v3.26.3
Future policy benefits (Premiums & interest) (Details) - Segment Life [Member] - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments $ 5,702 $ 5,037
Interest Accretion 371 309
Term Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 563 542
Interest Accretion 18 15
Whole Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 2,351 2,024
Interest Accretion 240 184
Accident and Health Insurance Product Line [Member]    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 2,433 2,314
Interest Accretion 96 98
Insurance, Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums or Assessments 355 157
Interest Accretion $ 17 $ 12