v3.21.2
Document and Entity Information
Jul. 21, 2021
Document And Entity Information [Line Items]  
Entity Registrant Name REGIONS FINANCIAL CORP
Entity Address, State or Province AL
Amendment Flag false
Entity Central Index Key 0001281761
Current Fiscal Year End Date --12-31
Document Type 8-K
Document Period End Date Jul. 21, 2021
Entity Incorporation State Country Code DE
Entity File Number 001-34034
Entity Tax Identification Number 63-0589368
Entity Address, Address Line One 1900 FIFTH AVENUE NORTH
Entity Address, City or Town BIRMINGHAM
Entity Address, Postal Zip Code 35203
City Area Code (800)
Local Phone Number 734-4667
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, $.01 par value
Trading Symbol RF
Security Exchange Name NYSE
Series B Preferred Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Depositary Shares, each representing a 1/40th Interest in a Share of 6.375% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series B
Trading Symbol RF PRB
Security Exchange Name NYSE
Series C Preferred Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Depositary Shares, each representing a 1/40th Interest in a Share of 5.700% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C
Trading Symbol RF PRC
Security Exchange Name NYSE
Series E Preferred Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Depositary Shares, each representing a 1/40th Interest in a Share of 4.45% Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol RF PRE
Security Exchange Name NYSE