Cover Page - USD ($)	12 Months Ended
	Feb. 01, 2020	Feb. 29, 2020	Aug. 03, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Entity File Number	1-6140
Entity Registrant Name	DILLARD'S, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	71-0388071
Entity Address, Address Line One	1600 CANTRELL ROAD
Entity Address, City or Town	LITTLE ROCK
Entity Address, State or Province	AR
Entity Address, Postal Zip Code	72201
City Area Code	501
Local Phone Number	376-5200
Title of 12(b) Security	Class A Common Stock
Trading Symbol	DDS
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,184,463,131
Entity Central Index Key	0000028917
Document Period End Date	Feb. 01, 2020
Amendment Flag	false
Current Fiscal Year End Date	--02-01
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Common Stock Class A
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		19,367,269
Common Stock Class B
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		4,010,401