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Deferred Policy Acquisition Costs, Deferred Sales Inducements and Value of Business Acquired - Balance of and Changes in DSI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Movement in Deferred Sales Inducements [Roll Forward]      
Balance, BOP $ 480 $ 494  
Balance, EOP 443 480 $ 494
Individual Retirement Strategies      
Movement in Deferred Sales Inducements [Roll Forward]      
Reclassified to "Assets held-for-sale" 0 0 (342)
Individual Retirement Strategies | Individual Variable      
Movement in Deferred Sales Inducements [Roll Forward]      
Balance, BOP 446 799 866
Capitalization 2 1 1
Amortization expense (38) (46) (73)
Other adjustments 0 (308) 5
Balance, EOP 410 446 799
Other businesses      
Movement in Deferred Sales Inducements [Roll Forward]      
Balance, BOP 34 37  
Balance, EOP $ 33 $ 34 $ 37