Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.20.2
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2020
Oct. 27, 2020
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q3  
Trading Symbol LSI  
Entity Registrant Name LIFE STORAGE, INC.  
Entity Central Index Key 0000944314  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   48,597,483
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Title of 12(b) Security Common Stock, $.01 par value  
Security Exchange Name NYSE  
Entity File Number 1-13820  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 16-1194043  
Entity Address, Address Line One 6467 Main Street  
Entity Address, City or Town Williamsville  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 14221  
City Area Code 716  
Local Phone Number 633-1850  
Document Quarterly Report true  
Document Transition Report false  
Life Storage LP [Member]    
Document Information [Line Items]    
Entity Registrant Name LIFE STORAGE LP  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   48,597,483
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity File Number 0-24071  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 16-1481551  
Entity Address, Address Line One 6467 Main Street  
Entity Address, City or Town Williamsville  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 14221  
City Area Code 716  
Local Phone Number 633-1850  
Document Quarterly Report true  
Document Transition Report false