Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2020	Jun. 28, 2019	Jul. 03, 2020	Jun. 28, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 63.2	$ 94.6	$ 125.1	$ 157.0
Foreign currency translation adjustments, net of tax	32.6	2.1	(21.7)	5.6
Net unrealized income, net of tax	0.0	0.0	0.2	0.1
Comprehensive income	95.8	96.7	103.6	162.7
Comprehensive income attributable to noncontrolling interests	0.2	0.0	0.2	0.1
Comprehensive income attributable to Trimble Inc.	$ 95.6	$ 96.7	$ 103.4	$ 162.6