Per Share and Per Unit Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Per Share And Per Unit Data
Net Income attributable to Common Stockholders - Basic	$ 673,786	$ 539,038	$ 496,743	$ 426,630	$ 503,241	$ 679,936	$ 617,257	$ 445,860	$ 2,136,198	$ 2,246,294	$ 1,109,227
Net Income attributable to Common Stockholders - Diluted									$ 2,136,198	$ 2,246,294	$ 1,109,227
Weighted Average Shares Outstanding - Basic	326,953,791	327,286,003	328,444,627	328,606,352	328,619,248	328,619,163	328,594,136	328,514,497	327,816,695	328,587,137	308,737,625
Weighted Average Shares Outstanding - Diluted	326,953,791	327,286,003	328,444,627	328,606,352	328,619,248	328,619,163	328,594,136	328,514,497	327,816,695	328,587,137	308,737,625
Dividends
Total dividends/distributions paid per common share/unit									$ 6.90	$ 5.85	$ 6.00
Percent taxable as ordinary income									98.60%	93.10%	97.40%
Percent taxable as long-term capital gains									1.40%	6.90%	2.60%
Total percentage of dividends paid									100.00%	100.00%	100.00%
Simon Property Group, L.P.
Per Share And Per Unit Data
Net Income attributable to Common Stockholders - Basic	$ 771,195	$ 616,918	$ 568,289	$ 487,993	$ 575,596	$ 777,740	$ 706,087	$ 510,085	$ 2,444,395	$ 2,569,508	$ 1,276,450
Net Income attributable to Common Stockholders - Diluted									$ 2,444,395	$ 2,569,508	$ 1,276,450
Weighted Average Shares Outstanding - Basic	374,257,136	374,589,771	375,754,363	375,870,183	375,872,212	375,882,318	375,875,290	375,836,653	375,111,997	375,866,759	355,281,882
Weighted Average Shares Outstanding - Diluted	374,257,136	374,589,771	375,754,363	375,870,183	375,872,212	375,882,318	375,875,290	375,836,653	375,111,997	375,866,759	355,281,882