v3.26.1
Future Policy Benefits (Premiums and Interest) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense $ 711 $ 576
Liability for Future Policy Benefit, Gross Premium Income 3,895 3,558
Americas [Member] | Life Insurance Product Line [Member]    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 180 174
Liability for Future Policy Benefit, Gross Premium Income 1,584 1,589
Americas [Member] | Insurance, Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 134 123
Liability for Future Policy Benefit, Gross Premium Income 189 105
CANADA | Life Insurance Product Line [Member]    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 56 52
Liability for Future Policy Benefit, Gross Premium Income 282 264
CANADA | Insurance, Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 56 53
Liability for Future Policy Benefit, Gross Premium Income 45 52
EMEA [Member] | Life Insurance Product Line [Member]    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 12 10
Liability for Future Policy Benefit, Gross Premium Income 492 444
EMEA [Member] | Insurance, Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 105 62
Liability for Future Policy Benefit, Gross Premium Income 347 255
Asia Pacific [Member] | Life Insurance Product Line [Member]    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 48 43
Liability for Future Policy Benefit, Gross Premium Income 807 738
Asia Pacific [Member] | Insurance, Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Interest Expense 120 59
Liability for Future Policy Benefit, Gross Premium Income $ 149 $ 111