| Document and Entity Information | Dec. 08, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001326380 |
| Document Type | 8-K |
| Document Period End Date | Dec. 8, 2020 |
| Entity Registrant Name | GameStop Corp. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-32637 |
| Entity Tax Identification Number | 20-2733559 |
| Entity Address, Address Line One | 625 Westport Parkway |
| Entity Address, City or Town | Grapevine |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 76051 |
| City Area Code | 817 |
| Local Phone Number | 424-2000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock |
| Trading Symbol | GME |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
