Separate Accounts (Schedule of Fair Value of Separate Account Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Separate Account Investment [Line Items]
Separate account assets	$ 153,246	$ 143,536
Separate Account, Mutual Funds And Collective Investment Trusts [Member]
Fair Value, Separate Account Investment [Line Items]
Separate account assets	152,584	142,892
Separate Account Exchange-traded Funds [Member]
Fair Value, Separate Account Investment [Line Items]
Separate account assets	364	258
Separate Account, Fixed maturity AFS securities [Member]
Fair Value, Separate Account Investment [Line Items]
Separate account assets	169	169
Separate Account, Cash and Invested Cash [Member]
Fair Value, Separate Account Investment [Line Items]
Separate account assets	3	98
Separate Account, Other Investments [Member]
Fair Value, Separate Account Investment [Line Items]
Separate account assets	$ 126	$ 119