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Cover Document
Dec. 07, 2021
Cover [Abstract]  
Document Type 8-K
Document Period End Date Dec. 07, 2021
Entity Registrant Name IRON MOUNTAIN INC
Entity Incorporation, State or Country Code DE
Entity File Number 1-13045
Entity Tax Identification Number 23-2588479
Entity Address, Address Line One One Federal Street
Entity Address, City or Town Boston
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02110
City Area Code 617
Local Phone Number 535-4766
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Central Index Key 0001020569
Amendment Flag false
Entity Emerging Growth Company false