Collateral posting requirements for clearing members and clearing houses

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- Definition

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- Definition

Variation Margin Adjustment

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Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

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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.

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Nominal or face amount used to calculate payments on the derivative asset.

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Nominal or face amount used to calculate payments on the derivative liability.

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Nominal or face amount used to calculate payment on derivative.

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Derivatives (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Derivatives (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Collateral required to be posted under agreements	$ 89		$ 93
Variation Margin Adjustment	100		98
Counterparty default losses on forward contracts	0	$ 0
Credit Derivatives [Line Items]
Commitments
Interest rate swaps
Credit Derivatives [Line Items]
Derivative asset, notional amount	4,400		4,500
Derivative liability, notional amount	4,500		4,500
Interest rate futures
Credit Derivatives [Line Items]
Derivative, notional amount	214		211
Mortgage-Backed Security
Credit Derivatives [Line Items]
Derivative, notional amount	33		34
Commitments To Originate Loans Held For Sale
Credit Derivatives [Line Items]
Commitments	70		39
Interest rate forward sales commitments
Credit Derivatives [Line Items]
Commitments	$ 91		$ 74