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Cover
Nov. 03, 2021
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Nov. 03, 2021
Entity File Number 001-34907
Entity Registrant Name STAG INDUSTRIAL, INC.
Entity Central Index Key 0001479094
Entity Tax Identification Number 27-3099608
Entity Incorporation, State or Country Code MD
Entity Address, Address Line One One Federal Street
Entity Address, Address Line Two 23rd Floor
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 574-4777
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol STAG
Security Exchange Name NYSE
Entity Emerging Growth Company false