Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Oct. 02, 2020	Sep. 27, 2019
Revenue:
Revenue	$ 792.1	$ 783.9	$ 2,318.0	$ 2,440.3
Cost of sales:
Cost of Sales	352.4	361.9	1,031.6	1,119.4
Amortization of purchased intangible assets	23.3	23.3	70.0	71.3
Gross margin	439.7	422.0	1,286.4	1,320.9
Operating expense:
Research and development	117.9	112.3	350.1	350.1
Sales and marketing	111.6	119.7	346.9	375.9
General and administrative	79.4	77.2	221.2	239.9
Restructuring charges	12.1	3.6	20.1	10.0
Amortization of purchased intangible assets	16.7	17.5	50.2	57.3
Total operating expense	337.7	330.3	988.5	1,033.2
Operating income	102.0	91.7	297.9	287.7
Non-operating expense, net:
Interest expense, net	(19.6)	(19.7)	(59.7)	(62.2)
Income from equity method investments, net	10.8	8.8	29.9	30.5
Other income (expense), net	3.2	(1.9)	(1.4)	13.5
Total non-operating expense, net	(5.6)	(12.8)	(31.2)	(18.2)
Income before taxes	96.4	78.9	266.7	269.5
Income tax provision	11.6	0.8	56.8	34.4
Net income	84.8	78.1	209.9	235.1
Net income attributable to noncontrolling interests	0.1	$ 0.0	0.3	0.1
Net income attributable to Trimble Inc.	$ 84.7		$ 209.6	$ 235.0
Earnings per share attributable to Trimble Inc.:
Basic (in dollars per share)	$ 0.34	$ 0.31	$ 0.84	$ 0.94
Diluted (in dollars per share)	$ 0.34	$ 0.31	$ 0.83	$ 0.93
Shares used in calculating earnings per share:
Basic (in shares)	250.7	250.4	250.4	251.2
Diluted (in shares)	252.8	252.1	251.9	253.4
Retained Earnings
Non-operating expense, net:
Net income	$ 84.7	$ 78.1
Product
Revenue:
Revenue	461.4	458.8	$ 1,337.6	$ 1,468.3
Cost of sales:
Cost of Sales	221.2	230.8	630.7	718.5
Service
Revenue:
Revenue	160.7	168.0	479.7	501.8
Cost of sales:
Cost of Sales	55.5	58.9	175.1	192.2
Subscription
Revenue:
Revenue	170.0	157.1	500.7	470.2
Cost of sales:
Cost of Sales	$ 52.4	$ 48.9	$ 155.8	$ 137.4