| Document and Entity Information | Jan. 20, 2022 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 20, 2022 |
| Entity Registrant Name | SPIRIT REALTY CAPITAL, INC. |
| Entity Central Index Key | 0001308606 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-36004 |
| Entity Incorporation State Country Code | MD |
| Entity Tax Identification Number | 20-1676382 |
| Entity Address, Address Line One | 2727 North Harwood Street |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | Dallas |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75201 |
| City Area Code | (972) |
| Local Phone Number | 476-1900 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common stock, par value $0.05 per share |
| Trading Symbol | SRC |
| Security Exchange Name | NYSE |
| Series A Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 6.000% Series A Cumulative Redeemable Preferred Stock, par value $0.01 per share |
| Trading Symbol | SRC-A |
| Security Exchange Name | NYSE |
