Investments - Amortized Cost of Mortgage Loans on Real Estate on Nonaccrual Status (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	$ 127	$ 96
Commercial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	10	4
Residential
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	$ 117	$ 92

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