Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000875045-16-000042-index-headers.html | 2016-02-03 16:25:52 | |
| 0000875045-16-000042-index.html | 2016-02-03 16:25:52 | |
| 0000875045-16-000042.txt | 2016-02-03 16:25:52 | |
 0000875045-16-000042-xbrl.zip | 537220 | 2016-02-03 16:25:52 |
 alprolix.jpg | 8849 | 2016-02-03 16:25:52 |
 alprolixchart.jpg | 30626 | 2016-02-03 16:25:52 |
 amortizationchart.jpg | 20497 | 2016-02-03 16:25:52 |
 avonex.jpg | 5670 | 2016-02-03 16:25:52 |
 avonexchart.jpg | 38126 | 2016-02-03 16:25:52 |
| biib-20151231.xml | 4829683 | 2016-02-03 16:25:52 |
| biib-20151231.xsd | 129387 | 2016-02-03 16:25:52 |
| biib-20151231x10k.htm | 3949919 | 2016-02-03 16:25:52 |
| biib-20151231xex1023.htm | 390524 | 2016-02-03 16:25:52 |
| biib-20151231xex1024.htm | 261538 | 2016-02-03 16:25:52 |
| biib-20151231xex1037.htm | 72684 | 2016-02-03 16:25:52 |
| biib-20151231xex1041.htm | 12977 | 2016-02-03 16:25:52 |
| biib-20151231xex1042.htm | 140658 | 2016-02-03 16:25:52 |
| biib-20151231xex21.htm | 57104 | 2016-02-03 16:25:52 |
| biib-20151231xex23.htm | 2851 | 2016-02-03 16:25:52 |
| biib-20151231xex311.htm | 13911 | 2016-02-03 16:25:52 |
| biib-20151231xex312.htm | 14260 | 2016-02-03 16:25:52 |
| biib-20151231xex321.htm | 6620 | 2016-02-03 16:25:52 |
| biib-20151231_cal.xml | 147061 | 2016-02-03 16:25:52 |
| biib-20151231_def.xml | 629117 | 2016-02-03 16:25:52 |
| biib-20151231_lab.xml | 1583410 | 2016-02-03 16:25:52 |
| biib-20151231_pre.xml | 980484 | 2016-02-03 16:25:52 |
 biogenlogostandard.jpg | 95885 | 2016-02-03 16:25:52 |
 blooddrop.jpg | 640450 | 2016-02-03 16:25:52 |
 collabprofitsharingchart.jpg | 17207 | 2016-02-03 16:25:52 |
 costofsaleschart.jpg | 32767 | 2016-02-03 16:25:52 |
 eloctate.jpg | 10055 | 2016-02-03 16:25:52 |
 eloctatechart.jpg | 28076 | 2016-02-03 16:25:52 |
 environsustainability.jpg | 24959 | 2016-02-03 16:25:52 |
 equitinlossofinvesteechart.jpg | 21720 | 2016-02-03 16:25:52 |
 fampyra.jpg | 2031 | 2016-02-03 16:25:52 |
| FilingSummary.xml | 74170 | 2016-02-03 16:25:52 |
 financialhighlightschart.jpg | 39287 | 2016-02-03 16:25:52 |
| Financial_Report.xlsx | 201725 | 2016-02-03 16:25:52 |
 fumaderm.jpg | 3140 | 2016-02-03 16:25:52 |
 gainlossfairvaluechart.jpg | 18732 | 2016-02-03 16:25:52 |
 gazyva.jpg | 21759 | 2016-02-03 16:25:52 |
 geographicsaleschart.jpg | 30210 | 2016-02-03 16:25:52 |
 incometaxchart.jpg | 34948 | 2016-02-03 16:25:52 |
 noncontrollinginterestchart.jpg | 18306 | 2016-02-03 16:25:52 |
 otherincomeexpensechart.jpg | 19955 | 2016-02-03 16:25:52 |
 otherrevenueschart.jpg | 32452 | 2016-02-03 16:25:52 |
 plegridy.jpg | 5127 | 2016-02-03 16:25:52 |
 plegridychart.jpg | 29214 | 2016-02-03 16:25:52 |
 principalproductschart.jpg | 61249 | 2016-02-03 16:25:52 |
| R1.htm | 28389 | 2016-02-03 16:25:52 |
| R10.htm | 26278 | 2016-02-03 16:25:52 |
| R100.htm | 12637 | 2016-02-03 16:25:52 |
| R101.htm | 91010 | 2016-02-03 16:25:52 |
| R102.htm | 38667 | 2016-02-03 16:25:52 |
| R103.htm | 27559 | 2016-02-03 16:25:52 |
| R104.htm | 25591 | 2016-02-03 16:25:52 |
| R105.htm | 15863 | 2016-02-03 16:25:52 |
| R106.htm | 57250 | 2016-02-03 16:25:52 |
| R107.htm | 56238 | 2016-02-03 16:25:52 |
| R108.htm | 60849 | 2016-02-03 16:25:52 |
| R109.htm | 27959 | 2016-02-03 16:25:52 |
| R11.htm | 95006 | 2016-02-03 16:25:52 |
| R110.htm | 40862 | 2016-02-03 16:25:52 |
| R111.htm | 34165 | 2016-02-03 16:25:52 |
| R112.htm | 7442 | 2016-02-03 16:25:52 |
| R113.htm | 7472 | 2016-02-03 16:25:52 |
| R114.htm | 356936 | 2016-02-03 16:25:52 |
| R115.htm | 5445 | 2016-02-03 16:25:52 |
| R116.htm | 48237 | 2016-02-03 16:25:52 |
| R117.htm | 20966 | 2016-02-03 16:25:52 |
| R118.htm | 75410 | 2016-02-03 16:25:52 |
| R119.htm | 30023 | 2016-02-03 16:25:52 |
| R12.htm | 27685 | 2016-02-03 16:25:52 |
| R120.htm | 70593 | 2016-02-03 16:25:52 |
| R121.htm | 41155 | 2016-02-03 16:25:52 |
| R122.htm | 18125 | 2016-02-03 16:25:52 |
| R123.htm | 36090 | 2016-02-03 16:25:52 |
| R124.htm | 31408 | 2016-02-03 16:25:52 |
| R13.htm | 81949 | 2016-02-03 16:25:52 |
| R14.htm | 151438 | 2016-02-03 16:25:52 |
| R15.htm | 133432 | 2016-02-03 16:25:52 |
| R16.htm | 74883 | 2016-02-03 16:25:52 |
| R17.htm | 38631 | 2016-02-03 16:25:52 |
| R18.htm | 59066 | 2016-02-03 16:25:52 |
| R19.htm | 25661 | 2016-02-03 16:25:52 |
| R2.htm | 70032 | 2016-02-03 16:25:52 |
| R20.htm | 117067 | 2016-02-03 16:25:52 |
| R21.htm | 32809 | 2016-02-03 16:25:52 |
| R22.htm | 177102 | 2016-02-03 16:25:52 |
| R23.htm | 140731 | 2016-02-03 16:25:52 |
| R24.htm | 75004 | 2016-02-03 16:25:52 |
| R25.htm | 15837 | 2016-02-03 16:25:52 |
| R26.htm | 161599 | 2016-02-03 16:25:52 |
| R27.htm | 18817 | 2016-02-03 16:25:52 |
| R28.htm | 65556 | 2016-02-03 16:25:52 |
| R29.htm | 6762 | 2016-02-03 16:25:52 |
| R3.htm | 39803 | 2016-02-03 16:25:52 |
| R30.htm | 17534 | 2016-02-03 16:25:52 |
| R31.htm | 195176 | 2016-02-03 16:25:52 |
| R32.htm | 144285 | 2016-02-03 16:25:52 |
| R33.htm | 175760 | 2016-02-03 16:25:52 |
| R34.htm | 9041 | 2016-02-03 16:25:52 |
| R35.htm | 18423 | 2016-02-03 16:25:52 |
| R36.htm | 23270 | 2016-02-03 16:25:52 |
| R37.htm | 94845 | 2016-02-03 16:25:52 |
| R38.htm | 22666 | 2016-02-03 16:25:52 |
| R39.htm | 67951 | 2016-02-03 16:25:52 |
| R4.htm | 87277 | 2016-02-03 16:25:52 |
| R40.htm | 137303 | 2016-02-03 16:25:52 |
| R41.htm | 133656 | 2016-02-03 16:25:52 |
| R42.htm | 58952 | 2016-02-03 16:25:52 |
| R43.htm | 31541 | 2016-02-03 16:25:52 |
| R44.htm | 40446 | 2016-02-03 16:25:52 |
| R45.htm | 14248 | 2016-02-03 16:25:52 |
| R46.htm | 115670 | 2016-02-03 16:25:52 |
| R47.htm | 29699 | 2016-02-03 16:25:52 |
| R48.htm | 154346 | 2016-02-03 16:25:52 |
| R49.htm | 124122 | 2016-02-03 16:25:52 |
| R5.htm | 8926 | 2016-02-03 16:25:52 |
| R50.htm | 67080 | 2016-02-03 16:25:52 |
| R51.htm | 72255 | 2016-02-03 16:25:52 |
| R52.htm | 46092 | 2016-02-03 16:25:52 |
| R53.htm | 185559 | 2016-02-03 16:25:52 |
| R54.htm | 142961 | 2016-02-03 16:25:52 |
| R55.htm | 48335 | 2016-02-03 16:25:52 |
| R56.htm | 12292 | 2016-02-03 16:25:52 |
| R57.htm | 19217 | 2016-02-03 16:25:52 |
| R58.htm | 54086 | 2016-02-03 16:25:52 |
| R59.htm | 21411 | 2016-02-03 16:25:52 |
| R6.htm | 83085 | 2016-02-03 16:25:52 |
| R60.htm | 20742 | 2016-02-03 16:25:52 |
| R61.htm | 25720 | 2016-02-03 16:25:52 |
| R62.htm | 7048 | 2016-02-03 16:25:52 |
| R63.htm | 16036 | 2016-02-03 16:25:52 |
| R64.htm | 12475 | 2016-02-03 16:25:52 |
| R65.htm | 79542 | 2016-02-03 16:25:52 |
| R66.htm | 19740 | 2016-02-03 16:25:52 |
| R67.htm | 58891 | 2016-02-03 16:25:52 |
| R68.htm | 19105 | 2016-02-03 16:25:52 |
| R69.htm | 14874 | 2016-02-03 16:25:52 |
| R7.htm | 76455 | 2016-02-03 16:25:52 |
| R70.htm | 70652 | 2016-02-03 16:25:52 |
| R71.htm | 13148 | 2016-02-03 16:25:52 |
| R72.htm | 33308 | 2016-02-03 16:25:52 |
| R73.htm | 22688 | 2016-02-03 16:25:52 |
| R74.htm | 9549 | 2016-02-03 16:25:52 |
| R75.htm | 8119 | 2016-02-03 16:25:52 |
| R76.htm | 5687 | 2016-02-03 16:25:52 |
| R77.htm | 37796 | 2016-02-03 16:25:52 |
| R78.htm | 13356 | 2016-02-03 16:25:52 |
| R79.htm | 35262 | 2016-02-03 16:25:52 |
| R8.htm | 103983 | 2016-02-03 16:25:52 |
| R80.htm | 24686 | 2016-02-03 16:25:52 |
| R81.htm | 11149 | 2016-02-03 16:25:52 |
| R82.htm | 30436 | 2016-02-03 16:25:52 |
| R83.htm | 30753 | 2016-02-03 16:25:52 |
| R84.htm | 19125 | 2016-02-03 16:25:52 |
| R85.htm | 74067 | 2016-02-03 16:25:52 |
| R86.htm | 9683 | 2016-02-03 16:25:52 |
| R87.htm | 22622 | 2016-02-03 16:25:52 |
| R88.htm | 31065 | 2016-02-03 16:25:52 |
| R89.htm | 28766 | 2016-02-03 16:25:52 |
| R9.htm | 29924 | 2016-02-03 16:25:52 |
| R90.htm | 36588 | 2016-02-03 16:25:52 |
| R91.htm | 22984 | 2016-02-03 16:25:52 |
| R92.htm | 25181 | 2016-02-03 16:25:52 |
| R93.htm | 20581 | 2016-02-03 16:25:52 |
| R94.htm | 7203 | 2016-02-03 16:25:52 |
| R95.htm | 25802 | 2016-02-03 16:25:52 |
| R96.htm | 23583 | 2016-02-03 16:25:52 |
| R97.htm | 13614 | 2016-02-03 16:25:52 |
| R98.htm | 13899 | 2016-02-03 16:25:52 |
| R99.htm | 25626 | 2016-02-03 16:25:52 |
 rdpiechart2013.jpg | 36313 | 2016-02-03 16:25:52 |
 rdpiechart2014.jpg | 36389 | 2016-02-03 16:25:52 |
 rdpiechart2015.jpg | 37005 | 2016-02-03 16:25:52 |
| report.css | 2768 | 2016-02-03 16:25:52 |
 researchanddevelopment.jpg | 20471 | 2016-02-03 16:25:52 |
 researchanddevelopmentchart.jpg | 71053 | 2016-02-03 16:25:52 |
 reserveschart.jpg | 46965 | 2016-02-03 16:25:52 |
 restructuringchargeschart.jpg | 17093 | 2016-02-03 16:25:52 |
 rituxan.jpg | 9985 | 2016-02-03 16:25:52 |
 sellinggeneraladminchart.jpg | 20842 | 2016-02-03 16:25:52 |
| Show.js | 1411 | 2016-02-03 16:25:52 |
 stockperformancechart.jpg | 61653 | 2016-02-03 16:25:52 |
 tecfidera.jpg | 7384 | 2016-02-03 16:25:52 |
 tecfiderachart.jpg | 35765 | 2016-02-03 16:25:52 |
 tysabri.jpg | 6359 | 2016-02-03 16:25:52 |
 tysabrichart.jpg | 36917 | 2016-02-03 16:25:52 |
 unconsoljointbusinesschart.jpg | 49111 | 2016-02-03 16:25:52 |