Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 28, 2018	Feb. 19, 2019	Jun. 29, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 28, 2018
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2018
Entity Registrant Name	TRIMBLE INC.
Entity Central Index Key	0000864749
Current Fiscal Year End Date	--12-28
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		251,514,221
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 8.2
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false