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NET INCOME PER SHARE (Tables) | 3 Months Ended
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Mar. 31, 2022
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Net Income Per Share | The following table presents the computation of basic and diluted net income per share attributable to Intuitive Surgical, Inc. (in millions, except per share amounts):
| Three Months Ended March 31, |  |
| 2022 |  | 2021 |  |  |  |
Numerator: |  |  |  |  |  |  |
Net income attributable to Intuitive Surgical, Inc. | $ | 365.6 |  |  | $ | 426.3 |  |  |  |  |
Denominator: |  |  |  |  |  |  |
Weighted average shares outstanding used in basic calculation | 358.4 |  |  | 354.2 |  |  |  |  |
Add: dilutive effect of potential common shares | 8.3 |  |  | 9.8 |  |  |  |  |
Weighted average shares outstanding used in diluted calculation | 366.7 |  |  | 364.0 |  |  |  |  |
Net income per share attributable to Intuitive Surgical, Inc.: |  |  |  |  |  |  |
Basic | $ | 1.02 |  |  | $ | 1.20 |  |  |  |  |
Diluted | $ | 1.00 |  |  | $ | 1.17 |  |  |  |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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