Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000875045-23-000009-index-headers.html | 2023-02-15 16:24:20 | |
| 0000875045-23-000009-index.html | 2023-02-15 16:24:20 | |
| 0000875045-23-000009.txt | 2023-02-15 16:24:20 | |
 0000875045-23-000009-xbrl.zip | 2573164 | 2023-02-15 16:24:20 |
| biib-20221231.htm | 5239202 | 2023-02-15 16:24:20 |
| biib-20221231.xsd | 148885 | 2023-02-15 16:24:20 |
| biib-20221231xex21.htm | 44946 | 2023-02-15 16:24:20 |
| biib-20221231xex23.htm | 2695 | 2023-02-15 16:24:20 |
| biib-20221231xex311.htm | 11068 | 2023-02-15 16:24:20 |
| biib-20221231xex312.htm | 10811 | 2023-02-15 16:24:20 |
| biib-20221231xex321.htm | 8947 | 2023-02-15 16:24:20 |
| biib-20221231_cal.xml | 152895 | 2023-02-15 16:24:20 |
| biib-20221231_def.xml | 996571 | 2023-02-15 16:24:20 |
 biib-20221231_g1.jpg | 14533 | 2023-02-15 16:24:20 |
 biib-20221231_g10.jpg | 25230 | 2023-02-15 16:24:20 |
 biib-20221231_g11.jpg | 127907 | 2023-02-15 16:24:20 |
 biib-20221231_g12.jpg | 12986 | 2023-02-15 16:24:20 |
 biib-20221231_g13.jpg | 13199 | 2023-02-15 16:24:20 |
 biib-20221231_g14.jpg | 12208 | 2023-02-15 16:24:20 |
 biib-20221231_g15.jpg | 18739 | 2023-02-15 16:24:20 |
 biib-20221231_g16.jpg | 10352 | 2023-02-15 16:24:20 |
 biib-20221231_g17.jpg | 10791 | 2023-02-15 16:24:20 |
 biib-20221231_g18.jpg | 23004 | 2023-02-15 16:24:20 |
 biib-20221231_g19.jpg | 27865 | 2023-02-15 16:24:20 |
 biib-20221231_g2.jpg | 140813 | 2023-02-15 16:24:20 |
 biib-20221231_g20.jpg | 11887 | 2023-02-15 16:24:20 |
 biib-20221231_g21.jpg | 2905 | 2023-02-15 16:24:20 |
 biib-20221231_g22.jpg | 112433 | 2023-02-15 16:24:20 |
 biib-20221231_g23.jpg | 77186 | 2023-02-15 16:24:20 |
 biib-20221231_g24.jpg | 83188 | 2023-02-15 16:24:20 |
 biib-20221231_g25.jpg | 59915 | 2023-02-15 16:24:20 |
 biib-20221231_g26.jpg | 55308 | 2023-02-15 16:24:20 |
 biib-20221231_g27.jpg | 73286 | 2023-02-15 16:24:20 |
 biib-20221231_g28.jpg | 82790 | 2023-02-15 16:24:20 |
 biib-20221231_g29.jpg | 55162 | 2023-02-15 16:24:20 |
 biib-20221231_g3.jpg | 12294 | 2023-02-15 16:24:20 |
 biib-20221231_g30.jpg | 73660 | 2023-02-15 16:24:20 |
 biib-20221231_g31.jpg | 60720 | 2023-02-15 16:24:20 |
 biib-20221231_g32.jpg | 68402 | 2023-02-15 16:24:20 |
 biib-20221231_g33.jpg | 115417 | 2023-02-15 16:24:20 |
 biib-20221231_g34.jpg | 37604 | 2023-02-15 16:24:20 |
 biib-20221231_g35.jpg | 36834 | 2023-02-15 16:24:20 |
 biib-20221231_g36.jpg | 37829 | 2023-02-15 16:24:20 |
 biib-20221231_g37.jpg | 35732 | 2023-02-15 16:24:20 |
 biib-20221231_g38.jpg | 32398 | 2023-02-15 16:24:20 |
 biib-20221231_g39.jpg | 32553 | 2023-02-15 16:24:20 |
 biib-20221231_g4.jpg | 8296 | 2023-02-15 16:24:20 |
 biib-20221231_g40.jpg | 37400 | 2023-02-15 16:24:20 |
 biib-20221231_g41.jpg | 63997 | 2023-02-15 16:24:20 |
 biib-20221231_g42.jpg | 36488 | 2023-02-15 16:24:20 |
 biib-20221231_g43.jpg | 36720 | 2023-02-15 16:24:20 |
 biib-20221231_g5.jpg | 9588 | 2023-02-15 16:24:20 |
 biib-20221231_g6.jpg | 8254 | 2023-02-15 16:24:20 |
 biib-20221231_g7.jpg | 11034 | 2023-02-15 16:24:20 |
 biib-20221231_g8.jpg | 17632 | 2023-02-15 16:24:20 |
 biib-20221231_g9.jpg | 22513 | 2023-02-15 16:24:20 |
| biib-20221231_htm.xml | 4658537 | 2023-02-15 16:24:20 |
| biib-20221231_lab.xml | 1470491 | 2023-02-15 16:24:20 |
| biib-20221231_pre.xml | 1279693 | 2023-02-15 16:24:20 |
| exhibit103amendmenttocredi.htm | 1381770 | 2023-02-15 16:24:20 |
| exhibit1045amendedandresta.htm | 1623471 | 2023-02-15 16:24:20 |
| exhibit1046firstamendmentt.htm | 21576 | 2023-02-15 16:24:20 |
| exhibit10ormofnonqualified.htm | 26855 | 2023-02-15 16:24:20 |
| FilingSummary.xml | 93563 | 2023-02-15 16:24:20 |
| Financial_Report.xlsx | 294455 | 2023-02-15 16:24:20 |
 image_0a.jpg | 97 | 2023-02-15 16:24:20 |
 image_1.jpg | 5287 | 2023-02-15 16:24:20 |
 image_10.jpg | 8139 | 2023-02-15 16:24:20 |
 image_11.jpg | 5347 | 2023-02-15 16:24:20 |
 image_12.jpg | 5122 | 2023-02-15 16:24:20 |
 image_13.jpg | 5367 | 2023-02-15 16:24:20 |
 image_14.jpg | 8364 | 2023-02-15 16:24:20 |
 image_15.jpg | 7775 | 2023-02-15 16:24:20 |
 image_16.jpg | 7961 | 2023-02-15 16:24:20 |
 image_17.jpg | 5443 | 2023-02-15 16:24:20 |
 image_2.jpg | 7162 | 2023-02-15 16:24:20 |
 image_20.jpg | 390 | 2023-02-15 16:24:20 |
 image_28.jpg | 4791 | 2023-02-15 16:24:20 |
 image_29.jpg | 442 | 2023-02-15 16:24:20 |
 image_32.jpg | 96 | 2023-02-15 16:24:20 |
 image_4.jpg | 5535 | 2023-02-15 16:24:20 |
 image_5.jpg | 5947 | 2023-02-15 16:24:20 |
 image_53.jpg | 8358 | 2023-02-15 16:24:20 |
 image_57.jpg | 6434 | 2023-02-15 16:24:20 |
 image_6.jpg | 5507 | 2023-02-15 16:24:20 |
 image_6a.jpg | 5287 | 2023-02-15 16:24:20 |
 image_7.jpg | 6574 | 2023-02-15 16:24:20 |
 image_8.jpg | 5202 | 2023-02-15 16:24:20 |
 image_9.jpg | 5811 | 2023-02-15 16:24:20 |
| MetaLinks.json | 1551744 | 2023-02-15 16:24:20 |
| R1.htm | 62340 | 2023-02-15 16:24:20 |
| R10.htm | 6582 | 2023-02-15 16:24:20 |
| R100.htm | 8880 | 2023-02-15 16:24:20 |
| R101.htm | 41165 | 2023-02-15 16:24:20 |
| R102.htm | 47088 | 2023-02-15 16:24:20 |
| R103.htm | 34734 | 2023-02-15 16:24:20 |
| R104.htm | 4604 | 2023-02-15 16:24:20 |
| R105.htm | 19632 | 2023-02-15 16:24:20 |
| R106.htm | 28410 | 2023-02-15 16:24:20 |
| R107.htm | 87311 | 2023-02-15 16:24:20 |
| R108.htm | 6726 | 2023-02-15 16:24:20 |
| R109.htm | 25989 | 2023-02-15 16:24:20 |
| R11.htm | 13746 | 2023-02-15 16:24:20 |
| R110.htm | 22329 | 2023-02-15 16:24:20 |
| R111.htm | 25092 | 2023-02-15 16:24:20 |
| R112.htm | 21142 | 2023-02-15 16:24:20 |
| R113.htm | 13144 | 2023-02-15 16:24:20 |
| R114.htm | 29627 | 2023-02-15 16:24:20 |
| R115.htm | 11359 | 2023-02-15 16:24:20 |
| R116.htm | 40553 | 2023-02-15 16:24:20 |
| R117.htm | 81921 | 2023-02-15 16:24:20 |
| R118.htm | 37546 | 2023-02-15 16:24:20 |
| R119.htm | 32761 | 2023-02-15 16:24:20 |
| R12.htm | 17564 | 2023-02-15 16:24:20 |
| R120.htm | 16116 | 2023-02-15 16:24:20 |
| R121.htm | 7505 | 2023-02-15 16:24:20 |
| R122.htm | 27410 | 2023-02-15 16:24:20 |
| R123.htm | 12131 | 2023-02-15 16:24:20 |
| R124.htm | 9502 | 2023-02-15 16:24:20 |
| R125.htm | 18061 | 2023-02-15 16:24:20 |
| R126.htm | 15539 | 2023-02-15 16:24:20 |
| R127.htm | 14044 | 2023-02-15 16:24:20 |
| R128.htm | 9225 | 2023-02-15 16:24:20 |
| R129.htm | 21434 | 2023-02-15 16:24:20 |
| R13.htm | 174783 | 2023-02-15 16:24:20 |
| R130.htm | 7671 | 2023-02-15 16:24:20 |
| R131.htm | 19474 | 2023-02-15 16:24:20 |
| R132.htm | 65129 | 2023-02-15 16:24:20 |
| R133.htm | 12479 | 2023-02-15 16:24:20 |
| R134.htm | 12315 | 2023-02-15 16:24:20 |
| R135.htm | 43884 | 2023-02-15 16:24:20 |
| R136.htm | 20504 | 2023-02-15 16:24:20 |
| R137.htm | 8388 | 2023-02-15 16:24:20 |
| R138.htm | 16904 | 2023-02-15 16:24:20 |
| R139.htm | 9418 | 2023-02-15 16:24:20 |
| R14.htm | 21828 | 2023-02-15 16:24:20 |
| R140.htm | 57231 | 2023-02-15 16:24:20 |
| R141.htm | 11479 | 2023-02-15 16:24:20 |
| R142.htm | 8409 | 2023-02-15 16:24:20 |
| R143.htm | 8447 | 2023-02-15 16:24:20 |
| R144.htm | 131926 | 2023-02-15 16:24:20 |
| R145.htm | 32974 | 2023-02-15 16:24:20 |
| R146.htm | 4919 | 2023-02-15 16:24:20 |
| R147.htm | 59713 | 2023-02-15 16:24:20 |
| R148.htm | 29236 | 2023-02-15 16:24:20 |
| R149.htm | 9329 | 2023-02-15 16:24:20 |
| R15.htm | 50984 | 2023-02-15 16:24:20 |
| R150.htm | 47236 | 2023-02-15 16:24:20 |
| R16.htm | 122258 | 2023-02-15 16:24:20 |
| R17.htm | 94617 | 2023-02-15 16:24:20 |
| R18.htm | 78517 | 2023-02-15 16:24:20 |
| R19.htm | 23130 | 2023-02-15 16:24:20 |
| R2.htm | 7826 | 2023-02-15 16:24:20 |
| R20.htm | 54944 | 2023-02-15 16:24:20 |
| R21.htm | 44567 | 2023-02-15 16:24:20 |
| R22.htm | 111426 | 2023-02-15 16:24:20 |
| R23.htm | 22323 | 2023-02-15 16:24:20 |
| R24.htm | 116094 | 2023-02-15 16:24:20 |
| R25.htm | 106677 | 2023-02-15 16:24:20 |
| R26.htm | 50236 | 2023-02-15 16:24:20 |
| R27.htm | 149995 | 2023-02-15 16:24:20 |
| R28.htm | 14252 | 2023-02-15 16:24:20 |
| R29.htm | 20471 | 2023-02-15 16:24:20 |
| R3.htm | 101096 | 2023-02-15 16:24:20 |
| R30.htm | 15350 | 2023-02-15 16:24:20 |
| R31.htm | 6902 | 2023-02-15 16:24:20 |
| R32.htm | 14849 | 2023-02-15 16:24:20 |
| R33.htm | 58632 | 2023-02-15 16:24:20 |
| R34.htm | 173280 | 2023-02-15 16:24:20 |
| R35.htm | 8609 | 2023-02-15 16:24:20 |
| R36.htm | 11556 | 2023-02-15 16:24:20 |
| R37.htm | 181499 | 2023-02-15 16:24:20 |
| R38.htm | 18493 | 2023-02-15 16:24:20 |
| R39.htm | 42415 | 2023-02-15 16:24:20 |
| R4.htm | 44241 | 2023-02-15 16:24:20 |
| R40.htm | 112002 | 2023-02-15 16:24:20 |
| R41.htm | 94280 | 2023-02-15 16:24:20 |
| R42.htm | 75397 | 2023-02-15 16:24:20 |
| R43.htm | 17751 | 2023-02-15 16:24:20 |
| R44.htm | 57141 | 2023-02-15 16:24:20 |
| R45.htm | 28334 | 2023-02-15 16:24:20 |
| R46.htm | 101652 | 2023-02-15 16:24:20 |
| R47.htm | 19581 | 2023-02-15 16:24:20 |
| R48.htm | 107092 | 2023-02-15 16:24:20 |
| R49.htm | 91748 | 2023-02-15 16:24:20 |
| R5.htm | 132194 | 2023-02-15 16:24:20 |
| R50.htm | 51645 | 2023-02-15 16:24:20 |
| R51.htm | 90747 | 2023-02-15 16:24:20 |
| R52.htm | 50647 | 2023-02-15 16:24:20 |
| R53.htm | 35029 | 2023-02-15 16:24:20 |
| R54.htm | 17091 | 2023-02-15 16:24:20 |
| R55.htm | 7035 | 2023-02-15 16:24:20 |
| R56.htm | 56344 | 2023-02-15 16:24:20 |
| R57.htm | 18784 | 2023-02-15 16:24:20 |
| R58.htm | 15697 | 2023-02-15 16:24:20 |
| R59.htm | 90274 | 2023-02-15 16:24:20 |
| R6.htm | 8953 | 2023-02-15 16:24:20 |
| R60.htm | 37644 | 2023-02-15 16:24:20 |
| R61.htm | 25669 | 2023-02-15 16:24:20 |
| R62.htm | 9771 | 2023-02-15 16:24:20 |
| R63.htm | 21195 | 2023-02-15 16:24:20 |
| R64.htm | 18022 | 2023-02-15 16:24:20 |
| R65.htm | 17617 | 2023-02-15 16:24:20 |
| R66.htm | 21357 | 2023-02-15 16:24:20 |
| R67.htm | 38840 | 2023-02-15 16:24:20 |
| R68.htm | 70809 | 2023-02-15 16:24:20 |
| R69.htm | 13240 | 2023-02-15 16:24:20 |
| R7.htm | 124090 | 2023-02-15 16:24:20 |
| R70.htm | 8698 | 2023-02-15 16:24:20 |
| R71.htm | 68063 | 2023-02-15 16:24:20 |
| R72.htm | 15565 | 2023-02-15 16:24:20 |
| R73.htm | 48706 | 2023-02-15 16:24:20 |
| R74.htm | 25373 | 2023-02-15 16:24:20 |
| R75.htm | 10275 | 2023-02-15 16:24:20 |
| R76.htm | 12790 | 2023-02-15 16:24:20 |
| R77.htm | 45669 | 2023-02-15 16:24:20 |
| R78.htm | 23691 | 2023-02-15 16:24:20 |
| R79.htm | 7686 | 2023-02-15 16:24:20 |
| R8.htm | 131149 | 2023-02-15 16:24:20 |
| R80.htm | 9405 | 2023-02-15 16:24:20 |
| R81.htm | 52336 | 2023-02-15 16:24:20 |
| R82.htm | 13466 | 2023-02-15 16:24:20 |
| R83.htm | 9305 | 2023-02-15 16:24:20 |
| R84.htm | 16628 | 2023-02-15 16:24:20 |
| R85.htm | 13606 | 2023-02-15 16:24:20 |
| R86.htm | 21884 | 2023-02-15 16:24:20 |
| R87.htm | 33436 | 2023-02-15 16:24:20 |
| R88.htm | 43703 | 2023-02-15 16:24:20 |
| R89.htm | 25872 | 2023-02-15 16:24:20 |
| R9.htm | 112056 | 2023-02-15 16:24:20 |
| R90.htm | 21496 | 2023-02-15 16:24:20 |
| R91.htm | 15157 | 2023-02-15 16:24:20 |
| R92.htm | 20777 | 2023-02-15 16:24:20 |
| R93.htm | 6968 | 2023-02-15 16:24:20 |
| R94.htm | 7201 | 2023-02-15 16:24:20 |
| R95.htm | 29591 | 2023-02-15 16:24:20 |
| R96.htm | 28858 | 2023-02-15 16:24:20 |
| R97.htm | 72107 | 2023-02-15 16:24:20 |
| R98.htm | 27941 | 2023-02-15 16:24:20 |
| R99.htm | 35932 | 2023-02-15 16:24:20 |
| report.css | 2768 | 2023-02-15 16:24:20 |
| Show.js | 1086 | 2023-02-15 16:24:20 |