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Equity - Common Stock and Unit Issuances and Repurchases (Details)
$ / shares in Units, $ in Millions
12 Months Ended
May 16, 2022
USD ($)
Dec. 29, 2020
shares
Nov. 18, 2020
USD ($)
$ / shares
shares
Feb. 11, 2019
USD ($)
Dec. 31, 2022
USD ($)
Vote
item
director
person
$ / shares
shares
Dec. 31, 2021
USD ($)
person
shares
Dec. 31, 2020
$ / shares
shares
Equity              
Minimum number of additional classes or series of common stock that the Board is authorized to reclassify from excess common stock | item         1    
Exchange of limited partner units, (in shares)         2,680 58,571 293,204
Redemption of units         14,740 15,705 116,658
Public offering of common stock, shares     22,137,500       22,137,500
Proceeds from issuance of common stock | $     $ 1,600.0        
Share Price | $ / shares     $ 72.50        
Common stock authorized for repurchase | $ $ 2,000.0     $ 2,000.0      
Period common stock is authorized to repurchase 2 years     2 years      
Shares repurchased (in shares)         1,830,022   1,245,654
Average share price repurchased (in dollars per share) | $ / shares         $ 98.57   $ 122.50
Simon Property Group, L.P.              
Equity              
Redemption of units         14,740 15,705 116,658
Public offering of common stock, shares             22,137,500
TRG              
Equity              
Ownership interest acquired (as a percent)   80.00%          
TRG | Simon Property Group, L.P.              
Equity              
Number of units issued in connection with acquisition   955,705          
Class B common stock              
Equity              
Common Stock, Shares, Outstanding         8,000 8,000  
Number of voting trusts which are subject to outstanding shares common stock | Vote         2    
Common Stock.              
Equity              
Number of votes entitled per share to holders of common stock | Vote         1    
Limited Partners | Simon Property Group, L.P.              
Equity              
Exchange of limited partner units, (in shares)         2,680 58,571  
Redemption of units         14,740 15,705  
Number of limited partners whose common stock redeemed | person         3 7  
Value of units redeemed | $         $ 1.9 $ 2.2  
Number of limited partners who received common stock | person         2 7  
Maximum | Class B common stock              
Equity              
Number of members of board of directors elected under entitlement of right | director         4