Segment Information - Schedule of Assets by Segment (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Segment Reporting [Line Items]
Total Assets	$ 358,359	$ 352,586
Operating Segments \| Retail Annuities
Segment Reporting [Line Items]
Total Assets	312,617	307,225
Operating Segments \| Closed Life and Annuity Blocks
Segment Reporting [Line Items]
Total Assets	26,023	26,988
Operating Segments \| Institutional Products
Segment Reporting [Line Items]
Total Assets	13,535	12,869
Corporate and Other
Segment Reporting [Line Items]
Total Assets	$ 6,184	$ 5,504

Amount of asset recognized for present right to economic benefit.

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+ Details

- Definition

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