DERIVATIVES - Amounts Recorded in Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged items	$ (26)	$ (27)
Total debt securities available for sale, at fair value
Derivative [Line Items]
Carrying amount of hedged assets	410	0
Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged assets	(9)	0
Long-term borrowed funds
Derivative [Line Items]
Carrying amount of hedged liabilities	473	972
Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged items	$ (26)	$ (27)

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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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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