    <SEC-DOCUMENT>0000875045-16-000074-index.html : 20161212
    <SEC-HEADER>0000875045-16-000074.hdr.sgml : 20161212
    <ACCEPTANCE-DATETIME>20161209174908
    ACCESSION NUMBER:		0000875045-16-000074
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		42
    CONFORMED PERIOD OF REPORT:	20161209
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20161212
    DATE AS OF CHANGE:		20161209

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BIOGEN INC.
    		CENTRAL INDEX KEY:			0000875045
    		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
    		IRS NUMBER:				330112644
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-19311
    		FILM NUMBER:		162044900

    	BUSINESS ADDRESS:
    		STREET 1:		225 BINNEY STREET
    		CITY:			CAMBRIDGE
    		STATE:			MA
    		ZIP:			02142
    		BUSINESS PHONE:		7814642000

    	MAIL ADDRESS:
    		STREET 1:		225 BINNEY STREET
    		CITY:			CAMBRIDGE
    		STATE:			MA
    		ZIP:			02142

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BIOGEN IDEC INC.
    		DATE OF NAME CHANGE:	20070427

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BIOGEN IDEC INC
    		DATE OF NAME CHANGE:	20031112

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	IDEC PHARMACEUTICALS CORP / DE
    		DATE OF NAME CHANGE:	19970530
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    <SEQUENCE>1
    <FILENAME>december920168-k.htm
    <DESCRIPTION>8-K
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    Document 1 - file: december920168-k.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
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    <FILENAME>titration1.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: titration1.htm

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    <FILENAME>lte2.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 3 - file: lte2.htm

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    <FILENAME>biogenlogostandarda02.jpg
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    Document 4 - file: biogenlogostandarda02.jpg

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    <FILENAME>lte2001.jpg
    <TEXT>
    Document 5 - file: lte2001.jpg

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    <SEQUENCE>6
    <FILENAME>lte2002.jpg
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    Document 6 - file: lte2002.jpg

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    <SEQUENCE>7
    <FILENAME>lte2003.jpg
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    Document 7 - file: lte2003.jpg

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    <SEQUENCE>8
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    Document 8 - file: lte2004.jpg

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    Document 9 - file: lte2005.jpg

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    Document 10 - file: lte2006.jpg

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    <SEQUENCE>11
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    Document 11 - file: lte2007.jpg

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    <SEQUENCE>12
    <FILENAME>lte2008.jpg
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    Document 12 - file: lte2008.jpg

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    <SEQUENCE>13
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    <TEXT>
    Document 13 - file: lte2009.jpg

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    <SEQUENCE>14
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    <TEXT>
    Document 14 - file: lte2010.jpg

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    <SEQUENCE>15
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    Document 15 - file: lte2011.jpg

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    <SEQUENCE>16
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    Document 16 - file: lte2012.jpg

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    <SEQUENCE>17
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    Document 17 - file: lte2013.jpg

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    <SEQUENCE>18
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    Document 18 - file: lte2014.jpg

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    <SEQUENCE>19
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    <TEXT>
    Document 19 - file: lte2015.jpg

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    <SEQUENCE>20
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    Document 20 - file: lte2016.jpg

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    <SEQUENCE>21
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    Document 21 - file: lte2017.jpg

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    Document 22 - file: lte2018.jpg

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    <SEQUENCE>23
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    Document 23 - file: titration1001.jpg

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    <SEQUENCE>24
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    Document 24 - file: titration1002.jpg

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    <SEQUENCE>25
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    Document 25 - file: titration1003.jpg

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    <SEQUENCE>26
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    Document 26 - file: titration1004.jpg

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    <SEQUENCE>27
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    Document 27 - file: titration1005.jpg

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    <SEQUENCE>28
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    Document 28 - file: titration1006.jpg

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    Document 29 - file: titration1007.jpg

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    Document 30 - file: titration1008.jpg

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    Document 31 - file: titration1009.jpg

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    <SEQUENCE>32
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    Document 32 - file: titration1010.jpg

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    <SEQUENCE>33
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    Document 33 - file: titration1011.jpg

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    Document 34 - file: titration1012.jpg

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    <SEQUENCE>35
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    Document 35 - file: titration1013.jpg

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    <SEQUENCE>36
    <FILENAME>titration1014.jpg
    <TEXT>
    Document 36 - file: titration1014.jpg

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    <SEQUENCE>37
    <FILENAME>titration1015.jpg
    <TEXT>
    Document 37 - file: titration1015.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>titration1016.jpg
    <TEXT>
    Document 38 - file: titration1016.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>titration1017.jpg
    <TEXT>
    Document 39 - file: titration1017.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>titration1018.jpg
    <TEXT>
    Document 40 - file: titration1018.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>titration1019.jpg
    <TEXT>
    Document 41 - file: titration1019.jpg

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    <SEQUENCE>42
    <FILENAME>titration1020.jpg
    <TEXT>
    Document 42 - file: titration1020.jpg

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