| Document and Entity Information | Sep. 21, 2021 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | FULTON FINANCIAL CORP |
| Entity Incorporation State Country Code | PA |
| Amendment Flag | false |
| Entity Central Index Key | 0000700564 |
| Document Type | 8-K |
| Document Period End Date | Sep. 21, 2021 |
| Entity File Number | 001-39680 |
| Entity Tax Identification Number | 23-2195389 |
| Entity Address, Address Line One | One Penn Square |
| Entity Address, City or Town | Lancaster |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 17602 |
| City Area Code | (717) |
| Local Phone Number | 291-2411 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common stock, par value $2.50 |
| Trading Symbol | FULT |
| Security Exchange Name | NASDAQ |
| Series A Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing 1/40th interest in a share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A |
| Trading Symbol | FULTP |
| Security Exchange Name | NASDAQ |
