v3.22.2.2
Document and Entity Information Document
Dec. 02, 2022
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Dec. 02, 2022
Entity Registrant Name ALLSTATE CORP
Entity Incorporation, State or Country Code DE
Entity File Number 1-11840
Entity Tax Identification Number 36-3871531
Entity Address, Address Line One 3100 Sanders Road
Entity Address, City or Town Northbrook
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60062
City Area Code 847
Local Phone Number 402-5000
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
Entity Central Index Key 0000899051
Common Stock | NEW YORK STOCK EXCHANGE, INC.  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, par value $.01 per share
Trading Symbol ALL
Security Exchange Name NYSE
Common Stock | CHICAGO STOCK EXCHANGE, INC  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, par value $.01 per share
Trading Symbol ALL
Security Exchange Name CHX
Subordinated Debentures Due 2053 at 5.10 Percent  
Document Information [Line Items]  
Title of 12(b) Security 5.100% Fixed-to-Floating Rate Subordinated Debentures due 2053
Trading Symbol ALL.PR.B
Security Exchange Name NYSE
Series G Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security Depositary Shares represent 1/1,000th of a share of 5.625% Noncumulative Preferred Stock, Series G
Trading Symbol ALL PR G
Security Exchange Name NYSE
Series H Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security Depositary Shares represent 1/1,000th of a share of 5.100% Noncumulative Preferred Stock, Series H
Trading Symbol ALL PR H
Security Exchange Name NYSE
Series I Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security Depositary Shares represent 1/1,000th of a share of 4.750% Noncumulative Preferred Stock, Series I
Trading Symbol ALL PR I
Security Exchange Name NYSE