Intangible Assets and Goodwill (Changes In Carrying Amount Of Goodwill By Operating Segment) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 4,137.9
Additions due to acquisitions	1,389.5
Foreign currency translation and other adjustments	32.5
Goodwill, ending balance	5,559.9
Buildings and Infrastructure
Goodwill [Roll Forward]
Goodwill, beginning balance	2,300.1
Additions due to acquisitions	22.5
Foreign currency translation and other adjustments	12.3
Goodwill, ending balance	2,334.9
Geospatial
Goodwill [Roll Forward]
Goodwill, beginning balance	382.1
Additions due to acquisitions	0.0
Foreign currency translation and other adjustments	1.6
Goodwill, ending balance	383.7
Resources and Utilities
Goodwill [Roll Forward]
Goodwill, beginning balance	471.8
Additions due to acquisitions	0.0
Foreign currency translation and other adjustments	8.5
Goodwill, ending balance	480.3
Transportation
Goodwill [Roll Forward]
Goodwill, beginning balance	983.9
Additions due to acquisitions	1,367.0
Foreign currency translation and other adjustments	10.1
Goodwill, ending balance	$ 2,361.0