XML 51 R36.htm IDEA: XBRL DOCUMENT v3.21.1
Investments - Unrealized Loss Position Maturities (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]    
Less than one year $ 9  
One year through five years 1,571  
After five years through ten years 1,316  
Greater than ten years 478  
Fair Value 4,588 $ 915
Unrealized Losses    
Less than one year 0  
One year through five years 13  
After five years through ten years 25  
Greater than ten years 16  
Unrealized Losses 75 11
Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 396  
Fair Value 396 26
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 6  
Unrealized Losses 6 0
Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 311  
Fair Value 311 75
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 13  
Unrealized Losses 13 0
Other asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 507  
Fair Value 507 297
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 2  
Unrealized Losses 2 $ 2
Supporting experience-rated products    
Debt Securities, Available-for-sale [Line Items]    
Less than one year 0  
One year through five years 2  
After five years through ten years 29  
Greater than ten years 23  
Fair Value 63  
Unrealized Losses    
Less than one year 0  
One year through five years 0  
After five years through ten years 0  
Greater than ten years 1  
Unrealized Losses 2  
Supporting experience-rated products | Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 0  
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 0  
Supporting experience-rated products | Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 6  
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 1  
Supporting experience-rated products | Other asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 3  
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 0  
Supporting remaining products    
Debt Securities, Available-for-sale [Line Items]    
Less than one year 9  
One year through five years 1,569  
After five years through ten years 1,287  
Greater than ten years 455  
Fair Value 4,525  
Unrealized Losses    
Less than one year 0  
One year through five years 13  
After five years through ten years 25  
Greater than ten years 15  
Unrealized Losses 73  
Supporting remaining products | Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 396  
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 6  
Supporting remaining products | Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 305  
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses 12  
Supporting remaining products | Other asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt securities, maturity, without single maturity date, fair value 504  
Unrealized Losses    
Debt securities, maturity, without single maturity date, unrealized losses $ 2