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Significant Accounting Policies - Noncontrolling Interests, Simon Property Group, Inc. (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Significant Accounting Policies    
Limited partners' interests in the Operating Partnership $ 431,145 $ 477,292
Nonredeemable noncontrolling interests in properties, net 24,409 14,241
Total noncontrolling interests reflected in equity $ 455,554 $ 491,533