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Document and Entity Information
Mar. 05, 2020
Cover [Abstract]  
Entity Registrant Name Sleep Number Corp
Amendment Flag false
Entity Central Index Key 0000827187
Document Type 8-K
Document Period End Date Mar. 05, 2020
Entity Incorporation State Country Code MN
Entity File Number 0-25121
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
Security 12b Title Common Stock, par value $0.01 per share
Trading Symbol SNBR
Security Exchange Name NASDAQ
Entity Emerging Growth Company false