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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
Mar. 31, 2025
Mar. 31, 2024
Numerator:    
Net income attributable to Intuitive Surgical, Inc. $ 698.4 $ 544.9
Denominator:    
Weighted-average shares outstanding used in basic calculation (in shares) 357.5 353.5
Add: dilutive effect of potential common shares (in shares) 7.1 7.0
Weighted-average shares outstanding used in diluted calculation (in shares) 364.6 360.5
Net income per share attributable to Intuitive Surgical, Inc.:    
Basic (in dollars per share) $ 1.95 $ 1.54
Diluted (in dollars per share) $ 1.92 $ 1.51