XML 71 R55.htm IDEA: XBRL DOCUMENT v3.22.4
Investments - Available-for-Sale (Details)
$ in Millions
Dec. 31, 2022
USD ($)
position
Dec. 31, 2021
USD ($)
position
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 1,858 $ 1,706
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 77 $ 18
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 1,116 677
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 1,398 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 135 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 624 0
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 1,124 $ 1,063
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 45 $ 12
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 683 395
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 887 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 76 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 371 0
Mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 395 $ 408
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 20 $ 4
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 220 146
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 319 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 36 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 131 0
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 161 $ 166
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 6 $ 1
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 108 75
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 118 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 14 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 59 0
Municipal securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 75 $ 69
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 4 $ 1
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 83 61
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 57 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 7 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 57 0
U.S. Treasury notes    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 88  
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 1  
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 6  
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 0  
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 0  
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 0  
Other    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 15  
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 1  
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 16  
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 17  
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 2  
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 6