Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Total revenue	$ 1,099.5	$ 973.7
Cost of revenue:
Total cost of revenue	361.3	304.1
Gross profit	738.2	669.6
Operating expenses:
Selling, general and administrative	308.1	273.4
Research and development	147.1	144.0
Total operating expenses	455.2	417.4
Income from operations	283.0	252.2
Interest and other income, net	25.1	27.5
Income before taxes	308.1	279.7
Income tax expense	(8.1)	(24.3)
Net income	316.2	304.0
Less: net loss attributable to noncontrolling interest in joint venture	2.7	(2.5)
Net income attributable to Intuitive Surgical, Inc.	$ 313.5	$ 306.5
Net income per share attributable to Intuitive Surgical, Inc.:
Basic (in dollars per share)	$ 2.69	$ 2.67
Diluted (in dollars per share)	$ 2.62	$ 2.56
Shares used in computing net income per share attributable to Intuitive Surgical, Inc.:
Basic (in shares)	116,400	115,000
Diluted (in shares)	119,800	119,600
Total comprehensive income attributable to Intuitive Surgical, Inc.	$ 310.0	$ 319.1
Product
Revenue:
Total revenue	900.8	799.8
Cost of revenue:
Total cost of revenue	296.7	246.4
Service
Revenue:
Total revenue	198.7	173.9
Cost of revenue:
Total cost of revenue	$ 64.6	$ 57.7