Document and Entity Information - shares	9 Months Ended
	Sep. 27, 2019	Nov. 01, 2019
Document and Entity Information
Document Transition Report	false
Document Quarterly Report	true
Document Type	10-Q
Document Period End Date	Sep. 27, 2019
Entity File Number	001-14845
Entity Registrant Name	TRIMBLE INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-2802192
Entity Central Index Key	0000864749
Current Fiscal Year End Date	--01-03
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Address, Address Line One	935 Stewart Drive
Entity Address, City or Town	Sunnyvale
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94085
City Area Code	408
Local Phone Number	481-8000
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	TRMB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		249,133,702