Document and Entity Information |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Document and Entity Information | |
| Document Type | 11-K |
| Document Period End Date | Dec. 31, 2025 |
| Entity Registrant Name | SIMON PROPERTY GROUP, INC. |
| Entity Central Index Key | 0001063761 |
| Amendment Flag | false |
| SIMON PROPERTY GROUP AND ADOPTING ENTITIES MATCHING SAVINGS PLAN | |
| Document and Entity Information | |
| Document Type | 11-K |
| Document Period End Date | Dec. 31, 2025 |
| Amendment Flag | false |