XML 56 R44.htm IDEA: XBRL DOCUMENT v3.24.2
Investments - Available-for-Sale Investments (Details)
$ in Millions
Jun. 30, 2024
USD ($)
position
Dec. 31, 2023
USD ($)
position
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 792 $ 386
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 7 $ 3
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 538 258
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 2,395 $ 2,431
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 114 $ 126
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 1,272 1,261
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 648 $ 263
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 5 $ 1
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 421 160
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 1,524 $ 1,553
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 52 $ 64
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 725 754
Mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 144 $ 123
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 2 $ 2
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 117 98
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 516 $ 549
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 43 $ 42
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 314 283
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 0 $ 0
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 0 $ 0
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 0 0
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 220 $ 195
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 10 $ 12
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 104 91
Municipal securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 0 $ 0
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 0 $ 0
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 0 0
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 113 $ 117
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 7 $ 6
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 108 116
Other    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 0 $ 0
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 0 $ 0
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 0 0
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 22 $ 17
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 2 $ 2
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 21 17