| Cover Page | Apr. 30, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity File Number | 1-6140 |
| Document Type | 8-K |
| Document Period End Date | Apr. 30, 2020 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1600 Cantrell Road |
| Entity Address, City or Town | Little Rock |
| Entity Address, State or Province | AR |
| Entity Tax Identification Number | 71-0388071 |
| Entity Address, Postal Zip Code | 72201 |
| City Area Code | 501 |
| Local Phone Number | 376-5200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000028917 |
| Entity Registrant Name | DILLARDS, INC. |
