XML 118 R97.htm IDEA: XBRL DOCUMENT v3.25.0.1
Fair Value - Rollforward of Level 3 assets and liabilities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Purchases, issuances, sales and settlements    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net realized gains (losses) Net realized gains (losses)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net realized gains (losses) Net realized gains (losses)
Other liabilities    
Level 3 liabilities rollforward    
Balance at beginning of year $ (22) $ (14)
Total gains or (losses) (realized/unrealized) - included in earnings [1] 10 (1)
Total gains or (losses) (realized/unrealized) - included in other comprehensive income 1 0
Purchases, issuances, sales and settlements    
Purchases 0 0
Issuances (64) (9)
Sales 0 0
Settlements 2 2
Transfers in and/or out of Level 3 0 0
Balance at end of year (73) (22)
Equity securities    
Level 3 assets rollforward    
Balance at beginning of year 5 4
Total gains or (losses) (realized/unrealized) - included in earnings [1] 0 0
Total gains or (losses) (realized/unrealized) - included in other comprehensive income 0 0
Purchases, issuances, sales and settlements    
Purchases 2 1
Issuances 0 0
Sales 0 0
Settlements 0 0
Transfers in and/or out of Level 3 0 0
Balance at end of year 7 5
Available for sale | Corporate bonds    
Level 3 assets rollforward    
Balance at beginning of year 147 121
Total gains or (losses) (realized/unrealized) - included in earnings [1] 1 1
Total gains or (losses) (realized/unrealized) - included in other comprehensive income 2 (1)
Purchases, issuances, sales and settlements    
Purchases 100 111
Issuances 0 0
Sales 0 0
Settlements (153) (85)
Transfers in and/or out of Level 3 0 0
Balance at end of year 97 147
Available for sale | Short-term investments    
Level 3 assets rollforward    
Balance at beginning of year 84 0
Total gains or (losses) (realized/unrealized) - included in earnings [1] 0 0
Total gains or (losses) (realized/unrealized) - included in other comprehensive income 1 0
Purchases, issuances, sales and settlements    
Purchases 12 84
Issuances 0 0
Sales 0 0
Settlements (97) 0
Transfers in and/or out of Level 3 0 0
Balance at end of year 0 84
Fair value option | Other investments    
Level 3 assets rollforward    
Balance at beginning of year 106 33
Total gains or (losses) (realized/unrealized) - included in earnings [1] (5) (5)
Total gains or (losses) (realized/unrealized) - included in other comprehensive income 0 0
Purchases, issuances, sales and settlements    
Purchases 148 107
Issuances 0 0
Sales (5) (10)
Settlements (70) (19)
Transfers in and/or out of Level 3 15 0
Balance at end of year 189 106
Fair value option | Short-term investments    
Level 3 assets rollforward    
Balance at beginning of year 10 0
Total gains or (losses) (realized/unrealized) - included in earnings [1] 0 0
Total gains or (losses) (realized/unrealized) - included in other comprehensive income 0 0
Purchases, issuances, sales and settlements    
Purchases 41 11
Issuances 0 0
Sales 0 0
Settlements (18) (1)
Transfers in and/or out of Level 3 0 0
Balance at end of year 33 10
Fair value option | Equity securities    
Level 3 assets rollforward    
Balance at beginning of year 4 4
Total gains or (losses) (realized/unrealized) - included in earnings [1] 0 0
Total gains or (losses) (realized/unrealized) - included in other comprehensive income 0 0
Purchases, issuances, sales and settlements    
Purchases 0 0
Issuances 0 0
Sales 0 0
Settlements 0 0
Transfers in and/or out of Level 3 0 0
Balance at end of year $ 4 $ 4
[1] Gains or losses were included in net realized gains (losses).