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EARNINGS (LOSS) PER SHARE (Tables) | 3 Months Ended
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Mar. 31, 2025
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 |  |
|  | March 31, |  |
(in millions, except per share amounts) |  | 2025 |  | 2024 |  |  |  |
Net income (loss) attributable to Gilead |  | $ | 1,315 |  |  | $ | (4,170) |  |  |  |  |
Shares used in basic earnings (loss) per share attributable to Gilead calculation |  | 1,246 |  |  | 1,247 |  |  |  |  |
Dilutive effect of stock options and equivalents |  | 13 |  |  | — |  |  |  |  |
Shares used in diluted earnings (loss) per share attributable to Gilead calculation |  | 1,259 |  |  | 1,247 |  |  |  |  |
Basic earnings (loss) per share attributable to Gilead |  | $ | 1.06 |  |  | $ | (3.34) |  |  |  |  |
Diluted earnings (loss) per share attributable to Gilead |  | $ | 1.04 |  |  | $ | (3.34) |  |  |  |  |

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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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