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|---|---|---|
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| 0000875045-25-000009-index.html | 2025-02-12 17:28:51 | |
| 0000875045-25-000009.txt | 2025-02-12 17:28:51 | |
 0000875045-25-000009-xbrl.zip | 1679042 | 2025-02-12 17:28:51 |
| biib-20241231.htm | 4345645 | 2025-02-12 17:28:51 |
| biib-20241231.xsd | 159851 | 2025-02-12 17:28:51 |
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 biib-20241231_g9.jpg | 73467 | 2025-02-12 17:28:51 |
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| exhibit191-insidertradinga.htm | 144199 | 2025-02-12 17:28:51 |
| FilingSummary.xml | 97478 | 2025-02-12 17:28:51 |
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