Business Combinations (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) $ in Millions	12 Months Ended
Jan. 03, 2020 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 3,540.0
Additions due to acquisitions	139.1
Purchase price and foreign currency translation adjustments	1.5
Ending Balance	3,680.6
Building and Infrastructure [Member]
Goodwill [Line Items]
Beginning Balance	1,970.2
Additions due to acquisitions	0.3
Purchase price and foreign currency translation adjustments	2.5
Ending Balance	1,973.0
Geospatial [Member]
Goodwill [Line Items]
Beginning Balance	403.1
Additions due to acquisitions	0.0
Purchase price and foreign currency translation adjustments	(1.6)
Ending Balance	401.5
Resources and Utilities [Member]
Goodwill [Line Items]
Beginning Balance	305.7
Additions due to acquisitions	138.8
Purchase price and foreign currency translation adjustments	0.9
Ending Balance	445.4
Transportation [Member]
Goodwill [Line Items]
Beginning Balance	861.0
Additions due to acquisitions	0.0
Purchase price and foreign currency translation adjustments	(0.3)
Ending Balance	$ 860.7

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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