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Segment Information (Segment Select Balance Sheet) (Detail) - USD ($) $ in Millions | Sep. 28, 2018 | Dec. 29, 2017
--- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Accounts receivable, net | $ 476.0 | $ 427.7 | [1]
Inventory, Net | 286.3 | 264.6 | [1],[2]
Goodwill | 3,548.6 | 2,287.1 | [1]
Buildings and Infrastructure [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Accounts receivable, net | 165.1 | 120.1 |
Inventory, Net | 66.5 | 62.1 |
Goodwill | 1,983.1 | 706.8 |
Geospatial [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Accounts receivable, net | 125.8 | 121.5 |
Inventory, Net | 131.4 | 110.3 |
Goodwill | 408.1 | 415.3 |
Resources and Utilities [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Accounts receivable, net | 71.0 | 78.5 |
Inventory, Net | 45.5 | 46.0 |
Goodwill | 310.0 | 314.5 |
Transportation [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Accounts receivable, net | 114.1 | 107.6 |
Inventory, Net | 42.9 | 46.2 |
Goodwill | $ 847.4 | $ 850.5 |
[1] | See Note 2 for a summary of adjustments
[2] | See Note 2 for a summary of adjustments

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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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