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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, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Numerator:        
Net income attributable to Intuitive Surgical, Inc. $ 307.8 $ 517.2 $ 673.4 $ 943.5
Denominator:        
Weighted average shares outstanding used in basic calculation (in shares) 358.1 355.7 358.2 355.0
Add: dilutive effect of potential common shares (in shares) 5.8 9.2 7.1 9.5
Weighted average shares outstanding used in diluted calculation (in shares) 363.9 364.9 365.3 364.5
Net income per share attributable to Intuitive Surgical, Inc.:        
Basic (in dollars per share) $ 0.86 $ 1.45 $ 1.88 $ 2.66
Diluted (in dollars per share) $ 0.85 $ 1.42 $ 1.84 $ 2.59