Business Combinations (Schedule Of Net Tangible Assets Acquired) (Details) (USD $)				12 Months Ended			0 Months Ended			0 Months Ended		0 Months Ended		0 Months Ended		12 Months Ended			0 Months Ended			0 Months Ended		0 Months Ended		0 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010	Dec. 28, 2012 Developed Technology Rights [Member]	Dec. 28, 2012 Customer Relationships [Member]	Dec. 28, 2012 TMW Acquisition [Member]	Oct. 02, 2012 TMW Acquisition [Member] Developed Technology Rights [Member]	Dec. 28, 2012 TMW Acquisition [Member] Developed Technology Rights [Member]	Dec. 28, 2012 TMW Acquisition [Member] In Process Research And Development Member	Oct. 02, 2012 TMW Acquisition [Member] Order or Production Backlog [Member]	Dec. 28, 2012 TMW Acquisition [Member] Order or Production Backlog [Member]	Oct. 02, 2012 TMW Acquisition [Member] Customer Relationships [Member]	Dec. 28, 2012 TMW Acquisition [Member] Customer Relationships [Member]	Oct. 02, 2012 TMW Acquisition [Member] Trade Names [Member]	Dec. 28, 2012 TMW Acquisition [Member] Trade Names [Member]	Dec. 30, 2011 Tekla Acquisition [Member]		Jul. 08, 2011 Tekla Acquisition [Member]	Jul. 08, 2011 Tekla Acquisition [Member] Developed Technology Rights [Member]	Dec. 30, 2011 Tekla Acquisition [Member] Developed Technology Rights [Member]	Dec. 30, 2011 Tekla Acquisition [Member] In Process Research And Development Member	Jul. 08, 2011 Tekla Acquisition [Member] Order or Production Backlog [Member]	Dec. 30, 2011 Tekla Acquisition [Member] Order or Production Backlog [Member]	Jul. 08, 2011 Tekla Acquisition [Member] Customer Relationships [Member]	Dec. 30, 2011 Tekla Acquisition [Member] Customer Relationships [Member]	Jul. 08, 2011 Tekla Acquisition [Member] Trade Names [Member]	Dec. 30, 2011 Tekla Acquisition [Member] Trade Names [Member]	Dec. 28, 2012 Engineering And Construction [Member]	Dec. 30, 2011 Engineering And Construction [Member]	Dec. 31, 2010 Engineering And Construction [Member]	Dec. 30, 2011 Engineering And Construction [Member] Tekla Acquisition [Member]	Dec. 28, 2012 Field Solutions [Member]	Dec. 30, 2011 Field Solutions [Member]	Dec. 31, 2010 Field Solutions [Member]	Dec. 30, 2011 Field Solutions [Member] Tekla Acquisition [Member]	Dec. 28, 2012 Mobile Solutions [Member]	Dec. 30, 2011 Mobile Solutions [Member]	Dec. 31, 2010 Mobile Solutions [Member]	Dec. 30, 2011 Mobile Solutions [Member] TMW Acquisition [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Total purchase consideration						$ 332,944,000										$ 457,387,000	[1]
Intangible assets acquired						148,970,000		71,240,000	0		2,630,000		70,900,000		4,200,000	207,674,000				107,260,000	7,591,000		1,246,000		83,929,000		7,648,000
Deferred Tax Liabilities						(53,025,000)										(53,996,000)
Less fair value of all assets/liabilities acquired						99,337,000										166,957,000
Goodwill	1,815,699,000	1,297,692,000	828,737,000			233,607,000										290,430,000												958,103,000	697,237,000	432,364,000	245,600,000	68,684,000	68,268,000	26,211,000	44,800,000	763,386,000	508,260,000	348,166,000	233,600,000
Cash snd Cash Equivalents						1,478,000										12,871,000
Accounts Receivable						17,772,000										12,862,000
Other Receivables						651,000										1,712,000
Deferred Income Taxes						1,162,000										0
Other Current Assets						2,143,000										2,181,000
Property, Plant, and Equipment						1,773,000										4,066,000
Other Non Current Assets						278,000										5,113,000
Accounts Payable						(409,000)										(1,329,000)
Accrued Liabilities						(8,649,000)										(12,842,000)
Deferred Revenue Liability						(7,677,000)										(10,048,000)
Deferred Income Tax Liabilities						(4,841,000)										0
Other Non Current Liabilities						(289,000)										(1,307,000)
Net tangible assets acquired						3,392,000										13,279,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				6 years	8 years		6 years			1 year		8 years		5 years					7 years			6 months		8 years		8 years
Cash held in cash account for shares not yet acquired																2,500,000
Percentage of shares not yet acquired																0.54%
Business Acquisition, Percentage of Voting Interests Acquired																		99.46%
Revenue contribution of acquired company since acquisition						16,500,000										35,900,000
Operating income contribution of acquired company since acquisition						$ 1,700,000										$ 100,000

[1] Of the $457.4 million, $2.5 million was held in a cash account at the end of fiscal 2011 and represents the 0.54% of shares that were not yet acquired by the Company. In February, 2012 the Company purchased the remaining shares at the same per share price as was provided for the original 99.46% of shares obtained. Therefore, the non-controlling interest was valued based on that per-share price.