XML 50 R39.htm IDEA: XBRL DOCUMENT v3.22.2
Investments - Available-for-Sale Investments (Details)
$ in Millions
Jun. 30, 2022
USD ($)
position
security
Dec. 31, 2021
USD ($)
position
security
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 3,009 $ 1,706
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 166 $ 18
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 1,466 677
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 86  
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 4  
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 45  
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 1,971 $ 1,063
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 104 $ 12
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 921 395
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 36 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 2 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 19 0
Mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 647 $ 408
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 40 $ 4
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | position 273 146
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 50 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 2 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | position 26 0
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 264 $ 166
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 13 $ 1
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | security 134 75
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 0 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 0 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | security 0 0
Municipal securities    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 100 $ 69
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 7 $ 1
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | security 124 61
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 0 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 0 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | security 0 0
Other    
Debt Securities, Available-for-sale [Line Items]    
In a Continuous Loss Position for Less than 12 Months, Estimated Fair Value $ 27  
In a Continuous Loss Position for Less than 12 Months, Gross Unrealized Losses $ 2  
In a Continuous Loss Position for Less than 12 Months, Total Number of Positions | security 14  
In a Continuous Loss Position for 12 Months or More, Estimated Fair Value $ 0 $ 0
In a Continuous Loss Position for 12 Months or More, Gross Unrealized Losses $ 0 $ 0
In a Continuous Loss Position for 12 Months or More, Total Number of Positions | security 0 0