v3.26.1
Future policy benefits (Premiums & interest) (Details) - Segment Life [Member] - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments $ 3,899 $ 3,241
Interest Accretion 241 202
Term Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 374 353
Interest Accretion 11 10
Whole Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 1,657 1,250
Interest Accretion 156 120
Accident and Health Insurance Product Line [Member]    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 1,608 1,509
Interest Accretion 63 65
Insurance, Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 260 129
Interest Accretion $ 11 $ 7