DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Instruments Fair Value Hedges (Details) - Qualifying Hedges - Interest rate contracts - Fair Value Hedges - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | ||
| Net gain (loss) on fair value hedges | $ 0 | $ 1 |
| Deposits | ||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | ||
| Recognized on derivatives | 0 | 0 |
| Recognized on hedged item | 0 | 0 |
| Borrowings | ||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | ||
| Recognized on derivatives | (8) | 0 |
| Recognized on hedged item | $ 8 | $ 1 |
| X | ||||||||||
- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|