Investments - Investments - Accrued Interest Receivable on Fixed Maturities, AFS and Mortgage Loans (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Securities [Member]
Schedule of Investments [Line Items]
Interest Receivable	$ 369	$ 338
Mortgages [Member]
Schedule of Investments [Line Items]
Interest Receivable	$ 19	$ 18

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details