Equity - Shares or Units Activity (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	May 09, 2022 USD ($) $ / shares	Mar. 31, 2022 USD ($) item $ / shares shares	Mar. 31, 2021 $ / shares shares
Equity
Redemption of units		1,000	316
Common stock dividends paid (in dollars per share) | $ / shares		$ 1.65	$ 1.30
Subsequent Event
Equity
Common stock authorized for repurchase | $	$ 2,000,000
Period common stock is authorized to repurchase	2 years
Dividends declared per common share (in dollars per share) | $ / shares	$ 1.70
Simon Property Group, L.P.
Equity
Redemption of units		1,000	316
Distributions paid per unit (in dollars per unit) | $ / shares		$ 1.65	$ 1.30
Simon Property Group, L.P. | Limited Partners
Equity
Units issued		2,680
Number of limited partners who received common stock | item		2
Redemption of units		1,000
Value of units redeemed | $		$ 100