v3.24.0.1
Long-duration Contracts - Schedule of Expected Value for Expected Net Premiums and Future Policy Benefits (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Present value of expected future policy benefits      
Beginning balance   $ 41,482  
Effect of changes in cash flow assumptions $ 297    
Issuances 13,518 11,528  
Interest accrual 1,664 1,146  
Benefit payments (3,852) (2,921)  
Other (1,509)    
Net future policy benefits 53,287 42,110  
Related Party      
Present value of expected future policy benefits      
Other (1,509)    
Total      
Present value of expected net premiums      
Beginning balance 0    
Issuances 3,091    
Interest accrual, partially offset 6    
Net premium collected (2,027)    
Foreign exchange 65    
Ending balance at original discount rate 1,135    
Effect of changes in discount rate assumptions 45    
Effect of foreign exchange on the change in discount rate assumptions 2    
Ending balance 1,182 0  
Present value of expected future policy benefits      
Beginning balance 36,422 35,278  
Effect of changes in discount rate assumptions 8,425 0  
Effect of foreign exchange on the change in discount rate assumptions (13)    
Beginning balance at original discount rate 44,834 35,278  
Effect of changes in cash flow assumptions   297  
Effect of actual experience to expected experience   (67) $ (120)
Adjusted balance   44,470 35,158
Issuances 13,518 11,528  
Interest accrual 1,664 1,146  
Benefit payments (3,852) (2,921)  
Foreign exchange 220 (77)  
Other (1,509) 44,834  
Ending balance at original discount rate 54,511 44,834  
Effect of changes in discount rate assumptions (6,144) 8,425  
Effect of foreign exchange on the change in discount rate assumptions (5) (13)  
Ending balance 48,372 36,422  
Net future policy benefits 47,190 36,422  
Payout annuities with life contingencies      
Present value of expected net premiums      
Beginning balance 0    
Issuances 0    
Interest accrual, partially offset 0    
Net premium collected 0    
Foreign exchange 0    
Ending balance at original discount rate 0    
Effect of changes in discount rate assumptions 0    
Effect of foreign exchange on the change in discount rate assumptions 0    
Ending balance 0 0  
Present value of expected future policy benefits      
Beginning balance 36,422 35,278  
Effect of changes in discount rate assumptions 8,425 0  
Effect of foreign exchange on the change in discount rate assumptions (13)    
Beginning balance at original discount rate 44,834 35,278  
Effect of changes in cash flow assumptions   297  
Effect of actual experience to expected experience   (67) (120)
Adjusted balance   44,470 35,158
Issuances 10,427 11,528  
Interest accrual 1,646    
Benefit payments (3,834) (2,921)  
Foreign exchange 35 (77)  
Other (1,509) 44,834  
Ending balance at original discount rate 51,235 44,834  
Effect of changes in discount rate assumptions (6,233) 8,425  
Effect of foreign exchange on the change in discount rate assumptions 1 (13)  
Ending balance 45,001 36,422  
Net future policy benefits $ 45,001 $ 36,422  
Liability for Future Policy Benefit, after Reinsurance [Abstract]      
Weighted-average liability duration (in years) 9 years 6 months 10 years 2 months 12 days  
Weighted-average interest accretion rate 3.60% 3.20%  
Weighted-average current discount rate 5.10% 5.50%  
Expected future gross premiums, undiscounted $ 0    
Expected future gross premiums, discounted 0    
Expected future benefit payments, undiscounted 75,261 $ 64,754  
Whole life      
Present value of expected net premiums      
Beginning balance 0    
Issuances 3,091    
Interest accrual, partially offset 6    
Net premium collected (2,027)    
Foreign exchange 65    
Ending balance at original discount rate 1,135    
Effect of changes in discount rate assumptions 45    
Effect of foreign exchange on the change in discount rate assumptions 2    
Ending balance 1,182 0  
Present value of expected future policy benefits      
Beginning balance 0 0  
Effect of changes in discount rate assumptions 0 0  
Effect of foreign exchange on the change in discount rate assumptions 0 0  
Beginning balance at original discount rate 0 0  
Effect of changes in cash flow assumptions   0  
Effect of actual experience to expected experience   0 0
Adjusted balance   0 $ 0
Issuances 3,091 0  
Interest accrual 18 0  
Benefit payments (18) 0  
Foreign exchange 185 0  
Other 0 0  
Ending balance at original discount rate 3,276 0  
Effect of changes in discount rate assumptions 89 0  
Effect of foreign exchange on the change in discount rate assumptions (6) 0  
Ending balance 3,371 0  
Net future policy benefits $ 2,189 $ 0  
Liability for Future Policy Benefit, after Reinsurance [Abstract]      
Weighted-average liability duration (in years) 33 years 6 months 0 years  
Weighted-average interest accretion rate 4.80% 0.00%  
Weighted-average current discount rate 4.10% 0.00%  
Expected future gross premiums, undiscounted $ 1,497    
Expected future gross premiums, discounted 1,239    
Expected future benefit payments, undiscounted $ 11,344 $ 0