| Document and Entity Information | Oct. 23, 2020 |
| Cover [Abstract] | |
| Entity Registrant Name | FULTON FINANCIAL CORP |
| Amendment Flag | false |
| Entity Central Index Key | 0000700564 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Oct. 23, 2020 |
| Entity Incorporation State Country Code | PA |
| Entity File Number | 0-10587 |
| 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 | 17604 |
| 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 |
| Security 12b Title | Common Stock, $2.50 par value |
| Trading Symbol | FULT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
