Investments - Mortgage Loans (Details) - Commercial Real Estate - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Mortgage Loans on Real Estate [Line Items]
New mortgage loans	$ 48	$ 125	$ 145	$ 262
Mortgage loans fully repaid	28	33	92	67
Mortgage loans foreclosed	$ 0	$ 0	$ 0	$ 0

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