v3.26.1
Investments (Fixed Maturity Securities Pledged And Received As Collateral) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Available for Sale at Fair value - Amortized cost $ 114,976 $ 107,264
Fixed maturity securities, available-for-sale 107,328 [1] 101,769 [2]
Collateral Fixed Maturity Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Available for Sale at Fair value - Amortized cost 1,880 1,739
Fixed maturity securities, available-for-sale 1,566 1,527
Collateral Received Fixed Maturity Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fixed maturity securities, available-for-sale 2,551 2,620
Reported Value Measurement [Member]    
Debt Securities, Available-for-sale [Line Items]    
Assets Held-in-trust 75,687 68,241
Estimate of Fair Value Measurement [Member]    
Debt Securities, Available-for-sale [Line Items]    
Assets Held-in-trust 71,102 65,154
Deposits    
Debt Securities, Available-for-sale [Line Items]    
Available for Sale at Fair value - Amortized cost 10 10
Fixed maturity securities, available-for-sale 9 9
Federal Home Loan Bank Certificates and Obligations (FHLB)    
Debt Securities, Available-for-sale [Line Items]    
Available for Sale at Fair value - Amortized cost 68 68
Fixed maturity securities, available-for-sale $ 68 $ 68
[1] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of March 31, 2026, the fair value of such investments was $935 million.
[2] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2025, the fair value of such investments was $925 million