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Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended
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Dec. 31, 2024 segment
Property, Plant and Equipment [Line Items] |
Observable tenor | 30 years
Net premium ratio cap | 100.00%
Number of reportable segments | 3
Trade name | American National Group Inc. |
Property, Plant and Equipment [Line Items] |
Intangible asset useful life | 10 years
Trade name | AEL |
Property, Plant and Equipment [Line Items] |
Intangible asset useful life | 10 years
Minimum |
Property, Plant and Equipment [Line Items] |
Estimated useful lives of property and equipment | 3 years
Minimum | Real Estate and Real Estate Investments |
Property, Plant and Equipment [Line Items] |
Estimated useful lives of property and equipment | 15 years
Minimum | Distribution Relationship |
Property, Plant and Equipment [Line Items] |
Intangible asset useful life | 15 years
Maximum |
Property, Plant and Equipment [Line Items] |
Estimated useful lives of property and equipment | 30 years
Maximum | Real Estate and Real Estate Investments |
Property, Plant and Equipment [Line Items] |
Estimated useful lives of property and equipment | 50 years
Maximum | Distribution Relationship |
Property, Plant and Equipment [Line Items] |
Intangible asset useful life | 30 years

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