v3.25.0.1
Investments - Mortgage Loans Credit Ratings Indicator (Details) - Commercial Real Estate - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans $ 1,505 $ 1,311
2024    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 315  
2023    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 292 302
2022    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 324 346
2021    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 218 244
2020    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 35 35
Prior    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 321 384
1    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 8 11
1 | 2024    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0  
1 | 2023    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
1 | 2022    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
1 | 2021    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
1 | 2020    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
1 | Prior    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 8 11
2 to 4    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 1,452 1,262
2 to 4 | 2024    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 315  
2 to 4 | 2023    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 292 302
2 to 4 | 2022    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 320 346
2 to 4 | 2021    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 205 225
2 to 4 | 2020    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 35 35
2 to 4 | Prior    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 285 354
5 and 6    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 45 32
5 and 6 | 2024    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0  
5 and 6 | 2023    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
5 and 6 | 2022    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 4 0
5 and 6 | 2021    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 13 13
5 and 6 | 2020    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
5 and 6 | Prior    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 28 19
7    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 6
7 | 2024    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0  
7 | 2023    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
7 | 2022    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
7 | 2021    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 6
7 | 2020    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans 0 0
7 | Prior    
Mortgage Loans on Real Estate [Line Items]    
Mortgage loans $ 0 $ 0