Goodwill And Intangible Assets (Changes In Carrying Amount Of Goodwill By Operating Segment) (Details) (USD $)	9 Months Ended
Sep. 30, 2011	Jul. 08, 2011
Goodwill And Intangible Assets [Line Items]
Beginning Balance	$ 828,737,000
Purchase price adjustments	637,000
Foreign currency translation adjustments	(11,042,000)
Ending Balance	1,312,480,000
Goodwill allocated		291,701,000
Earn-out payments	300,000
Other purchase price allocation adjustments	300,000
Total purchase price adjustment	600,000
Engineering And Construction [Member] \| Tekla Acquisition [Member]
Goodwill And Intangible Assets [Line Items]
Additions due to acquisitions	246,640,000
Field Solutions [Member] \| Tekla Acquisition [Member]
Goodwill And Intangible Assets [Line Items]
Additions due to acquisitions	45,061,000
Tekla Acquisition [Member]
Goodwill And Intangible Assets [Line Items]
Additions due to acquisitions	291,701,000
Engineering And Construction [Member] \| Other Acquisition [Member]
Goodwill And Intangible Assets [Line Items]
Additions due to acquisitions	37,977,000
Other Acquisition [Member]
Goodwill And Intangible Assets [Line Items]
Additions due to acquisitions	202,447,000
Other Acquisition [Member] \| Mobile Solutions [Member]
Goodwill And Intangible Assets [Line Items]
Additions due to acquisitions	162,307,000
Other Acquisition [Member] \| Advanced Devices [Member]
Goodwill And Intangible Assets [Line Items]
Additions due to acquisitions	2,163,000
Engineering And Construction [Member]
Goodwill And Intangible Assets [Line Items]
Beginning Balance	432,364,000
Purchase price adjustments	242,000
Foreign currency translation adjustments	(8,584,000)
Ending Balance	708,639,000
Goodwill allocated		246,600,000
Field Solutions [Member]
Goodwill And Intangible Assets [Line Items]
Beginning Balance	26,211,000
Foreign currency translation adjustments	(1,649,000)
Ending Balance	69,623,000
Goodwill allocated		45,100,000
Mobile Solutions [Member]
Goodwill And Intangible Assets [Line Items]
Beginning Balance	348,166,000
Purchase price adjustments	395,000
Foreign currency translation adjustments	(486,000)
Ending Balance	510,382,000
Advanced Devices [Member]
Goodwill And Intangible Assets [Line Items]
Beginning Balance	21,996,000
Foreign currency translation adjustments	(323,000)
Ending Balance	$ 23,836,000

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 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 3: 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 4: 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 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 Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

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-Name Accounting Standards Codification

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-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.

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