Commitments, Guarantees, and Contingent Liabilities (Narrative) (Details) $ in Millions	3 Months Ended
Mar. 31, 2023 USD ($) case lawsuit
Guarantor Obligations [Line Items]
Number of civil cases	2
Loss contingency, new claims filed, number	5
Loss contingency, claims dismissed, number	4
Number of class action lawsuits \| lawsuit	2
Minimum
Guarantor Obligations [Line Items]
Estimate of possible losses \| $	$ 0
Maximum
Guarantor Obligations [Line Items]
Estimate of possible losses \| $	$ 5

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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Number of claims dismissed.

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