SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* ALEXANDER SUSAN H (Last) (First) (Middle) BIOGEN IDEC INC. 14 CAMBRIDGE CENTER (Street) CAMBRIDGE MA 02142 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 01/30/2006	3. Issuer Name and Ticker or Trading Symbol BIOGEN IDEC INC [ BIIB ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) EVP, General Counsel	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities are beneficially owned.

	By: Benjamin S. Harshbarger; For: Susan H. Alexander	02/01/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS




	Know all by these presents, that the undersigned's hereby makes,

constitutes and appoints Benjamin S. Harshbarger, Daniel S. Char, Jo Ann

Taormina and Kevin M. Foley as the undersigned's true and lawful

attorney-in-fact, with full power and authority as hereinafter described
on
behalf of and in the name, place and stead of the undersigned to:



(1)	prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5

(including any amendments thereto) with respect to the securities of
Biogen
Idec Inc., a Delaware corporation (the "Company"), with the United
States
Securities and Exchange Commission, any national securities
exchanges and
the Company, as considered necessary or advisable under
Section 16(a) of
the Securities Exchange Act of 1934 and the rules and
regulations
promulgated thereunder, as amended from time to time (the
"Exchange Act");


(2)	seek or obtain, as the undersigned's
representative and on the
undersigned's behalf, information on
transactions in the Company's
securities from any third party, including
brokers, employee benefit plan
administrators and trustees, and the
undersigned hereby authorizes any such
person to release any such
information to the undersigned and approves and
ratifies any such release
of information; and

(3)	perform any and all
other acts which in
the discretion of such attorney-in-fact are necessary
or desirable for
and on behalf of the undersigned in connection with the
foregoing.


The undersigned acknowledges that:

(1)	this Power of
Attorney
authorizes, but does not require, such attorney-in-fact to act in
their
discretion on information provided to such attorney-in-fact without

independent verification of such information;

(2)	any documents

prepared and/or executed by such attorney-in-fact on behalf of the

undersigned pursuant to this Power of Attorney will be in such form and

will contain such information and disclosure as such attorney-in-fact, in

his or her discretion, deems necessary or desirable;

(3)	neither
the
Company nor such attorney-in-fact assumes (i) any liability for the

undersigned's responsibility to comply with the requirement of the
Exchange
Act, (ii) any liability of the undersigned for any failure to
comply with
such requirements, or (iii) any obligation or liability of
the undersigned
for profit disgorgement under Section 16(b) of the
Exchange Act; and


(4)	this Power of Attorney does not relieve the
undersigned from
responsibility for compliance with the undersigned's
obligations under the
Exchange Act, including without limitation the
reporting requirements under
Section 16 of the Exchange Act.

	The
undersigned hereby gives and
grants the foregoing attorney-in-fact full
power and authority to do and
perform all and every act and thing
whatsoever requisite, necessary or
appropriate to be done in and about
the foregoing matters as fully to all
intents and purposes as the
undersigned might or could do if present,
hereby ratifying all that such
attorney-in-fact of, for and on behalf of
the undersigned, shall lawfully
do or cause to be done by virtue of this
Limited Power of Attorney.


	This Power of Attorney shall remain in
full force and effect until
revoked by the undersigned in a signed writing
delivered to such
attorney-in-fact.

	IN WITNESS WHEREOF, the
undersigned has caused
this Power of Attorney to be executed as of this
30th day of January,
2006.



				/s/ Susan
H. Alexander

Susan H. Alexander