v3.25.2
Dispositions - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 01, 2025
Apr. 01, 2025
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Gain on disposition of operations     $ 890   $ 0 $ 890 $ 0  
Disposal Group, Held-for-Sale, Not Discontinued Operations | EVB                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Proceeds from disposal   $ 1,900            
Gain on disposition of operations     890          
Gain on sale of business after tax     643          
Premiums and contract charges       $ 243        
Adjusted net income (loss) by segment, after-tax       $ 22        
Accumulated other comprehensive losses   51            
Reserve for future policy benefits   $ 1,096           $ 1,085
Disposal Group, Held-for-Sale, Not Discontinued Operations | Group Health                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Premiums and contract charges     123     247    
Adjusted net income (loss) by segment, after-tax     $ 9     $ 21    
Disposal Group, Held-for-Sale, Not Discontinued Operations | Group Health | Subsequent Event                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Proceeds from disposal $ 1,250              
Reserve for future policy benefits $ 219              
Number of period provided for transition services 24 months