| Cover | Jan. 11, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 11, 2021 |
| Entity File Number | 001-36110 |
| Entity Registrant Name | SIMON PROPERTY GROUP, L.P. |
| Entity Central Index Key | 0001022344 |
| Entity Tax Identification Number | 34-1755769 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 225 WEST WASHINGTON STREET |
| Entity Address, City or Town | INDIANAPOLIS |
| Entity Address, State or Province | IN |
| Entity Address, Postal Zip Code | 46204 |
| City Area Code | 317 |
| Local Phone Number | 636.1600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
