Goodwill And Intangible Assets (Changes In Carrying Amount Of Goodwill By Operating Segment) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2013
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	$ 1,815,699
Additions due to acquisitions	34,560
Purchase price adjustments	443
Foreign currency translation adjustments	(12,765)
Balance as of the first quarter of 2013	1,837,937
Engineering And Construction [Member]
Goodwill And Intangible Assets [Line Items]
Balance as of fiscal year end 2012	958,103
Additions due to acquisitions	1,790
Purchase price adjustments	79
Foreign currency translation adjustments	(10,085)
Balance as of the first quarter of 2013	949,887
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	(915)
Balance as of the first quarter of 2013	67,769
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	329
Foreign currency translation adjustments	(1,380)
Balance as of the first quarter of 2013	795,105
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	(385)
Balance as of the first quarter of 2013	$ 25,176