Fair value disclosures (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Level 3 \| Financial Products \| Nonrecurring basis
Assets measured on a nonrecurring basis at fair value
Loans Carried at Fair Value	$ 59	$ 55

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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