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Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	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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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
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-Section 50
-Paragraph 18
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
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-Section 50
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