XML 32 R18.htm IDEA: XBRL DOCUMENT v3.10.0.1
Net Income Per Share
 12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Net Income Per Share
NET INCOME PER SHARE
The following table presents the computation of basic and diluted net income per share attributable to Intuitive Surgical, Inc. (in millions, except per share amounts):
 
Years Ended December 31,
 
2018
 
2017
 
2016
Numerator:
 
 
 
 
 
Net income attributable to Intuitive Surgical, Inc.
$
1,127.9

 
$
670.9

 
$
738.3

Denominator:
 
 
 
 
 
Weighted average shares outstanding used in basic calculation
113.7

 
111.7

 
114.9

Add: dilutive effect of potential common shares
5.1

 
4.6

 
3.0

Weighted average shares outstanding used in diluted calculation
118.8

 
116.3

 
117.9

Net income per share attributable to Intuitive Surgical, Inc.:
 
 
 
 
 
Basic
$
9.92

 
$
6.01

 
$
6.43

Diluted
$
9.49

 
$
5.77

 
$
6.26


Share-based compensation awards of approximately 0.4 million, 0.2 million, and 0.6 million shares for the years ended December 31, 2018, 2017, and 2016, respectively, were outstanding, but were not included in the computation of diluted net income per share attributable to Intuitive Surgical, Inc. common stockholders because the effect of including such shares would have been anti-dilutive in the periods presented.