v3.24.1.u1
Deferred Policy Acquisition Costs - Rollforward of LDTI and VOBA (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Deferred policy acquisition costs and value of business acquired $ 10,049   $ 10,011
Long-Duration Insurance Contracts And Value Of Business Acquired      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Deferred policy acquisition costs and value of business acquired   $ 10,641  
Long-Duration Insurance Contracts      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 9,994 10,472  
Capitalization 340 319  
Amortization expense (266) (253)  
Other, including foreign exchange (7) 13  
Reclassified to Assets held-for-sale (27)    
Balance, end of year 10,034 10,551  
Long-Duration Insurance Contracts | Individual Retirement      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 4,777 4,643  
Capitalization 170 187  
Amortization expense (149) (137)  
Other, including foreign exchange 0 0  
Reclassified to Assets held-for-sale 0    
Balance, end of year 4,798 4,693  
Long-Duration Insurance Contracts | Group Retirement      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 1,055 1,060  
Capitalization 22 21  
Amortization expense (21) (21)  
Other, including foreign exchange 0 0  
Reclassified to Assets held-for-sale 0    
Balance, end of year 1,056 1,060  
Long-Duration Insurance Contracts | Life Insurance      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 4,092 4,718  
Capitalization 135 107  
Amortization expense (93) (93)  
Other, including foreign exchange (7) 13  
Reclassified to Assets held-for-sale (27)    
Balance, end of year 4,100 4,745  
Long-Duration Insurance Contracts | Institutional Markets      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 70 51  
Capitalization 13 4  
Amortization expense (3) (2)  
Other, including foreign exchange 0 0  
Reclassified to Assets held-for-sale 0    
Balance, end of year 80 53  
Value Of Business Acquired      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 17 91  
Amortization expense (1) (3)  
Other, including foreign exchange (1) 2  
Balance, end of year 15 90  
Value Of Business Acquired | Individual Retirement      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 2 3  
Amortization expense 0 0  
Other, including foreign exchange 0 (2)  
Balance, end of year 2 1  
Value Of Business Acquired | Group Retirement      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 1 1  
Amortization expense 0 0  
Other, including foreign exchange 0 0  
Balance, end of year 1 1  
Value Of Business Acquired | Life Insurance      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 14 87  
Amortization expense (1) (3)  
Other, including foreign exchange (1) 4  
Balance, end of year 12 88  
Value Of Business Acquired | Institutional Markets      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 0 0  
Amortization expense 0 0  
Other, including foreign exchange 0 0  
Balance, end of year $ 0 $ 0