Per Share and Per Unit Data (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Per Share And Per Unit Data
Net Income attributable to Common Stockholders - Basic	$ 486,343	$ 496,743	$ 938,170	$ 923,374
Net Income attributable to Common Stockholders - Diluted	$ 486,343	$ 496,743	$ 938,170	$ 923,374
Weighted Average Shares Outstanding - Basic	327,189,785	328,444,627	327,072,690	328,525,043
Weighted Average Shares Outstanding - Diluted	327,189,785	328,444,627	327,072,690	328,525,043
Simon Property Group, L.P.
Per Share And Per Unit Data
Net Income attributable to Common Stockholders - Basic	$ 556,556	$ 568,289	$ 1,073,736	$ 1,056,282
Net Income attributable to Common Stockholders - Diluted	$ 556,556	$ 568,289	$ 1,073,736	$ 1,056,282
Weighted Average Shares Outstanding - Basic	374,423,175	375,754,363	374,334,880	375,811,953
Weighted Average Shares Outstanding - Diluted	374,423,175	375,754,363	374,334,880	375,811,953