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BORROWINGS - Narrative (Detail) - USD ($) $ in Billions	Sep. 30, 2025	Dec. 31, 2024
Federal funds purchased
Debt Instrument [Line Items]
Aggregate availability under federal funds line	$ 1.6	$ 1.7

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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.

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