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NET INCOME PER SHARE
 6 Months Ended
Jun. 30, 2026
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 June 30,Six Months Ended June 30,
 2026202520262025
Numerator:
Net income attributable to Intuitive Surgical, Inc.$818.1 $658.4 $1,639.6 $1,356.8 
Denominator:
Weighted-average shares outstanding used in basic calculation354.1 358.5 354.5 358.0 
Add: dilutive effect of potential common shares3.2 5.6 4.0 6.4 
Weighted-average shares outstanding used in diluted calculation357.3 364.1 358.5 364.4 
Net income per share attributable to Intuitive Surgical, Inc.:
Basic$2.31 $1.84 $4.63 $3.79 
Diluted$2.29 $1.81 $4.57 $3.72 
Share-based compensation awards of approximately 3.0 million and 1.5 million shares for the three months ended June 30, 2026, and 2025, respectively, and approximately 1.6 million and 1.1 million shares for the six months ended June 30, 2026, and 2025, 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.