Equity - Shares or Units Activity (Details) $ / shares in Units, $ in Thousands			3 Months Ended					9 Months Ended
	Nov. 01, 2022 $ / shares	May 09, 2022 USD ($)	Sep. 30, 2022 $ / shares shares	Jun. 30, 2022 shares	Mar. 31, 2022 shares	Jun. 30, 2021 shares	Mar. 31, 2021 shares	Sep. 30, 2022 USD ($) item $ / shares shares	Sep. 30, 2021 $ / shares
Equity
Redemption of units | shares				12,930	1,000	170	316
Common stock authorized for repurchase | $		$ 2,000,000
Period common stock is authorized to repurchase		2 years
Shares repurchased (in shares) | shares			405,926	1,424,096				1,830,022
Average share price repurchased (in dollars per share) | $ / shares								$ 98.57
Common stock dividends paid (in dollars per share) | $ / shares			$ 1.75					5.10	$ 5.50
Subsequent Event
Equity
Dividends declared per common share (in dollars per share) | $ / shares	$ 1.80
Simon Property Group, L.P.
Equity
Redemption of units | shares				12,930	1,000	170	316
Distributions paid per unit (in dollars per unit) | $ / shares			$ 1.75					$ 5.10	$ 5.50
Simon Property Group, L.P. | Subsequent Event
Equity
Distribution declared per unit (in dollars per share) | $ / shares	$ 1.80
Simon Property Group, L.P. | Limited Partners
Equity
Units issued | shares								2,680
Number of limited partners who received common stock | item								2
Redemption of units | shares								13,930
Number of limited partners whose common stock redeemed | item								2
Value of units redeemed | $								$ 1,800