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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Schedule Of Stock Repurchase Activities | The following table summarizes stock repurchase activities (in millions, except per share amounts):
| Years Ended December 31,
| 2023 |  | 2022 |  | 2021
Shares repurchased | 1.7 |  |  | 11.2 |  |  | — |
Average price per share | $ | 241.38 |  |  | $ | 233.70 |  |  | $ | — |
Value of shares repurchased | $ | 416.3 |  |  | $ | 2,607.4 |  |  | $ | — |
Components of Accumulated Other Comprehensive Income (Loss), Net of Tax | The components of accumulated other comprehensive income (loss), net of tax, attributable to Intuitive Surgical, Inc. are as follows (in millions):
| Year Ended December 31, 2023
| Gains (Losses) on Hedge Instruments |  | Unrealized Gains (Losses) on Available-for-Sale Securities |  | Foreign Currency Translation Gains (Losses) |  | Employee Benefit Plans |  | Total
Beginning balance | $ | (2.9) |  |  | $ | (154.2) |  |  | $ | (6.6) |  |  | $ | 1.2 |  |  | $ | (162.5) |
Other comprehensive income (loss) before reclassifications | (6.6) |  |  | 124.6 |  |  | 26.0 |  |  | (0.6) |  |  | 143.4 |
Amounts reclassified from accumulated other comprehensive income (loss) | 7.0 |  |  | (0.1) |  |  | — |  |  | — |  |  | 6.9 |
Net current-period other comprehensive income (loss) | 0.4 |  |  | 124.5 |  |  | 26.0 |  |  | (0.6) |  |  | 150.3 |
Ending balance | $ | (2.5) |  |  | $ | (29.7) |  |  | $ | 19.4 |  |  | $ | 0.6 |  |  | $ | (12.2) |
| Year Ended December 31, 2022
| Gains (Losses) on Hedge Instruments |  | Unrealized Gains (Losses) on Available-for-Sale Securities |  | Foreign Currency Translation Gains (Losses) |  | Employee Benefit Plans |  | Total
Beginning balance | $ | 4.5 |  |  | $ | (16.0) |  |  | $ | (7.9) |  |  | $ | (4.8) |  |  | $ | (24.2) |
Other comprehensive income (loss) before reclassifications | (35.0) |  |  | (138.2) |  |  | 1.3 |  |  | 5.8 |  |  | (166.1) |
Amounts reclassified from accumulated other comprehensive income (loss) | 27.6 |  |  | — |  |  | — |  |  | 0.2 |  |  | 27.8 |
Net current-period other comprehensive income (loss) | (7.4) |  |  | (138.2) |  |  | 1.3 |  |  | 6.0 |  |  | (138.3) |
Ending balance | $ | (2.9) |  |  | $ | (154.2) |  |  | $ | (6.6) |  |  | $ | 1.2 |  |  | $ | (162.5) |
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) | The tax impacts for amounts recognized in other comprehensive income before reclassifications were as follows (in millions):
| Years Ended December 31, |  |
Available-for-sale securities | 2023 |  | 2022 |  |
Income tax benefit (expense) for net gains (losses) recorded in other comprehensive income (loss) | $ | (35.7) |  |  | $ | 39.1 |  |  |

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