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Policyholder Account Balances, Future Policy Benefits and Claims - Composition (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Policyholder account balances      
Policyholder account balances $ 32,542 $ 27,947 $ 24,986
Future policy benefits      
Reserve for future policy benefits 7,418 7,763  
Deferred profit liability 118 81  
Additional liabilities for insurance guarantees 1,389 1,321  
Other insurance and annuity liabilities 192 213  
Total future policy benefits 9,117 9,378  
Policy claims and other policyholders' funds 214 220  
Total policyholder account balances, future policy benefits and claims $ 41,873 $ 37,545