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Fair Value Measurements - Fair Value Option (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Fair Value, Option, Quantitative Disclosures [Line Items]
Fixed maturities, at fair value using the fair value option ("FVO Securities")	$ 280		$ 308
Changes in fair value of assets using fair value option	(4)	$ 4
Collateralized Loan Obligations [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fixed maturities, at fair value using the fair value option ("FVO Securities")	280		308
Fair Value, Option, Residual Interest of Securitizations	$ 195		$ 197

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- Definition

Fair Value, Option, Fixed Maturity Securities

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- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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