| Document and Entity Information | Feb. 16, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Feb. 16, 2025 |
| Entity Registrant Name | SHIFT4 PAYMENTS, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39313 |
| Entity Tax Identification Number | 84-3676340 |
| Entity Address Address Line 1 | 3501 Corporate Pkwy |
| Entity Address City Or Town | Center Valley |
| Entity Address State Or Province | PA |
| Entity Address Postal Zip Code | 18034 |
| City Area Code | 888 |
| Local Phone Number | 276-2108 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A common stock, par value $0.0001 |
| Trading Symbol | FOUR |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001794669 |
| Amendment Flag | false |
