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Cover
Jul. 25, 2024
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Jul. 25, 2024
Entity Registrant Name REGIONS FINANCIAL CORPORATION
Entity Incorporation, State or 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, State or Province AL
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
Amendment Flag false
Current Fiscal Year End Date --12-31
Entity Central Index Key 0001281761
Common Stock  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, $.01 par value
Trading Symbol RF
Security Exchange Name NYSE
Series B Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security 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  
Document Information [Line Items]  
Title of 12(b) Security 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  
Document Information [Line Items]  
Title of 12(b) Security 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
Series F Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security Depositary Shares, each representing a 1/40th Interest in a Share of Non-Cumulative Perpetual Preferred Stock, Series F
Trading Symbol RF PRF
Security Exchange Name NYSE