Insurance (Fund Groupings) (Details) - Variable Annuity and Variable Life - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	$ 37,873	$ 51,998
Equity
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	20,875	29,346
Balanced
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	12,657	17,393
Bond
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	4,036	5,041
Money Market
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	$ 305	$ 218