Document And Entity Information
Dec. 20, 2019
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Dec. 20, 2019
Entity Registrant Name SLEEP NUMBER CORP
Entity Central Index Key 0000827187
Entity Emerging Growth Company false
Entity File Number 000-25121
Entity Incorporation, State or Country Code MN
Entity Tax Identification Number 41-1597886
Entity Address, Address Line One 1001 Third Avenue South
Entity Address, City or Town Minneapolis
Entity Address, State or Province MN
Entity Address, Postal Zip Code 55404
City Area Code 763
Local Phone Number 551-7000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of each class Common Stock, par value $0.01 per share
Trading Symbol SNBR
Name of each exchange on which registered NASDAQ