ALLOWANCE FOR LOAN AND LEASE LOSSES - Schedule of Components of Credit Losses (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Receivables [Abstract]
Day 2 Provision for Loan and Lease Losses	$ 0	$ 462	$ 454
Provision for loan and lease losses	469	703	97
Total provision for loan and lease losses	469	1,165	551
Day 2 Provision for Off-Balance Sheet Credit Exposure	0	254	59
(Benefit) provision from off-balance sheet credit exposure	(38)	(44)	35
Total (benefit) provision for off-balance sheet credit exposure	(38)	210	94
Provision for credit losses	$ 431	$ 1,375	$ 645

Credit Loss Expense (Reversal)

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- Definition

Financing Receivable, Credit Loss, Expense

+ References

No definition available.

+ Details

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- Definition

Financing Receivable, Excluding Accrued Interest, Purchased without Credit Deterioration, Allowance for Credit Loss at Acquisition Date

+ References

No definition available.

+ Details

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- Definition

Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal), Acquired In Acquisition

+ References

No definition available.

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- Definition

Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal), Excluding Amount Acquired In Acquisition

+ References

No definition available.

+ Details

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

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- References

No definition available.

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