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Cover
Sep. 25, 2024
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 25, 2024
Entity File Number 001-31911
Entity Registrant Name AMERICAN NATIONAL GROUP INC.
Entity Central Index Key 0001039828
Entity Tax Identification Number 42-1447959
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One One Moody Plaza
Entity Address, City or Town Galveston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77550
City Area Code 888
Local Phone Number 252-0177
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Series A Preferred Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Depositary Shares, each representing a 1/1,000th interest in a share of 5.95% Fixed-Rate Reset Non-Cumulative Preferred Stock, Series A
Trading Symbol ANGpA
Security Exchange Name NYSE
Series B Preferred Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Depositary Shares, each representing a 1/1,000th interest in a share of 6.625% Fixed-Rate Reset Non-Cumulative Preferred Stock, Series B
Trading Symbol ANGpB
Security Exchange Name NYSE