Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 114.6	$ 61.9
Foreign currency translation adjustments, net of tax	(31.5)	(54.3)
Net unrealized gain, net of tax	0.0	0.2
Comprehensive income	83.1	7.8
Comprehensive income attributable to noncontrolling interests	0.1	0.0
Comprehensive income attributable to Trimble Inc.	$ 83.0	$ 7.8