SECURITIES FINANCING ACTIVITIES - Schedule of Gross Amounts of Liabilities Associated with Securities Financing Activities by Remaining Contractual Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	$ 46,440	$ 39,855
Securities lending	11	1
Gross amounts of recognized liabilities	46,451	$ 39,856
Open and overnight
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	28,410
Securities lending	11
Gross amounts of recognized liabilities	28,421
Up to 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	6,894
Securities lending	0
Gross amounts of recognized liabilities	6,894
31-90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	3,628
Securities lending	0
Gross amounts of recognized liabilities	3,628
Greater than 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	7,508
Securities lending	0
Gross amounts of recognized liabilities	$ 7,508

Security Sold under Agreement to Repurchase, Gross Including Not Subject to Master Netting Arrangement

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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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Amount, before effects of master netting arrangements, of derivative liabilities, securities sold under agreements to repurchase and securities loaned. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

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- Definition

Amount, before effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

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