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 June 30, | | Six Months Ended June 30, | | | 2024 | | 2023 | | 2024 | | 2023 | | Numerator: | | | | | | | | | Net income attributable to Intuitive Surgical, Inc. | $ | 526.9 | | | $ | 420.8 | | | $ | 1,071.8 | | | $ | 776.1 | | | Denominator: | | | | | | | | | Weighted-average shares outstanding used in basic calculation | 355.0 | | | 350.9 | | | 354.2 | | | 350.6 | | | Add: dilutive effect of potential common shares | 6.0 | | | 6.4 | | | 6.6 | | | 6.0 | | | Weighted-average shares outstanding used in diluted calculation | 361.0 | | | 357.3 | | | 360.8 | | | 356.6 | | | Net income per share attributable to Intuitive Surgical, Inc.: | | | | | | | | | Basic | $ | 1.48 | | | $ | 1.20 | | | $ | 3.03 | | | $ | 2.21 | | | Diluted | $ | 1.46 | | | $ | 1.18 | | | $ | 2.97 | | | $ | 2.18 | |
|