Business Combinations (Changes In Carrying Amount Of Goodwill By Operating Segment) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Oct. 03, 2014
Goodwill [Line Items]
Balance as of fiscal year end 2013	$ 1,989,470
Additions due to acquisitions	106,823
Purchase price adjustments	825
Foreign currency translation adjustments	(44,665)
Write off	(893)
Balance as of the third quarter of fiscal 2014	2,051,560
Engineering And Construction [Member]
Goodwill [Line Items]
Balance as of fiscal year end 2013	1,080,240
Additions due to acquisitions	102,356
Purchase price adjustments	845
Foreign currency translation adjustments	(38,960)
Write off	(72)
Balance as of the third quarter of fiscal 2014	1,144,409
Field Solutions [Member]
Goodwill [Line Items]
Balance as of fiscal year end 2013	88,651
Additions due to acquisitions	45
Purchase price adjustments	46
Foreign currency translation adjustments	(2,858)
Write off	0
Balance as of the third quarter of fiscal 2014	85,884
Mobile Solutions [Member]
Goodwill [Line Items]
Balance as of fiscal year end 2013	796,094
Additions due to acquisitions	4,422
Purchase price adjustments	(66)
Foreign currency translation adjustments	(2,093)
Write off	(821)
Balance as of the third quarter of fiscal 2014	797,536
Advanced Devices [Member]
Goodwill [Line Items]
Balance as of fiscal year end 2013	24,485
Additions due to acquisitions	0
Purchase price adjustments	0
Foreign currency translation adjustments	(754)
Write off	0
Balance as of the third quarter of fiscal 2014	$ 23,731