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EARNINGS (LOSS) PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2024
Earnings Per Share [Abstract] |
Summary of the Calculation of Basic and Diluted Earnings (Loss) Per Share | The following table shows the calculation of Basic and Diluted earnings (loss) per share attributable to Gilead:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
(in millions, except per share amounts) |  | 2024 |  | 2023 |  | 2024 |  | 2023
Net income (loss) attributable to Gilead |  | $ | 1,253 |  |  | $ | 2,180 |  |  | $ | (1,303) |  |  | $ | 4,236 |
Shares used in basic earnings (loss) per share attributable to Gilead calculation |  | 1,247 |  |  | 1,248 |  |  | 1,247 |  |  | 1,249 |
Dilutive effect of stock options and equivalents |  | 7 |  |  | 8 |  |  | — |  |  | 10 |
Shares used in diluted earnings (loss) per share attributable to Gilead calculation |  | 1,254 |  |  | 1,257 |  |  | 1,247 |  |  | 1,259 |
Basic earnings (loss) per share attributable to Gilead |  | $ | 1.00 |  |  | $ | 1.75 |  |  | $ | (1.04) |  |  | $ | 3.39 |
Diluted earnings (loss) per share attributable to Gilead |  | $ | 1.00 |  |  | $ | 1.73 |  |  | $ | (1.04) |  |  | $ | 3.37 |

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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