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ALLOWANCE FOR LOAN AND LEASE LOSSES - Schedule of Allowance for Loan and Lease Losses (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Allowance for loan and lease losses, beginning balance | $ 1,747 | $ 922 | $ 178
Initial PCD ALLL | 0 | 220 | 272
Day 2 Provision for Loan and Lease Losses | 0 | 462 | 454
Provision (benefit) for loan and lease losses | 469 | 703 | 97
Total provision for loan and lease losses | 469 | 1,165 | 551
Charge-offs | (657) | (638) | (146)
Recoveries | 117 | 78 | 67
Allowance for loan and lease losses, ending balance | 1,676 | 1,747 | 922
Commercial |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Allowance for loan and lease losses, beginning balance | 1,126 | 789 | 80
Initial PCD ALLL | 0 | 14 | 258
Day 2 Provision for Loan and Lease Losses | 0 | 39 | 432
Provision (benefit) for loan and lease losses | 298 | 651 | 101
Total provision for loan and lease losses | 298 | 690 | 533
Charge-offs | (407) | (414) | (126)
Recoveries | 46 | 47 | 44
Allowance for loan and lease losses, ending balance | 1,063 | 1,126 | 789
Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Allowance for loan and lease losses, beginning balance | 166 | 133 | 98
Initial PCD ALLL | 0 | 3 | 14
Day 2 Provision for Loan and Lease Losses | 0 | 43 | 22
Provision (benefit) for loan and lease losses | 8 | 2 | (4)
Total provision for loan and lease losses | 8 | 45 | 18
Charge-offs | (30) | (28) | (20)
Recoveries | 14 | 13 | 23
Allowance for loan and lease losses, ending balance | 158 | 166 | 133
SVB |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Allowance for loan and lease losses, beginning balance | 455 | 0 | 0
Initial PCD ALLL | 0 | 203 | 0
Day 2 Provision for Loan and Lease Losses | 0 | 380 | 0
Provision (benefit) for loan and lease losses | 163 | 50 | 0
Total provision for loan and lease losses | 163 | 430 | 0
Charge-offs | (220) | (196) | 0
Recoveries | 57 | 18 | 0
Allowance for loan and lease losses, ending balance | $ 455 | $ 455 | $ 0

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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 Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. 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 (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. 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 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration. 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 19 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-19 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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