v3.26.1
Separate Account Assets and Liabilities - Separate account assets (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value $ 98,771 $ 95,585
Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 61,439 58,504
Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 9,106 8,771
Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 26,514 26,677
Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,712 1,633
Group Retirement    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 42,881 40,701
Group Retirement | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 32,764 30,683
Group Retirement | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 3,182 3,160
Group Retirement | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 6,180 6,055
Group Retirement | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 755 803
Life Insurance    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,234 1,149
Life Insurance | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,108 1,027
Life Insurance | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 48 48
Life Insurance | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 63 59
Life Insurance | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 15 15
Institutional Markets    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 5,536 4,957
Institutional Markets | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 788 721
Institutional Markets | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 1,689 1,398
Institutional Markets | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 2,747 2,660
Institutional Markets | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 312 178
Corporate & Other    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 49,120 48,778
Corporate & Other | Equity funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 26,779 26,073
Corporate & Other | Bond funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 4,187 4,165
Corporate & Other | Balanced funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value 17,524 17,903
Corporate & Other | Money market funds    
Fair Value, Separate Account Investment [Line Items]    
Separate account assets, at fair value $ 630 $ 637