v3.25.2
Fair Value of Assets and Liabilities - Schedule of Rollforward of Level 3 Assets and Liabilities Held at Fair Value (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Assets        
Balance at beginning of period $ 845 $ 694 $ 802 $ 676
Total gains (losses) included in: Net income 19 (3) 31 4
Total gains (losses) included in: OCI 2 (1) 3 1
Transfers Into Level 3 0 0 26 0
Transfers Out of Level 3 (26) 0 (33) 0
Purchases 18 35 43 55
Sales (83) (48) (96) (57)
Settlements (2) (2) (3) (4)
Balance at end of period 773 675 773 675
Liabilities        
Balance at the beginning of the period (1) 0 0 0
Total gains (losses) included in: net income 0 0 (1) 0
Total gains (losses) included in: OCI 0 0 0 0
Transfers into Level 3 0 0 0 0
Transfers out of Level 3 0 0 0 0
Purchases 0 0 0 0
Sales 0 0 0 0
Settlements 0 0 0 0
Balance at the end of the period $ (1) $ 0 $ (1) $ 0
Net investment income        
Total Level 3 gains (losses) included in net income        
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net investment income Net investment income Net investment income Net investment income
Gain (loss) included in earnings $ 0 $ 1 $ 0 $ 1
Net gains (losses) on investments and derivatives        
Total Level 3 gains (losses) included in net income        
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net gains (losses) on investments and derivatives Net gains (losses) on investments and derivatives Net gains (losses) on investments and derivatives Net gains (losses) on investments and derivatives
Gain (loss) included in earnings $ 16 $ (5) $ 27 $ 0
Operating costs and expenses        
Total Level 3 gains (losses) included in net income        
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Operating costs and expenses Operating costs and expenses Operating costs and expenses Operating costs and expenses
Gain (loss) included in earnings $ 3 $ 1 $ 3 $ 3
Other liabilities        
Liabilities        
Balance at the beginning of the period (1)   0  
Total gains (losses) included in: net income 0   (1)  
Total gains (losses) included in: OCI 0   0  
Transfers into Level 3 0   0  
Transfers out of Level 3 0   0  
Purchases 0   0  
Sales 0   0  
Settlements 0   0  
Balance at the end of the period (1)   (1)  
Municipal        
Assets        
Balance at beginning of period 2 8 2 11
Total gains (losses) included in: Net income 0 0 0 0
Total gains (losses) included in: OCI 0 0 0 0
Transfers Into Level 3 0 0 0 0
Transfers Out of Level 3 0 0 0 0
Purchases 0 0 0 0
Sales 0 (1) 0 (2)
Settlements 0 0 0 (2)
Balance at end of period 2 7 2 7
Corporate - public        
Assets        
Balance at beginning of period 35 23 22 26
Total gains (losses) included in: Net income 0 1 (1) 1
Total gains (losses) included in: OCI 0 (1) 1 1
Transfers Into Level 3 0 0 0 0
Transfers Out of Level 3 0 0 (7) 0
Purchases 0 11 20 11
Sales 0 (4) 0 (9)
Settlements 0 0 0 0
Balance at end of period 35 30 35 30
Corporate - privately placed        
Assets        
Balance at beginning of period 109 54 110 58
Total gains (losses) included in: Net income 0 (2) (1) (6)
Total gains (losses) included in: OCI 1 0 1 0
Transfers Into Level 3 0 0 0 0
Transfers Out of Level 3 0 0 0 0
Purchases 0 0 0 0
Sales 0 (2) 0 (2)
Settlements (1) 0 (1) 0
Balance at end of period 109 50 109 50
ABS        
Assets        
Balance at beginning of period 51   26  
Total gains (losses) included in: Net income 0   0  
Total gains (losses) included in: OCI 0   0  
Transfers Into Level 3 0   26  
Transfers Out of Level 3 (26)   (26)  
Purchases 15   15  
Sales 0   0  
Settlements (1)   (2)  
Balance at end of period 39   39  
MBS        
Assets        
Balance at beginning of period 88   88  
Total gains (losses) included in: Net income 0   0  
Total gains (losses) included in: OCI 0   0  
Transfers Into Level 3 0   0  
Transfers Out of Level 3 0   0  
Purchases 0   0  
Sales 0   0  
Settlements 0   0  
Balance at end of period 88   88  
ABS and MBS        
Assets        
Balance at beginning of period   58   58
Total gains (losses) included in: Net income   0   0
Total gains (losses) included in: OCI   0   0
Transfers Into Level 3   0   0
Transfers Out of Level 3   0   0
Purchases   14   14
Sales   0   0
Settlements   (1)   (1)
Balance at end of period   71   71
Fixed income securities        
Assets        
Balance at beginning of period 285 143 248 153
Total gains (losses) included in: Net income 0 (1) (2) (5)
Total gains (losses) included in: OCI 1 (1) 2 1
Transfers Into Level 3 0 0 26 0
Transfers Out of Level 3 (26) 0 (33) 0
Purchases 15 25 35 25
Sales 0 (7) 0 (13)
Settlements (2) (1) (3) (3)
Balance at end of period 273 158 273 158
Equity securities        
Assets        
Balance at beginning of period 416 408 407 402
Total gains (losses) included in: Net income 16 (3) 30 6
Total gains (losses) included in: OCI 0 0 0 0
Transfers Into Level 3 0 0 0 0
Transfers Out of Level 3 0 0 0 0
Purchases 1 9 5 9
Sales (75) (21) (84) (24)
Settlements 0 0 0 0
Balance at end of period 358 393 358 393
Short-term investments        
Assets        
Balance at beginning of period 2 21 5 1
Total gains (losses) included in: Net income 0 0 0 0
Total gains (losses) included in: OCI 0 0 0 0
Transfers Into Level 3 0 0 0 0
Transfers Out of Level 3 0 0 0 0
Purchases 2 1 3 21
Sales 0 (20) (4) (20)
Settlements 0 (1) 0 (1)
Balance at end of period 4 1 4 1
Other investments        
Assets        
Balance at beginning of period 1 2 1 2
Total gains (losses) included in: Net income 0 0 0 0
Total gains (losses) included in: OCI 0 0 0 0
Transfers Into Level 3 0 0 0 0
Transfers Out of Level 3 0 0 0 0
Purchases 0 0 0 0
Sales 0 0 0 0
Settlements 0 0 0 0
Balance at end of period 1 2 1 2
Other assets        
Assets        
Balance at beginning of period 134 120 134 118
Total gains (losses) included in: Net income 3 1 3 3
Total gains (losses) included in: OCI 0 0 0 0
Transfers Into Level 3 0 0 0 0
Transfers Out of Level 3 0 0 0 0
Purchases 0 0 0 0
Sales 0 0 0 0
Settlements 0 0 0 0
Balance at end of period 137 $ 121 137 $ 121
Assets held for sale        
Assets        
Balance at beginning of period 7   7  
Total gains (losses) included in: Net income 0   0  
Total gains (losses) included in: OCI 1   1  
Transfers Into Level 3 0   0  
Transfers Out of Level 3 0   0  
Purchases 0   0  
Sales (8)   (8)  
Settlements 0   0  
Balance at end of period $ 0   $ 0