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Segment Information (Segment Select Balance Sheet) (Detail) - USD ($) $ in Millions | Sep. 27, 2019 | Dec. 28, 2018
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Accounts receivable, net | $ 488.9 | $ 512.6
Inventory, Net | 290.1 | 298.0
Goodwill | 3,534.4 | 3,540.0
Buildings and Infrastructure [Member] |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable, net | 175.3 | 177.5
Inventory, Net | 61.3 | 70.3
Goodwill | 1,957.3 | 1,970.2
Geospatial [Member] |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable, net | 109.1 | 118.7
Inventory, Net | 123.0 | 133.5
Goodwill | 397.4 | 403.1
Resources and Utilities [Member] |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable, net | 73.7 | 83.8
Inventory, Net | 44.9 | 46.2
Goodwill | 321.9 | 305.7
Transportation [Member] |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable, net | 130.8 | 132.6
Inventory, Net | 60.9 | 48.0
Goodwill | $ 857.8 | $ 861.0

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