v3.26.1
NET INCOME PER SHARE - Computation of Basic and Diluted Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
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 calculation (in shares) 354.1 358.5 354.5 358.0
Add: dilutive effect of potential common shares (in shares) 3.2 5.6 4.0 6.4
Weighted-average shares outstanding used in diluted calculation (in shares) 357.3 364.1 358.5 364.4
Net income per share attributable to Intuitive Surgical, Inc.:        
Basic (in dollars per share) $ 2.31 $ 1.84 $ 4.63 $ 3.79
Diluted (in dollars per share) $ 2.29 $ 1.81 $ 4.57 $ 3.72