Investments (Mortgage Loans in Nonaccrual Status by Portfolio Segment) (Details) - Mortgage Loans - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Nonaccrual [Line Items]
Financing receivable in nonaccrual status	$ 280	$ 263
Commercial
Financing Receivable, Nonaccrual [Line Items]
Financing receivable in nonaccrual status	162	120
Agricultural
Financing Receivable, Nonaccrual [Line Items]
Financing receivable in nonaccrual status	9	25
Residential
Financing Receivable, Nonaccrual [Line Items]
Financing receivable in nonaccrual status	$ 109	$ 118

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