211
Foreign currency translation adjustments	416
Ending Balance	68,684	26,211
Mobile Solutions [Member]
Goodwill [Line Items]
Beginning Balance	508,260	348,166
Foreign currency translation adjustments	1,348
Ending Balance	763,386	348,166
Advanced Devices [Member]
Goodwill [Line Items]
Beginning Balance	23,927	21,996
Foreign currency translation adjustments	434
Ending Balance	25,526	21,996
TMW Acquisition [Member]
Goodwill [Line Items]
Additions due to acquisitions	233,607
Ending Balance	233,607
TMW Acquisition [Member] \| Engineering And Construction [Member]
Goodwill [Line Items]
Additions due to acquisitions	0
TMW Acquisition [Member] \| Field Solutions [Member]
Goodwill [Line Items]
Additions due to acquisitions	0
TMW Acquisition [Member] \| Mobile Solutions [Member]
Goodwill [Line Items]
Beginning Balance	233,600
Additions due to acquisitions	233,607
Other Acquisition [Member]
Goodwill [Line Items]
Additions due to acquisitions	273,516
Purchase price adjustments	440
Other Acquisition [Member] \| Engineering And Construction [Member]
Goodwill [Line Items]
Additions due to acquisitions	251,890
Purchase price adjustments	730
Other Acquisition [Member] \| Mobile Solutions [Member]
Goodwill [Line Items]
Additions due to acquisitions	20,548
Purchase price adjustments	(377)
Other Acquisition [Member] \| Advanced Devices [Member]
Goodwill [Line Items]
Additions due to acquisitions	1,078
Purchase price adjustments	$ 87

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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-Clause 1

-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 Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph l

-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 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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 43

-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)

-Number 142

-Paragraph 45

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 72

-Subparagraph d

-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