| Cover Page | Apr. 29, 2020 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Apr. 29, 2020 |
| Entity Registrant Name | QEP RESOURCES, INC. |
| Entity Central Index Key | 0001108827 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-34778 |
| Entity Tax Identification Number | 87-0287750 |
| Entity Address, Address Line One | 1050 17th Street, Suite 800 |
| Entity Address, City or Town | Denver |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80265 |
| City Area Code | 303 |
| Local Phone Number | 672-6900 |
| 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 | QEP |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
