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| 0000875045-22-000013-index.html | 2022-05-03 07:11:33 | |
| 0000875045-22-000013.txt | 2022-05-03 07:11:33 | |
 0000875045-22-000013-xbrl.zip | 42042 | 2022-05-03 07:11:33 |
| biib-20220503.htm | 33903 | 2022-05-03 07:11:33 |
| biib-20220503.xsd | 1933 | 2022-05-03 07:11:33 |
| biib-20220503_htm.xml | 10549 | 2022-05-03 07:11:33 |
| biib-20220503_lab.xml | 24275 | 2022-05-03 07:11:33 |
| biib-20220503_pre.xml | 12662 | 2022-05-03 07:11:33 |
 biogenlogostandarda29.jpg | 756402 | 2022-05-03 07:11:33 |
| exhibit101letteragreement.htm | 24119 | 2022-05-03 07:11:33 |
| exhibit991-q12022pressrele.htm | 348085 | 2022-05-03 07:11:33 |
| FilingSummary.xml | 1722 | 2022-05-03 07:11:33 |
| Financial_Report.xlsx | 5653 | 2022-05-03 07:11:33 |
| MetaLinks.json | 16982 | 2022-05-03 07:11:33 |
| R1.htm | 38719 | 2022-05-03 07:11:33 |
| report.css | 2767 | 2022-05-03 07:11:33 |
| Show.js | 1085 | 2022-05-03 07:11:33 |