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Summary of Significant Accounting Policies - Narrative (Details)
 6 Months Ended
Oct. 01, 2023
USD ($)
Jun. 30, 2024
USD ($)
segment
Property, Plant and Equipment [Line Items]    
Goodwill, impairment loss $ 0  
Observable tenor   30 years
Net premium ratio cap   100.00%
Share of profits on participating policies (limited to)   10.00%
Policyholder dividend, payment per $1,000 face amount   $ 50
Number of reportable segments | segment   4
Trade name    
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 life of real estate assets   15 years
Estimated useful lives of property and equipment   3 years
Minimum | Distributor relationships    
Property, Plant and Equipment [Line Items]    
Intangible asset useful life   15 years
Maximum    
Property, Plant and Equipment [Line Items]    
Estimated useful life of real estate assets   50 years
Estimated useful lives of property and equipment   30 years
Maximum | Distributor relationships    
Property, Plant and Equipment [Line Items]    
Intangible asset useful life   30 years