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Business Combinations (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) $ in Millions | 12 Months Ended
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Dec. 28, 2018 USD ($)
Goodwill [Line Items] |  |
Beginning Balance | $ 2,287.1 | [1]
Additions due to acquisitions and current year acquisitions' purchase price adjustments | 1,298.8 |
Purchase price adjustments - prior years' acquisitions | (1.2) |
Foreign currency translation adjustments | (42.9) |
Divestitures | (1.8) | [2]
Ending Balance | 3,540.0 |
Building and Infrastructure [Member] |  |
Goodwill [Line Items] |  |
Beginning Balance | 706.8 |
Additions due to acquisitions and current year acquisitions' purchase price adjustments | 1,283.4 |
Purchase price adjustments - prior years' acquisitions | 0.0 |
Foreign currency translation adjustments | (20.0) |
Divestitures | 0.0 | [2]
Ending Balance | 1,970.2 |
Geospatial [Member] |  |
Goodwill [Line Items] |  |
Beginning Balance | 415.3 |
Additions due to acquisitions and current year acquisitions' purchase price adjustments | 0.0 |
Purchase price adjustments - prior years' acquisitions | 0.0 |
Foreign currency translation adjustments | (10.4) |
Divestitures | (1.8) |
Ending Balance | 403.1 |
Resources and Utilities [Member] |  |
Goodwill [Line Items] |  |
Beginning Balance | 314.5 |
Additions due to acquisitions and current year acquisitions' purchase price adjustments | 0.0 |
Purchase price adjustments - prior years' acquisitions | (0.4) |
Foreign currency translation adjustments | (8.4) |
Divestitures | 0.0 | [2]
Ending Balance | 305.7 |
Transportation [Member] |  |
Goodwill [Line Items] |  |
Beginning Balance | 850.5 |
Additions due to acquisitions and current year acquisitions' purchase price adjustments | 15.4 |
Purchase price adjustments - prior years' acquisitions | (0.8) |
Foreign currency translation adjustments | (4.1) |
Divestitures | 0.0 | [2]
Ending Balance | $ 861.0 |
[1] | See Note 2 for a summary of adjustments
[2] | {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmY0MTAzMTMxODNkYzRiZTc5MjlkNmQxOThhNjQxMGM2fFRleHRTZWxlY3Rpb246MTM2MDQzQjA5M0JGRDZGNDZBQzc5MzlFRDgwMTg3MkQM}

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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