| Document and Entity Information | Feb. 25, 2021 |
| Document and Entity Information [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Feb. 25, 2021 |
| Entity Registrant Name | STORE Capital Corporation |
| Entity Incorporation, State or Country Code | MD |
| Entity File Number | 001-36739 |
| Entity Tax Identification Number | 45-2280254 |
| Entity Address, Address Line One | 8377 East Hartford Drive, Suite 100 |
| Entity Address, City or Town | Scottsdale |
| Entity Address, State or Province | AZ |
| Entity Address, Postal Zip Code | 85255 |
| City Area Code | 480 |
| Local Phone Number | 256-1100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | STOR |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001538990 |
| Amendment Flag | false |
