v3.26.1
Document and Entity Information
 3 Months Ended
Mar. 31, 2026
$ / shares
shares
Document Information  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Mar. 31, 2026
Document Transition Report false
Entity Registrant Name SIMON PROPERTY GROUP, INC.
Entity Incorporation, State or Country Code IN
Securities Act File Number 001-14469
Entity Tax Identification Number 04-6268599
Entity Address, Address Line One 225 West Washington Street
Entity Address, City or Town Indianapolis
Entity Address, State or Province IN
Entity Address, Postal Zip Code 46204
City Area Code 317
Local Phone Number 636-1600
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Central Index Key 0001063761
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q1
Amendment Flag false
Common stock  
Document Information  
Title of 12(b) Security Common stock, $0.0001 par value
Trading Symbol SPG
Security Exchange Name NYSE
Entity Common Stock, Shares Outstanding 324,281,912
Entity Listing, Par Value Per Share | $ / shares $ 0.0001
Class B common stock  
Document Information  
Entity Common Stock, Shares Outstanding 8,000
Entity Listing, Par Value Per Share | $ / shares $ 0.0001
Series J Redeemable Preferred Stock  
Document Information  
Title of 12(b) Security 83/8% Series J Cumulative Redeemable Preferred Stock, $0.0001 par value
Trading Symbol SPGJ
Security Exchange Name NYSE
Simon Property Group, L.P.  
Document Information  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Mar. 31, 2026
Document Transition Report false
Entity Registrant Name SIMON PROPERTY GROUP, L.P.
Entity Incorporation, State or Country Code IN
Securities Act File Number 001-36110
Entity Tax Identification Number 34-1755769
Entity Address, Address Line One 225 West Washington Street
Entity Address, City or Town Indianapolis
Entity Address, State or Province IN
Entity Address, Postal Zip Code 46204
City Area Code 317
Local Phone Number 636-1600
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 0
Entity Central Index Key 0001022344
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q1
Amendment Flag false