Statements of Net Assets Available for Benefits - SIMON PROPERTY GROUP AND ADOPTING ENTITIES MATCHING SAVINGS PLAN - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Statements of Net Assets Available for Benefits
Investments at fair value	$ 668,939,754	$ 592,722,851
Receivables:
Notes receivable from participants	5,421,872	4,915,566
Total assets available for benefits	674,361,626	597,638,417
Common/collective trust funds
Statements of Net Assets Available for Benefits
Investments at fair value	633,646,907	558,765,242
Common stock
Statements of Net Assets Available for Benefits
Investments at fair value	$ 35,292,847	$ 33,957,609

Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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+ Details

- Definition

Amount of asset less liability available to pay benefit of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, aggregation of participants' individual account balances.

+ References

+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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