Licensing, Acquisitions and Other Arrangements (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Collaborative and license agreements | ||
| Cash outflows related to acquisitions and investments | $ 266 | $ 334 |
| Acquired IPR&D and milestones | 744 | 248 |
| Collaborative arrangement | ||
| Collaborative and license agreements | ||
| Research and development milestone expenses | 41 | 2 |
| Other Collaboration Arrangements | Collaborative arrangement | ||
| Collaborative and license agreements | ||
| Acquired IPR&D and milestones | 703 | $ 246 |
| RemeGen | ||
| Collaborative and license agreements | ||
| Acquired IPR&D and milestones | 650 | |
| RemeGen | Collaborative arrangement | ||
| Collaborative and license agreements | ||
| Potential Payments under Agreement Certain Milestones | $ 5,000 | |