    <SEC-DOCUMENT>0001020569-20-000211-index.html : 20201105
    <SEC-HEADER>0001020569-20-000211.hdr.sgml : 20201105
    <ACCEPTANCE-DATETIME>20201105060804
    ACCESSION NUMBER:		0001020569-20-000211
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		53
    CONFORMED PERIOD OF REPORT:	20201105
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20201105
    DATE AS OF CHANGE:		20201105

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			IRON MOUNTAIN INC
    		CENTRAL INDEX KEY:			0001020569
    		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
    		IRS NUMBER:				232588479
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13045
    		FILM NUMBER:		201288484

    	BUSINESS ADDRESS:
    		STREET 1:		ONE FEDERAL STREET
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		617-535-4781

    	MAIL ADDRESS:
    		STREET 1:		ONE FEDERAL STREET
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	IRON MOUNTAIN INC/PA
    		DATE OF NAME CHANGE:	20000201

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	PIERCE LEAHY CORP
    		DATE OF NAME CHANGE:	19960807
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>irm-20201105.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: irm-20201105.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>q32020earningspressrel.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: q32020earningspressrel.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>q32020earningscallslides.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: q32020earningscallslides.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>srpq32020final.htm
    <DESCRIPTION>EX-99.3
    <TEXT>
    Document 4 - file: srpq32020final.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>5
    <FILENAME>irm-20201105.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 5 - file: irm-20201105.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.CAL
    <SEQUENCE>6
    <FILENAME>irm-20201105_cal.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: irm-20201105_cal.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>7
    <FILENAME>irm-20201105_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 7 - file: irm-20201105_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>8
    <FILENAME>irm-20201105_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 8 - file: irm-20201105_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>9
    <FILENAME>irm-20201105_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 9 - file: irm-20201105_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>q32020earningscallslides001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: q32020earningscallslides001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>q32020earningscallslides002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: q32020earningscallslides002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>q32020earningscallslides003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: q32020earningscallslides003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>q32020earningscallslides004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: q32020earningscallslides004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>q32020earningscallslides005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: q32020earningscallslides005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>q32020earningscallslides006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: q32020earningscallslides006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>q32020earningscallslides007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: q32020earningscallslides007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>q32020earningscallslides008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: q32020earningscallslides008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>q32020earningscallslides009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: q32020earningscallslides009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>q42018earningspressre_imaga.jpg
    <TEXT>
    Document 19 - file: q42018earningspressre_imaga.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>srpq32020final001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: srpq32020final001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>srpq32020final002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: srpq32020final002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>srpq32020final003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: srpq32020final003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>srpq32020final004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: srpq32020final004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>srpq32020final005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: srpq32020final005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>srpq32020final006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: srpq32020final006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>srpq32020final007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: srpq32020final007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>srpq32020final008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: srpq32020final008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>srpq32020final009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: srpq32020final009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>srpq32020final010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: srpq32020final010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>srpq32020final011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: srpq32020final011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>srpq32020final012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 31 - file: srpq32020final012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>srpq32020final013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 32 - file: srpq32020final013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>srpq32020final014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 33 - file: srpq32020final014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>srpq32020final015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 34 - file: srpq32020final015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>srpq32020final016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 35 - file: srpq32020final016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>srpq32020final017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 36 - file: srpq32020final017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>srpq32020final018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 37 - file: srpq32020final018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>srpq32020final019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 38 - file: srpq32020final019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>srpq32020final020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 39 - file: srpq32020final020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>srpq32020final021.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 40 - file: srpq32020final021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>srpq32020final022.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 41 - file: srpq32020final022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>srpq32020final023.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 42 - file: srpq32020final023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>srpq32020final024.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 43 - file: srpq32020final024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>44
    <FILENAME>srpq32020final025.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 44 - file: srpq32020final025.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>45
    <FILENAME>srpq32020final026.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 45 - file: srpq32020final026.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>46
    <FILENAME>irm-20201105_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 46 - file: irm-20201105_htm.html

    Document 46 - RAW XML: irm-20201105_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>47
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 47 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>48
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 48 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>49
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 49 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>50
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 50 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>51
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 51 - file: FilingSummary.html

    Document 51 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>53
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 53 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>54
    <FILENAME>0001020569-20-000211-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 54 - file: 0001020569-20-000211-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>