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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income attributable to Intuitive Surgical, Inc.	$ 415.7	$ 324.0	$ 1,191.8	$ 997.4
Denominator:
Weighted-average shares outstanding used in basic calculation (in shares)	351.7	355.3	351.0	357.2
Add: dilutive effect of potential common shares (in shares)	6.5	5.2	6.1	6.5
Weighted-average shares outstanding used in diluted calculation (in shares)	358.2	360.5	357.1	363.7
Net income per share attributable to Intuitive Surgical, Inc.:
Basic (in dollars per share)	$ 1.18	$ 0.91	$ 3.40	$ 2.79
Diluted (in dollars per share)	$ 1.16	$ 0.90	$ 3.34	$ 2.74