COVER PAGE - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2020	Feb. 18, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Annual Report	true
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	0-10587
Entity Registrant Name	FULTON FINANCIAL CORP
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-2195389
Entity Address, Address Line One	One Penn Square
Entity Address, Address Line Two	P. O. Box 4887
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
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1.6
Entity Common Stock, Shares Outstanding		162,460,000
Documents Incorporated by Reference	Portions of the Definitive Proxy Statement of the Registrant for the Annual Meeting of Shareholders to be held on May 25, 2021 are incorporated by reference in Part III.
Entity Central Index Key	0000700564
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $2.50 par value
Trading Symbol	FULT
Security Exchange Name	NASDAQ
Series A Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	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