XML 13 R1.htm IDEA: XBRL DOCUMENT v3.25.1
DOCUMENT AND ENTITY INFORMATION
 3 Months Ended
Mar. 31, 2025
shares
Entity Information [Line Items]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Mar. 31, 2025
Document Transition Report false
Entity File Number 001-34034
Entity Registrant Name Regions Financial Corporation
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q1
Entity Central Index Key 0001281761
Current Fiscal Year End Date --12-31
Entity Incorporation, State or Country Code DE
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
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 898,930,154
Common Stock  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock, $.01 par value
Trading Symbol RF
Security Exchange Name NYSE
Series C  
Entity Information [Line Items]  
Title of 12(b) Security 5.700% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C
Trading Symbol RF PRC
Security Exchange Name NYSE
Series E  
Entity Information [Line Items]  
Title of 12(b) Security 4.45% Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol RF PRE
Security Exchange Name NYSE
Series F Preferred Stock  
Entity Information [Line Items]  
Title of 12(b) Security Non-Cumulative Perpetual Preferred Stock, Series F
Trading Symbol RF PRF
Security Exchange Name NYSE