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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 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Numerator:        
Net income attributable to Intuitive Surgical, Inc. $ 526.9 $ 420.8 $ 1,071.8 $ 776.1
Denominator:        
Weighted-average shares outstanding used in basic calculation (in shares) 355.0 350.9 354.2 350.6
Add: dilutive effect of potential common shares (in shares) 6.0 6.4 6.6 6.0
Weighted-average shares outstanding used in diluted calculation (in shares) 361.0 357.3 360.8 356.6
Net income per share attributable to Intuitive Surgical, Inc.:        
Basic (in dollars per share) $ 1.48 $ 1.20 $ 3.03 $ 2.21
Diluted (in dollars per share) $ 1.46 $ 1.18 $ 2.97 $ 2.18