Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 138.9	$ 63.2	$ 253.5	$ 125.1
Foreign currency translation adjustments, net of tax	18.1	32.6	(13.4)	(21.7)
Net unrealized gain, net of tax	0.0	0.0	0.0	0.2
Comprehensive income	157.0	95.8	240.1	103.6
Comprehensive income attributable to noncontrolling interests	0.0	0.2	0.1	0.2
Comprehensive income attributable to Trimble Inc.	$ 157.0	$ 95.6	$ 240.0	$ 103.4