Significant Accounting Policies - Reclassification Out of AOCI, Simon Property Group, Inc. (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Significant Accounting Policies
Total accumulated other comprehensive income (loss)	$ (229,000)		$ (229,000)		$ (199,500)
Interest expense	(218,086)	$ (187,316)	(417,515)	$ (372,473)
Net income attributable to noncontrolling interests	(70,328)	(71,903)	(136,921)	(132,747)
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	486,343	496,743	938,170	923,374
Accumulated derivative losses, net, including noncontrolling interests | Amount reclassified from accumulated other comprehensive income (loss)
Significant Accounting Policies
Interest expense	697	401	1,198	789
Accumulated derivative losses, attributable to noncontrolling interests | Amount reclassified from accumulated other comprehensive income (loss)
Significant Accounting Policies
Net income attributable to noncontrolling interests	(88)	(50)	(151)	(99)
Accumulated derivative gains (losses), net | Amount reclassified from accumulated other comprehensive income (loss)
Significant Accounting Policies
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	$ 609	$ 351	$ 1,047	$ 690