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Consolidated Statements Of Stockholders' Equity - USD ($)
shares in Millions, $ in Millions
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Total Intuitive Surgical, Inc. Stockholders’ Equity
Non controlling Interest
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 3,379.4 $ 0.0 $ 2,896.8 $ 487.7 $ (5.1) $ 3,379.4 $ 0.0
Beginning balances (shares) at Dec. 31, 2014   36.6          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock upon exercise of options and under stock purchase plan (in shares)   1.2          
Issuance of common stock through employee stock plans 361.1   361.1     361.1  
Income tax benefit from employee stock plans 21.4   21.4     21.4  
Shares withheld related to net share settlement of equity awards (11.0)   (1.1) (9.9)   (11.0)  
Share-based compensation expense related to employee stock plans 167.9   167.9     167.9  
Repurchase and retirement of common stock (in shares)   (0.4)          
Repurchase and retirement of common stock (183.7)   (16.3) (167.4)   (183.7)  
Net income 588.8     588.8   588.8  
Other comprehensive loss (4.4)       (4.4) (4.4)  
Ending balances (shares) at Dec. 31, 2015   37.4          
Ending balance at Dec. 31, 2015         (9.5)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 4,319.5 $ 0.0 3,429.8 899.2 (9.5) 4,319.5 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock upon exercise of options and under stock purchase plan (in shares)   1.5          
Issuance of common stock through employee stock plans 580.9   580.9     580.9  
Income tax benefit from employee stock plans 29.8   29.8     29.8  
Shares withheld related to net share settlement of equity awards (24.0)   (2.2) (21.8)   (24.0)  
Share-based compensation expense related to employee stock plans 177.6   177.6     177.6  
Repurchase and retirement of common stock (in shares)   (0.1)          
Repurchase and retirement of common stock (42.5)   (4.1) (38.4)   (42.5)  
Net income 735.9     735.9   735.9  
Other comprehensive loss $ 0.6       0.6 0.6  
Ending balances (shares) at Dec. 31, 2016 116.4 38.8          
Ending balance at Dec. 31, 2016 $ 5,777.8       (8.9)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 5,777.8 $ 0.0 4,211.8 1,574.9 (8.9) 5,777.8 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Three-for-one stock split (shares)   77.6          
Three-for-one stock split 0.0 $ 0.1 (0.1)        
Proceeds from Noncontrolling Interests 2.0           2.0
Issuance of common stock upon exercise of options and under stock purchase plan (in shares)   3.4          
Issuance of common stock through employee stock plans 415.5   415.5     415.5  
Shares withheld related to net share settlement of equity awards (shares)   (0.2)          
Shares withheld related to net share settlement of equity awards (56.6)   (5.1) (51.5)   (56.6)  
Share-based compensation expense related to employee stock plans 209.1   209.1     209.1  
Repurchase and retirement of common stock (in shares)   (7.3)          
Repurchase and retirement of common stock (2,274.0)   (152.0) (2,122.0)   (2,274.0)  
Net income 660.0     660.0   660.0  
Other comprehensive loss (6.6)       (6.6) (6.6)  
Loss in noncontrolling interest $ (0.4)           (0.4)
Ending balances (shares) at Dec. 31, 2017 112.3 112.3          
Ending balance at Dec. 31, 2017 $ 4,725.2       (15.5)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 4,726.8 $ 0.1 $ 4,679.2 $ 61.4 $ (15.5) $ 4,725.2 $ 1.6