Reporting Segment And Geographic Information (Schedule Of Revenue, Operating Income And Identifiable Assets By Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Revenue	$ 2,040,113	$ 1,644,065	$ 1,293,937
Operating income	440,933	327,506	247,536
Accounts receivable	323,477	275,201	222,820
Inventories	240,529	232,063	192,852
Goodwill	1,815,699	1,297,692	828,737
Engineering And Construction [Member]
Segment Reporting Information [Line Items]
Revenue	1,089,424	906,497	719,053
Operating income	207,174	149,015	110,965
Accounts receivable	171,580	160,218	131,808
Inventories	148,241	128,433	123,780
Goodwill	958,103	697,237	432,364
Field Solutions [Member]
Segment Reporting Information [Line Items]
Revenue	481,962	413,721	318,137
Operating income	182,134	160,139	116,373
Accounts receivable	71,465	63,542	52,065
Inventories	44,738	51,756	33,964
Goodwill	68,684	68,268	26,211
Mobile Solutions [Member]
Segment Reporting Information [Line Items]
Revenue	348,147	218,540	154,254
Operating income	32,459	4,461	1,873
Accounts receivable	59,720	36,465	24,806
Inventories	30,598	31,262	16,721
Goodwill	763,386	508,260	348,166
Advanced Devices [Member]
Segment Reporting Information [Line Items]
Revenue	120,580	105,307	102,493
Operating income	19,166	13,891	18,325
Accounts receivable	20,712	14,976	14,141
Inventories	16,952	20,612	18,387
Goodwill	$ 25,526	$ 23,927	$ 21,996
Maximum percentage of operation accounts for company's total revenue, operating income, and assets	10.00%

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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