BORROWINGS - SCHEDULE OF SHORT-TERM DEBT (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Short-term Debt [Line Items]
Short-term borrowings	$ 652	$ 334
Federal funds purchased and securities sold under agreements to repurchase
Short-term Debt [Line Items]
Short-term borrowings	392	320
Other borrowings
Short-term Debt [Line Items]
Short-term borrowings	$ 260	$ 14

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant