v3.26.1
Insurance Liabilities (Future Policy Benefits - Reconciliation) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Mar. 31, 2025
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Liability for Future Policy Benefit, before Reinsurance $ 31,424 $ 31,442
Liabilities reported in the preceding rollforward tables    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Liability for Future Policy Benefit, before Reinsurance 22,443 21,548
Long-term care insurance (1)    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Liability for Future Policy Benefit, before Reinsurance 5,046 5,191
ULSG liabilities, including liability for profits followed by losses    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Liability for Future Policy Benefit, before Reinsurance 58 965
Participating whole life insurance (2)    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Liability for Future Policy Benefit, before Reinsurance 3,071 2,987
Deferred profit liabilities    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Liability for Future Policy Benefit, before Reinsurance 452 448
Other    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Liability for Future Policy Benefit, before Reinsurance $ 354 $ 303