v3.24.0.1
Investments - Schedule of Allowance for Credit Losses (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance $ 459 $ 311
Initial credit losses 155 270
Initial credit losses on PCD securities 53 7
Securities sold during the period (55) (60)
Securities intended to be sold prior to recovery of amortized cost basis (15) (6)
Additions (reductions) to previously impaired securities (6) (63)
Ending Balance 591 459
Nonrelated Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 458 311
Initial credit losses 154 249
Initial credit losses on PCD securities 53 7
Securities sold during the period (55) (60)
Securities intended to be sold prior to recovery of amortized cost basis (15) (6)
Additions (reductions) to previously impaired securities (5) (43)
Ending Balance 590 458
Related Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 1 0
Initial credit losses 1 21
Initial credit losses on PCD securities 0 0
Securities sold during the period 0 0
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities (1) (20)
Ending Balance 1 1
Foreign governments    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Securities intended to be sold prior to recovery of amortized cost basis 0  
Foreign governments | Nonrelated Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 27 0
Initial credit losses 0 66
Initial credit losses on PCD securities 0 0
Securities sold during the period (27) (28)
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities 0 (11)
Ending Balance 0 27
Corporate    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Securities intended to be sold prior to recovery of amortized cost basis (15)  
Corporate | Nonrelated Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 61 0
Initial credit losses 88 70
Initial credit losses on PCD securities 0 0
Securities sold during the period (8) 0
Securities intended to be sold prior to recovery of amortized cost basis (15) (6)
Additions (reductions) to previously impaired securities 3 (3)
Ending Balance 129 61
Corporate | Related Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 0  
Ending Balance 0 0
CLO    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Securities intended to be sold prior to recovery of amortized cost basis 0  
CLO | Nonrelated Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 7 0
Initial credit losses 1 29
Initial credit losses on PCD securities 0 0
Securities sold during the period 0 0
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities (6) (22)
Ending Balance 2 7
CLO | Related Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 1 0
Initial credit losses 0 3
Initial credit losses on PCD securities 0 0
Securities sold during the period 0 0
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities (1) (2)
Ending Balance 0 1
ABS    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Securities intended to be sold prior to recovery of amortized cost basis 0  
ABS | Nonrelated Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 29 5
Initial credit losses 23 28
Initial credit losses on PCD securities 0 0
Securities sold during the period (4) (3)
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities 1 (1)
Ending Balance 49 29
ABS | Related Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 0 0
Initial credit losses 1 18
Initial credit losses on PCD securities 0 0
Securities sold during the period 0 0
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities 0 (18)
Ending Balance 1 0
CMBS    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Securities intended to be sold prior to recovery of amortized cost basis 0  
CMBS | Nonrelated Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 5 0
Initial credit losses 26 15
Initial credit losses on PCD securities 0 0
Securities sold during the period 0 0
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities (2) (10)
Ending Balance 29 5
RMBS    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Securities intended to be sold prior to recovery of amortized cost basis 0  
RMBS | Nonrelated Party    
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance 329 306
Initial credit losses 16 41
Initial credit losses on PCD securities 53 7
Securities sold during the period (16) (29)
Securities intended to be sold prior to recovery of amortized cost basis 0 0
Additions (reductions) to previously impaired securities (1) 4
Ending Balance $ 381 $ 329