Stockholders’ Equity - Estimate Grant-Date Fair Value (Details) |
6 Months Ended |
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Jul. 04, 2025
$ / shares
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| 2025 TSR-based RSUs | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Weighted average grant date fair value, awarded (in dollars per share) | $ 47.58 |
| Fair value of Exelixis common stock on grant date (in dollars per share) | $ 37.53 |
| Expected volatility | 32.60% |
| Risk-free interest rate | 4.00% |
| Dividend yield | 0.00% |
| 2025 stock price target-based RSUs | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Weighted average grant date fair value, awarded (in dollars per share) | $ 25.10 |
| Fair value of Exelixis common stock on grant date (in dollars per share) | $ 36.92 |
| Expected volatility | 38.30% |
| Risk-free interest rate | 3.90% |
| Dividend yield | 0.00% |
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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