Equity - Shares or Units Activity (Details) $ / shares in Units, $ in Thousands			3 Months Ended				6 Months Ended		12 Months Ended
	Aug. 02, 2023 $ / shares	May 09, 2022 USD ($)	Jun. 30, 2023 $ / shares shares	Mar. 31, 2023 shares	Jun. 30, 2022 shares	Mar. 31, 2022 shares	Jun. 30, 2023 USD ($) item $ / shares shares	Jun. 30, 2022 $ / shares	Dec. 31, 2022 $ / shares shares
Equity
Common Stock, Dividends, Per Share, Cash Paid			$ 1.85				$ 3.65	$ 3.35
Redemption of units | shares			71,630	22,442	12,930	1,000
Common stock authorized for repurchase | $		$ 2,000,000
Period common stock is authorized to repurchase		2 years
Shares repurchased (in shares) | shares					1,424,096				1,830,022
Average share price repurchased (in dollars per share)									$ 98.57
Subsequent Event
Equity
Dividends declared per common share (in dollars per share)	$ 1.90
Simon Property Group, L.P.
Equity
Redemption of units | shares			71,630	22,442	12,930	1,000
Distributions paid per unit (in dollars per unit)			$ 1.85				$ 3.65	$ 3.35
Simon Property Group, L.P. | Subsequent Event
Equity
Distribution declared per unit (in dollars per share)	$ 1.90
Simon Property Group, L.P. | Limited Partners
Equity
Redemption of units | shares							94,072
Number of limited partners whose common stock redeemed | item							6
Value of units redeemed | $							$ 10,700