Intangible Assets and Goodwill (Changes In Carrying Amount Of Goodwill By Operating Segment) (Detail) $ in Millions	6 Months Ended
	Jul. 02, 2021 USD ($)
Goodwill [Roll Forward]
Balance as of fiscal year end 2020	$ 3,876.5
Foreign currency translation and other adjustments	(29.7)
Balance as of the end of the second quarter of fiscal 2021	3,846.8
Buildings and Infrastructure
Goodwill [Roll Forward]
Balance as of fiscal year end 2020	1,997.4
Foreign currency translation and other adjustments	(13.8)
Balance as of the end of the second quarter of fiscal 2021	1,983.6
Geospatial
Goodwill [Roll Forward]
Balance as of fiscal year end 2020	415.7
Foreign currency translation and other adjustments	(4.2)
Balance as of the end of the second quarter of fiscal 2021	411.5
Resources and Utilities
Goodwill [Roll Forward]
Balance as of fiscal year end 2020	453.8
Foreign currency translation and other adjustments	(2.3)
Balance as of the end of the second quarter of fiscal 2021	451.5
Transportation
Goodwill [Roll Forward]
Balance as of fiscal year end 2020	1,009.6
Foreign currency translation and other adjustments	(9.4)
Balance as of the end of the second quarter of fiscal 2021	$ 1,000.2