Investments (Securities Lending and Repurchase Agreements) (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Securities Financing Transaction [Line Items]
Cash collateral on deposit from counterparties	$ 12,520	$ 11,404
Reinvestment portfolio - estimated fair value	12,485	11,202
Estimated fair value
Securities Financing Transaction [Line Items]
Securities loaned	12,257	11,119
Securities Sold under Agreements to Repurchase	2,995	3,019
Repurchase Agreements
Securities Financing Transaction [Line Items]
Cash collateral on deposit from counterparties	2,925	2,975
Reinvestment portfolio - estimated fair value	$ 2,909	$ 2,925

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.

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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+ Details