Equity - Temporary Equity (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024 USD ($) item shares	Dec. 31, 2023 USD ($) shares
Redeemable preferred stock
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests	$ 177,528	$ 195,949
Simon Property Group, L.P.
Redeemable preferred stock
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests	$ 177,528	195,949
7.5% Cumulative Redeemable Preferred Units
Redeemable preferred stock
Number of series of units classified into temporary equity | item	1
Noncontrolling interests redeemable at amounts in excess of fair value	$ 0	$ 0
Preferred stock stated dividend rate (as a percent)	7.50%	7.50%
Temporary equity, shares authorized | shares	260,000	260,000
Temporary equity, shares issued | shares	230,373	230,373
Temporary equity, shares outstanding | shares	230,373	230,373
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests	$ 23,037	$ 23,037
7.5% Cumulative Redeemable Preferred Units | Simon Property Group, L.P.
Redeemable preferred stock
Number of series of units classified into temporary equity | item	1
Preferred stock stated dividend rate (as a percent)	7.50%	7.50%
Temporary equity, shares authorized | shares	260,000	260,000
Temporary equity, shares issued | shares	230,373	230,373
Temporary equity, shares outstanding | shares	230,373	230,373
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests	$ 23,037	$ 23,037
Other noncontrolling redeemable interest
Redeemable preferred stock
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests	154,491	172,912
Other noncontrolling redeemable interest | Simon Property Group, L.P.
Redeemable preferred stock
Limited partners' preferred interest in the Operating Partnership and noncontrolling redeemable interests	$ 154,491	$ 172,912