Separate Accounts (Aggregate FV of Assets Supporting Separate Accounts) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Separate Account, Liability [Line Items]
Separate account assets	$ 83,439	$ 81,690
Equity securities
Separate Account, Liability [Line Items]
Separate account assets	83,166	81,417
Fixed maturity securities
Separate Account, Liability [Line Items]
Separate account assets	264	259
Cash and cash equivalents
Separate Account, Liability [Line Items]
Separate account assets	5	7
Other assets
Separate Account, Liability [Line Items]
Separate account assets	$ 4	$ 7