Investments (Securities Lending) (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Securities Financing Transaction [Line Items] | ||
| Cash collateral received from counterparties | $ 3,323 | $ 3,225 |
| Reinvestment portfolio — estimated fair value | 3,449 | 3,352 |
| Amortized cost | ||
| Securities Financing Transaction [Line Items] | ||
| Securities on loan | 3,648 | 3,550 |
| Estimated fair value | ||
| Securities Financing Transaction [Line Items] | ||
| Securities on loan | $ 3,213 | $ 3,141 |
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- Definition This element represents the estimated fair value of the securities lending reinvestment portfolio. No definition available.
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after the effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented. No definition available.
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