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Net Income Per Share
 12 Months Ended
Dec. 31, 2023
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,
 202320222021
Numerator:
Net income attributable to Intuitive Surgical, Inc.$1,798.0 $1,322.3 $1,704.6 
Denominator:
Weighted-average shares outstanding used in basic calculation351.2 355.7 356.1 
Add: dilutive effect of potential common shares6.2 6.3 9.7 
Weighted-average shares outstanding used in diluted calculation357.4 362.0 365.8 
Net income per share attributable to Intuitive Surgical, Inc.:
Basic$5.12 $3.72 $4.79 
Diluted$5.03 $3.65 $4.66 
Share-based compensation awards of approximately 1.9 million, 3.4 million, and 0.8 million shares for the years ended December 31, 2023, 2022, and 2021, 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.