Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 29, 2019	Mar. 30, 2018
Revenue:
Revenue	$ 801.6	$ 742.2
Cost of sales:
Amortization of purchased intangible assets	24.2	23.1
Cost of Sales	363.3	346.0
Gross Profit	438.3	396.2
Operating expense:
Research and development	118.2	109.3
Sales and marketing	127.4	122.1
General and administrative	82.8	81.6
Restructuring charges	3.5	1.6
Amortization of purchased intangible assets	20.1	17.4
Total operating expense	352.0	332.0
Operating income	86.3	64.2
Non-operating income (expense), net:
Interest expense, net	(21.9)	(9.5)
Foreign currency transaction gain (loss), net	(0.9)	3.7
Income from equity method investments, net	8.8	4.9
Other income, net	2.9	3.4
Total non-operating income (expense), net	(11.1)	2.5
Income before taxes	75.2	66.7
Income tax provision	12.8	8.0
Net income	62.4	58.7
Net gain attributable to noncontrolling interests	0.1	0.2
Net income attributable to Trimble Inc.	$ 62.3	$ 58.5
Basic earnings per share	$ 0.25	$ 0.24
Shares used in calculating basic earnings per share	251.5	248.8
Diluted earnings per share	$ 0.25	$ 0.23
Shares used in calculating diluted earnings per share	254.0	253.2
Product [Member]
Revenue:
Revenue	$ 488.4	$ 497.8
Cost of sales:
Cost of Sales	230.7	235.4
Service [Member]
Revenue:
Revenue	159.2	128.8
Cost of sales:
Cost of Sales	64.0	59.6
Subscription Arrangement [Member]
Revenue:
Revenue	154.0	115.6
Cost of sales:
Cost of Sales	$ 44.4	$ 27.9