v3.26.3
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 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Numerator:        
Net income attributable to Intuitive Surgical, Inc. $ 522.8 $ 704.4 $ 2,162.4 $ 2,061.2
Denominator:        
Weighted-average shares outstanding used in basic calculation (in shares) 349.0 356.6 352.6 357.5
Add: dilutive effect of potential common shares (in shares) 2.6 5.2 3.6 6.0
Weighted-average shares outstanding used in diluted calculation (in shares) 351.6 361.8 356.2 363.5
Net income per share attributable to Intuitive Surgical, Inc.:        
Basic (in dollars per share) $ 1.50 $ 1.98 $ 6.13 $ 5.77
Diluted (in dollars per share) $ 1.49 $ 1.95 $ 6.07 $ 5.67