NET INCOME PER SHARE

3 Months Ended

Mar. 31, 2020

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):

	Three Months Ended  March 31,
	2020		2019
Numerator:
Net income attributable to Intuitive Surgical, Inc.	$	313.5	$	306.5
Denominator:
Weighted average shares outstanding used in basic calculation	116.4		115.0
Add: dilutive effect of potential common shares	3.4		4.6
Weighted average shares outstanding used in diluted calculation	119.8		119.6
Net income per share attributable to Intuitive Surgical, Inc.:
Basic	$	2.69	$	2.67
Diluted	$	2.62	$	2.56

Share-based compensation awards of approximately 1.0 million and 0.8 million shares for the three months ended March 31, 2020, and 2019, 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.