Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 29, 2017

Dec. 30, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Selected Quarterly Financial Data

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Fiscal Period	2017		2017		2017		2017
(in millions, except per share data)
Revenue	$	613.9	$	661.9	$	670.0	$	708.4
Gross margin	326.6		346.5		349.5		370.0
Net income (loss) attributable to Trimble Inc.	50.5		49.9		55.7		(35.0		)
Basic net income (loss) per share	0.20		0.20		0.22		(0.14		)
Diluted net income (loss) per share	0.20		0.19		0.22		(0.14		)

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Fiscal Period	2016		2016		2016		2016
(in millions, except per share data)
Revenue	$	583.0	$	609.6	$	584.1	$	585.5
Gross margin	300.6		315.6		309.0		312.8
Net income attributable to Trimble Inc.	19.8		35.7		39.2		37.7
Basic net income per share	0.08		0.14		0.16		0.15
Diluted net income per share	0.08		0.14		0.15		0.15