Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 03, 2020	Mar. 29, 2019
Revenue:
Revenue	$ 792.3	$ 801.6
Cost of sales:
Cost of Sales	351.3	363.3
Amortization of purchased intangible assets	23.5	24.2
Gross Profit	441.0	438.3
Operating expense:
Research and development	118.2	118.2
Sales and marketing	131.7	127.4
General and administrative	73.0	82.8
Restructuring charges	2.9	3.5
Amortization of purchased intangible assets	16.9	20.1
Total operating expense	342.7	352.0
Operating income	98.3	86.3
Non-operating expense, net:
Interest expense, net	(20.5)	(21.9)
Income from equity method investments, net	9.4	8.8
Other income (expense), net	(7.8)	2.0
Total non-operating expense, net	(18.9)	(11.1)
Income before taxes	79.4	75.2
Income tax provision	17.5	12.8
Net income	61.9	62.4
Net income attributable to noncontrolling interests	0.0	0.1
Net income attributable to Trimble Inc.	$ 61.9	$ 62.3
Basic earnings per share	$ 0.25	$ 0.25
Shares used in calculating basic earnings per share	249.9	251.5
Diluted earnings per share	$ 0.25	$ 0.25
Shares used in calculating diluted earnings per share	251.7	254.0
Product [Member]
Revenue:
Revenue	$ 463.8	$ 488.4
Cost of sales:
Cost of Sales	210.1	230.7
Service [Member]
Revenue:
Revenue	162.4	159.2
Cost of sales:
Cost of Sales	63.6	64.0
Subscription Arrangement [Member]
Revenue:
Revenue	166.1	154.0
Cost of sales:
Cost of Sales	$ 54.1	$ 44.4