Business Combinations (Changes In Carrying Amount Of Goodwill By Operating Segment) (Detail) $ in Millions	9 Months Ended
	Oct. 02, 2015 USD ($)
Goodwill [Line Items]
Balance as of fiscal year 2014	$ 2,085.8
Additions due to acquisitions	61.7
Purchase price adjustments	1.1
Foreign currency translation adjustments	(50.6)
Divestiture	(14.3)
Balance as of the end of the third quarter of fiscal 2015	2,083.7
Engineering And Construction [Member]
Goodwill [Line Items]
Balance as of fiscal year 2014	1,170.6
Additions due to acquisitions	33.6
Purchase price adjustments	(0.6)
Foreign currency translation adjustments	(41.4)
Divestiture	(14.3)
Balance as of the end of the third quarter of fiscal 2015	1,147.9
Field Solutions [Member]
Goodwill [Line Items]
Balance as of fiscal year 2014	96.0
Additions due to acquisitions	11.1
Purchase price adjustments	1.7
Foreign currency translation adjustments	(2.4)
Divestiture	0.0
Balance as of the end of the third quarter of fiscal 2015	106.4
Mobile Solutions [Member]
Goodwill [Line Items]
Balance as of fiscal year 2014	796.0
Additions due to acquisitions	17.0
Purchase price adjustments	0.0
Foreign currency translation adjustments	(5.0)
Divestiture	0.0
Balance as of the end of the third quarter of fiscal 2015	808.0
Advanced Devices [Member]
Goodwill [Line Items]
Balance as of fiscal year 2014	23.2
Additions due to acquisitions	0.0
Purchase price adjustments	0.0
Foreign currency translation adjustments	(1.8)
Divestiture	0.0
Balance as of the end of the third quarter of fiscal 2015	$ 21.4