XML 37 R40.htm IDEA: XBRL DOCUMENT v2.4.1.9
Segment Information (Narrative) (Detail)
3 Months Ended
Apr. 03, 2015
Segment Reporting Information [Line Items]  
Number of Reportable Segments 4us-gaap_NumberOfReportableSegments
Sales Revenue, Net [Member] | Advanced Devices [Member]  
Segment Reporting Information [Line Items]  
Maximum percentage of operation accounts for Company's total revenue, operating income, and assets 10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_StatementBusinessSegmentsAxis
= trmb_AdvancedDevicesMember