Business Combination, Intangible Assets And Goodwill (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 3,876.5
Additions due to acquisition	175.5
Decrease from the sale of businesses	(18.0)
Foreign currency translation and other adjustments	(52.5)
Ending Balance	3,981.5
Buildings and Infrastructure
Goodwill [Roll Forward]
Beginning Balance	1,997.4
Additions due to acquisition	175.5
Decrease from the sale of businesses	(14.7)
Foreign currency translation and other adjustments	(16.8)
Ending Balance	2,141.4
Geospatial
Goodwill [Roll Forward]
Beginning Balance	415.7
Additions due to acquisition	0.0
Decrease from the sale of businesses	0.0
Foreign currency translation and other adjustments	(12.1)
Ending Balance	403.6
Resources and Utilities
Goodwill [Roll Forward]
Beginning Balance	453.8
Additions due to acquisition	0.0
Decrease from the sale of businesses	(3.3)
Foreign currency translation and other adjustments	(9.7)
Ending Balance	440.8
Transportation
Goodwill [Roll Forward]
Beginning Balance	1,009.6
Additions due to acquisition	0.0
Decrease from the sale of businesses	0.0
Foreign currency translation and other adjustments	(13.9)
Ending Balance	$ 995.7

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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