Per Share and Per Unit Data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Per Share And Per Unit Data
Net Income attributable to Common Stockholders - Basic	$ 539,038	$ 679,936	$ 1,462,412	$ 1,743,053
Net Income attributable to Common Stockholders - Diluted	$ 539,038	$ 679,936	$ 1,462,412	$ 1,743,053
Weighted Average Shares Outstanding - Basic	327,286,003	328,619,163	328,107,491	328,576,315
Weighted Average Shares Outstanding - Diluted	327,286,003	328,619,163	328,107,491	328,576,315
Simon Property Group, L.P.
Per Share And Per Unit Data
Net Income attributable to Common Stockholders - Basic	$ 616,918	$ 777,740	$ 1,673,200	$ 1,993,913
Net Income attributable to Common Stockholders - Diluted	$ 616,918	$ 777,740	$ 1,673,200	$ 1,993,913
Weighted Average Shares Outstanding - Basic	374,589,771	375,882,318	375,400,082	375,864,921
Weighted Average Shares Outstanding - Diluted	374,589,771	375,882,318	375,400,082	375,864,921