Investments - Schedule of Accrued Interest (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Accrued investment income	$ 567	$ 539
Mortgage loans
Debt Securities, Available-for-Sale [Line Items]
Accrued investment income	3	3
Bank loans, net
Debt Securities, Available-for-Sale [Line Items]
Accrued investment income	$ 3	$ 3

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