| Document and Entity Information | Feb. 20, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 20, 2020 |
| Entity Registrant Name | Sprouts Farmers Market, Inc. |
| Entity Central Index Key | 0001575515 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-36029 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 32-0331600 |
| Entity Address, Address Line One | 5455 E. High Street |
| Entity Address, Address Line Two | Suite 111 |
| Entity Address, City or Town | Phoenix |
| Entity Address, State or Province | AZ |
| Entity Address, Postal Zip Code | 85054 |
| City Area Code | 480 |
| Local Phone Number | 814-8016 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of Each Class | Common Stock, $0.001 par value |
| Trading Symbol | SFM |
| Security Exchange Name | NASDAQ |
