Related Parties - Schedule of Interest Income (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Related Party Transaction [Line Items]
Interest income	$ 1	$ 2	$ 3	$ 6
Related Party
Related Party Transaction [Line Items]
Interest income	$ 0	$ 1	$ 0	$ 2

Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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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.

+ References

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+ Details