<SEC-DOCUMENT>0000950123-09-055961-index.html : 20091102
<SEC-HEADER>0000950123-09-055961.hdr.sgml : 20091102

<ACCEPTANCE-DATETIME>20091102075718

ACCESSION NUMBER:		0000950123-09-055961

CONFORMED SUBMISSION TYPE:	10-Q

PUBLIC DOCUMENT COUNT:		37

CONFORMED PERIOD OF REPORT:	20090930

FILED AS OF DATE:		20091102

DATE AS OF CHANGE:		20091102


FILER:


	COMPANY DATA:	

		COMPANY CONFORMED NAME:			MERCK & CO INC

		CENTRAL INDEX KEY:			0000064978

		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]

		IRS NUMBER:				221109110

		STATE OF INCORPORATION:			NJ

		FISCAL YEAR END:			1231



	FILING VALUES:

		FORM TYPE:		10-Q

		SEC ACT:		1934 Act

		SEC FILE NUMBER:	001-03305

		FILM NUMBER:		091149698



	BUSINESS ADDRESS:	

		STREET 1:		ONE MERCK DR

		STREET 2:		P O BOX 100

		CITY:			WHITEHOUSE STATION

		STATE:			NJ

		ZIP:			08889-0100

		BUSINESS PHONE:		9084231688



	MAIL ADDRESS:	

		STREET 1:		ONE MERCK DR

		STREET 2:		PO BOX 100 WS3AB-05

		CITY:			WHITEHOUSE STATION

		STATE:			NJ

		ZIP:			08889-0100



</SEC-HEADER>

<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>y79651e10vq.htm
<DESCRIPTION>FORM 10-Q
<TEXT>
Document 1 - file: y79651e10vq.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-31.1 <SEQUENCE>2 <FILENAME>y79651exv31w1.htm <DESCRIPTION>EX-31.1 <TEXT> Document 2 - file: y79651exv31w1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-31.2 <SEQUENCE>3 <FILENAME>y79651exv31w2.htm <DESCRIPTION>EX-31.2 <TEXT> Document 3 - file: y79651exv31w2.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-32.1 <SEQUENCE>4 <FILENAME>y79651exv32w1.htm <DESCRIPTION>EX-32.1 <TEXT> Document 4 - file: y79651exv32w1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-32.2 <SEQUENCE>5 <FILENAME>y79651exv32w2.htm <DESCRIPTION>EX-32.2 <TEXT> Document 5 - file: y79651exv32w2.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.INS <SEQUENCE>7 <FILENAME>mrk-20090930.xml <DESCRIPTION>EX-101 INSTANCE DOCUMENT <TEXT> Document 7 - file: mrk-20090930.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>8 <FILENAME>mrk-20090930.xsd <DESCRIPTION>EX-101 SCHEMA DOCUMENT <TEXT> Document 8 - file: mrk-20090930.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.CAL <SEQUENCE>9 <FILENAME>mrk-20090930_cal.xml <DESCRIPTION>EX-101 CALCULATION LINKBASE DOCUMENT <TEXT> Document 9 - file: mrk-20090930_cal.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>10 <FILENAME>mrk-20090930_lab.xml <DESCRIPTION>EX-101 LABELS LINKBASE DOCUMENT <TEXT> Document 10 - file: mrk-20090930_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>11 <FILENAME>mrk-20090930_pre.xml <DESCRIPTION>EX-101 PRESENTATION LINKBASE DOCUMENT <TEXT> Document 11 - file: mrk-20090930_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>12 <FILENAME>mrk-20090930_def.xml <DESCRIPTION>EX-101 DEFINITION LINKBASE DOCUMENT <TEXT> Document 12 - file: mrk-20090930_def.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>13 <FILENAME>R19.xml <DESCRIPTION>IDEA: Pension and Other Postretirement Benefit Plans <TEXT> Document 13 - file: R19.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>14 <FILENAME>R11.xml <DESCRIPTION>IDEA: Fair Value Measurements <TEXT> Document 14 - file: R11.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>15 <FILENAME>R10.xml <DESCRIPTION>IDEA: Collaborative Arrangements <TEXT> Document 15 - file: R10.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>16 <FILENAME>R8.xml <DESCRIPTION>IDEA: Restructuring <TEXT> Document 16 - file: R8.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>17 <FILENAME>R22.xml <DESCRIPTION>IDEA: Earnings Per Share <TEXT> Document 17 - file: R22.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>18 <FILENAME>R18.xml <DESCRIPTION>IDEA: Share Based Compensation <TEXT> Document 18 - file: R18.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>19 <FILENAME>R12.xml <DESCRIPTION>IDEA: Derivative Instruments and Hedging Activities <TEXT> Document 19 - file: R12.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>20 <FILENAME>R3.xml <DESCRIPTION>IDEA: Consolidated Balance Sheet (Unaudited) <TEXT> Document 20 - file: R3.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>21 <FILENAME>R14.xml <DESCRIPTION>IDEA: Joint Ventures and Other Equity Method Affiliates <TEXT> Document 21 - file: R14.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>22 <FILENAME>R15.xml <DESCRIPTION>IDEA: Debt and Financial Instruments <TEXT> Document 22 - file: R15.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>23 <FILENAME>R20.xml <DESCRIPTION>IDEA: Other (Income) Expense, Net <TEXT> Document 23 - file: R20.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>24 <FILENAME>R4.xml <DESCRIPTION>IDEA: Consolidated Balance Sheet (Parenthetical) (Unaudited) <TEXT> Document 24 - file: R4.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>25 <FILENAME>R16.xml <DESCRIPTION>IDEA: Contingencies <TEXT> Document 25 - file: R16.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>26 <FILENAME>R9.xml <DESCRIPTION>IDEA: Research Collaborations, Acquisitions and License Agreements <TEXT> Document 26 - file: R9.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>27 <FILENAME>R6.xml <DESCRIPTION>IDEA: Basis of Presentation <TEXT> Document 27 - file: R6.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>28 <FILENAME>R5.xml <DESCRIPTION>IDEA: Interim Consolidated Statement of Cash Flows (Unaudited) <TEXT> Document 28 - file: R5.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>29 <FILENAME>R23.xml <DESCRIPTION>IDEA: Segment Reporting <TEXT> Document 29 - file: R23.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>30 <FILENAME>defnref.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 30 - file: defnref.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>31 <FILENAME>R21.xml <DESCRIPTION>IDEA: Taxes on Income <TEXT> Document 31 - file: R21.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>32 <FILENAME>R13.xml <DESCRIPTION>IDEA: Inventories <TEXT> Document 32 - file: R13.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>33 <FILENAME>R1.xml <DESCRIPTION>IDEA: Document and Company Information <TEXT> Document 33 - file: R1.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>34 <FILENAME>R2.xml <DESCRIPTION>IDEA: Interim Consolidated Statement of Income (Unaudited) <TEXT> Document 34 - file: R2.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>35 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 35 - file: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>36 <FILENAME>Financial_Report.xls <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 36 - file: Financial_Report.xls
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>37 <FILENAME>R7.xml <DESCRIPTION>IDEA: Merger Agreement <TEXT> Document 37 - file: R7.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>38 <FILENAME>R17.xml <DESCRIPTION>IDEA: Stockholders Equity <TEXT> Document 38 - file: R17.xml
</DOCUMENT> </SEC-DOCUMENT>