v3.26.3
Separate Account Assets and Liabilities - Separate account assets (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value $ 94,707 $ 95,585
Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 59,087 58,504
Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 8,618 8,771
Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 25,330 26,677
Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,672 1,633
Group Retirement    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 41,165 40,701
Group Retirement | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 31,460 30,683
Group Retirement | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 2,954 3,160
Group Retirement | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 5,984 6,055
Group Retirement | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 767 803
Life Insurance    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,208 1,149
Life Insurance | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,085 1,027
Life Insurance | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 47 48
Life Insurance | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 62 59
Life Insurance | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 14 15
Institutional Markets    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 5,443 4,957
Institutional Markets | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 776 721
Institutional Markets | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,625 1,398
Institutional Markets | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 2,756 2,660
Institutional Markets | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 286 178
Corporate & Other    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 46,891 48,778
Corporate & Other | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 25,766 26,073
Corporate & Other | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 3,992 4,165
Corporate & Other | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 16,528 17,903
Corporate & Other | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value $ 605 $ 637