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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, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Numerator:        
Net income attributable to Intuitive Surgical, Inc. $ 565.1 $ 415.7 $ 1,636.9 $ 1,191.8
Denominator:        
Weighted-average shares outstanding used in basic calculation (in shares) 355.8 351.7 354.8 351.0
Add: dilutive effect of potential common shares (in shares) 6.9 6.5 6.6 6.1
Weighted-average shares outstanding used in diluted calculation (in shares) 362.7 358.2 361.4 357.1
Net income per share attributable to Intuitive Surgical, Inc.:        
Basic (in dollars per share) $ 1.59 $ 1.18 $ 4.61 $ 3.40
Diluted (in dollars per share) $ 1.56 $ 1.16 $ 4.53 $ 3.34