Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Revenue:
Revenue	$ 854.8	$ 785.5	$ 1,656.4	$ 1,527.7
Cost of sales:
Cost of Sales	394.2	362.8	757.5	708.8
Amortization of purchased intangible assets	23.8	23.9	48.0	47.0
Gross Profit	460.6	422.7	898.9	818.9
Operating expense:
Research and development	119.6	110.1	237.8	219.4
Sales and marketing	128.8	112.8	256.2	234.9
General and administrative	79.9	89.4	162.7	171.0
Restructuring charges	2.9	2.2	6.4	3.8
Amortization of purchased intangible assets	19.7	18.7	39.8	36.1
Total operating expense	350.9	333.2	702.9	665.2
Operating income	109.7	89.5	196.0	153.7
Non-operating income (expense), net:
Interest expense, net	(20.6)	(18.6)	(42.5)	(28.1)
Foreign currency transaction gain (loss), net	(1.0)	(3.0)	(1.9)	0.7
Income from equity method investments, net	12.9	9.5	21.7	14.4
Other income, net	14.4	1.8	17.3	5.2
Total non-operating income (expense), net	5.7	(10.3)	(5.4)	(7.8)
Income before taxes	115.4	79.2	190.6	145.9
Income tax provision	20.8	15.1	33.6	23.1
Net income	94.6	64.1	157.0	122.8
Net gain attributable to noncontrolling interests	0.0	0.0	0.1	0.2
Net income attributable to Trimble Inc.	$ 94.6	$ 64.1	$ 156.9	$ 122.6
Basic earnings per share	$ 0.38	$ 0.26	$ 0.62	$ 0.49
Shares used in calculating basic earnings per share	251.7	249.5	251.6	249.1
Diluted earnings per share	$ 0.37	$ 0.25	$ 0.62	$ 0.49
Shares used in calculating diluted earnings per share	254.0	252.2	254.0	252.7
Product [Member]
Revenue:
Revenue	$ 521.1	$ 531.0	$ 1,009.5	$ 1,028.8
Cost of sales:
Cost of Sales	257.0	250.2	487.7	485.6
Service [Member]
Revenue:
Revenue	174.6	136.1	333.8	264.9
Cost of sales:
Cost of Sales	69.3	59.6	133.3	119.2
Subscription Arrangement [Member]
Revenue:
Revenue	159.1	118.4	313.1	234.0
Cost of sales:
Cost of Sales	$ 44.1	$ 29.1	$ 88.5	$ 57.0