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Selected Quarterly Data | 12 Months Ended
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Dec. 31, 2020
Selected Quarterly Financial Information [Abstract] |
Selected Quarterly Data |
| Three Months Ended
| December 31, 2020 |  | September 30, 2020 |  | June 30, 2020 |  | March 31, 2020
Revenue | $ | 1,329.1 |  |  | $ | 1,077.7 |  |  | $ | 852.1 |  |  | $ | 1,099.5 |
Gross profit | $ | 895.8 |  |  | $ | 724.3 |  |  | $ | 502.9 |  |  | $ | 738.2 |
Net income attributable to Intuitive Surgical, Inc. (1)(2)(3) | $ | 365.2 |  |  | $ | 313.9 |  |  | $ | 68 |  |  | $ | 313.5 |
Net income attributable to Intuitive Surgical, Inc. per share: |  |  |  |  |  |  |
Basic | $ | 3.11 |  |  | $ | 2.68 |  |  | $ | 0.58 |  |  | $ | 2.69 |
Diluted | $ | 3.02 |  |  | $ | 2.60 |  |  | $ | 0.57 |  |  | $ | 2.62 |
(1) Includes discrete tax benefits as follows: |  |  |  |  |  |  |
Excess tax benefits related to share-based compensation arrangements | $ | 21.3 |  |  | $ | 47.9 |  |  | $ | 31.6 |  |  | $ | 65.4 |
Discrete tax expense arising from the conclusion of a tax matter | $ | — |  |  | $ | — |  |  | $ | (36.8) |  |  | $ | — |
(2) Includes acquisition-related benefits (charges) | $ | (2.9) |  |  | $ | (4.6) |  |  | $ | (4.4) |  |  | $ | 1.4 |
(3) Includes charitable foundation contribution expense | $ | (25.0) |  |  | $ | — |  |  | $ | — |  |  | $ | — |
| Three Months Ended
| December 31, 2019 |  | September 30, 2019 |  | June 30, 2019 |  | March 31, 2019
Revenue | $ | 1,277.7 |  |  | $ | 1,128.2 |  |  | $ | 1,098.9 |  |  | $ | 973.7 |
Gross profit | $ | 896.0 |  |  | $ | 785.6 |  |  | $ | 759.0 |  |  | $ | 669.6 |
Net income attributable to Intuitive Surgical, Inc. (1)(2)(3) | $ | 357.7 |  |  | $ | 396.8 |  |  | $ | 318.3 |  |  | $ | 306.5 |
Net income attributable to Intuitive Surgical, Inc. per share: |  |  |  |  |  |  |
Basic | $ | 3.09 |  |  | $ | 3.44 |  |  | $ | 2.76 |  |  | $ | 2.67 |
Diluted | $ | 2.99 |  |  | $ | 3.33 |  |  | $ | 2.67 |  |  | $ | 2.56 |
(1) Includes discrete tax benefits as follows: |  |  |  |  |  |  |
Excess tax benefits related to share-based compensation arrangements | $ | 33.7 |  |  | $ | 28.8 |  |  | $ | 11.3 |  |  | $ | 72.7 |
One-time tax benefit related to the enactment of Swiss tax reform | $ | — |  |  | $ | 51.3 |  |  | $ | — |  |  | $ | — |
(2) Includes acquisition-related benefits (charges) | $ | (3.1) |  |  | $ | 3.0 |  |  | $ | (4.1) |  |  | $ | (3.0) |
(3) Includes charitable foundation contribution expense | $ | (5.0) |  |  | $ | — |  |  | $ | — |  |  | $ | — |

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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- References No definition available. + Details
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