Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Dec. 28, 2018
Revenue:
Total revenue	$ 3,147.7	$ 3,264.3	$ 3,108.4
Cost of sales:
Amortization of purchased intangible assets	92.3	94.1	103.2
Total cost of sales	1,392.8	1,483.4	1,427.4
Gross margin	1,754.9	1,780.9	1,681.0
Operating expense:
Research and development	475.9	469.7	446.1
Sales and marketing	467.0	504.2	479.8
General and administrative	300.9	330.6	349.8
Restructuring charges	25.8	26.8	8.2
Amortization of purchased intangible assets	65.5	73.7	76.4
Total operating expense	1,335.1	1,405.0	1,360.3
Operating income	419.8	375.9	320.7
Non-operating expense, net:
Interest expense, net	(77.6)	(82.4)	(73.2)
Income from equity method investments, net	39.4	35.8	28.7
Other income, net	13.4	15.5	1.8
Total non-operating expense, net	(24.8)	(31.1)	(42.7)
Income before taxes	395.0	344.8	278.0
Income tax provision (benefit)	4.4	(169.7)	(5.3)
Net income	390.6	514.5	283.3
Net gain attributable to noncontrolling interests	0.7	0.2	0.5
Net income attributable to Trimble Inc.	$ 389.9	$ 514.3	$ 282.8
Earnings per share attributable to Trimble Inc.:
Basic (in dollars per share)	$ 1.56	$ 2.05	$ 1.13
Diluted (in dollars per share)	$ 1.55	$ 2.03	$ 1.12
Shares used in calculating earnings per share:
Basic (in shares)	250.5	250.8	250.0
Diluted (in shares)	252.3	252.9	253.4
Product
Revenue:
Total revenue	$ 1,828.0	$ 1,934.8	$ 1,999.9
Cost of sales:
Total cost of sales	855.0	939.4	938.9
Service
Revenue:
Total revenue	644.8	686.2	588.7
Cost of sales:
Total cost of sales	234.5	253.9	247.3
Subscription
Revenue:
Total revenue	674.9	643.3	519.8
Cost of sales:
Total cost of sales	$ 211.0	$ 196.0	$ 138.0