Earnings Per Share (Schedule Of Computation Of Earnings Per Share And Effect On Weighted-Average Number Of Shares) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021
Numerator:
Net income attributable to Trimble Inc.	$ 311.3	$ 449.7	$ 492.7
Denominator:
Weighted-average number of common shares used in basic earnings per share (in shares)	247.9	248.6	251.4
Effect of dilutive securities (in shares)	1.2	1.6	2.9
Weighted-average number of common shares and dilutive potential common shares used in diluted earnings per share (in shares)	249.1	250.2	254.3
Basic earnings per share (in usd per share)	$ 1.26	$ 1.81	$ 1.96
Diluted earnings per share (in usd per share)	$ 1.25	$ 1.80	$ 1.94
Antidilutive weighted-average shares (in shares)	1.9	1.3	0.1