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	$ 74,445	$ 101,263
Balanced
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	45,702	62,553
Equity
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	21,979	30,185
Bond
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	6,749	8,510
Money Market
Fair Value, Separate Account Investment [Line Items]
Fund Groupings	$ 15	$ 15