Document And Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 29, 2017
Feb. 22, 2018
Jun. 30, 2017
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 29, 2017    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017    
Entity Registrant Name TRIMBLE INC.    
Entity Central Index Key 0000864749    
Current Fiscal Year End Date --12-29    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   248,266,451  
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 9
Entity Current Reporting Status Yes    
Entity Voluntary Filers No