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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 |

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