COMMITMENTS, GUARANTEES, PRODUCT WARRANTIES AND OTHER LOSS CONTINGENCIES - Bank BPH (Details) - Bank BPH - Bank BPH litigation - USD ($) $ in Millions	3 Months Ended
Jun. 30, 2023	Jun. 30, 2026	Dec. 31, 2025
Related Party Transaction [Line Items]
Litigation settlement costs	$ 1,014
Estimate loss		$ 1,814	$ 2,334

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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+ Details

- 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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+ Details