Earnings Per Share (Tables)

12 Months Ended

Dec. 28, 2012

Earnings Per Share [Abstract]

Schedule Of Computation Of Earnings Per Share And Effect On Weighted-Average Number Of Shares

Fiscal Years	2012		2011		2010
(in thousands, except per share data)
Numerator:
Net income attributable to Trimble Navigation Ltd.	$	191,060	$	150,755	$	103,660
Denominator:
Weighted average number of common shares used in basic earnings per share	125,566		122,725		120,352
Effect of dilutive securities (using treasury stock method):
Common stock options and restricted stock units	2,821		3,408		3,446
Weighted average number of common shares and dilutive potential common shares used in diluted earnings per share	128,387		126,133		123,798
Basic earnings per share	$	1.52	$	1.23	$	0.86
Diluted earnings per share	$	1.49	$	1.20	$	0.84