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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
--- | --- | ---
Jan. 03, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance for loan and lease losses, beginning balance |  | $ 922 | $ 178 | $ 225
Initial PCD ALLL | $ 272 | 220 |  |
Day 2 provision for loan and lease losses |  | 462 | 454 | 0
Provision for credit losses - loans and leases |  | 703 | 97 |
(Benefit) for credit losses - loans and leases |  |  |  | (37)
Total provision for loan and lease losses |  | 1,165 | 551 | (37)
Charge-offs |  | (638) | (146) | (36)
Recoveries |  | 78 | 67 | 26
Allowance for loan and lease losses, ending balance |  | 1,747 | 922 | 178
Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance for loan and lease losses, beginning balance |  | 789 | 80 | 92
Initial PCD ALLL |  | 0 | 258 |
Day 2 provision for loan and lease losses |  | 0 | 432 |
Provision for credit losses - loans and leases |  | 541 | 101 |
(Benefit) for credit losses - loans and leases |  |  |  | (7)
Total provision for loan and lease losses |  | 541 | 533 |
Charge-offs |  | (328) | (126) | (18)
Recoveries |  | 44 | 44 | 13
Allowance for loan and lease losses, ending balance |  | 1,046 | 789 | 80
Consumer |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance for loan and lease losses, beginning balance |  | 133 | 98 | 133
Initial PCD ALLL |  | 0 | 14 |
Day 2 provision for loan and lease losses |  | 0 | 22 |
Provision for credit losses - loans and leases |  | 27 |  |
(Benefit) for credit losses - loans and leases |  |  | (4) | (30)
Total provision for loan and lease losses |  | 27 | 18 |
Charge-offs |  | (28) | (20) | (18)
Recoveries |  | 14 | 23 | 13
Allowance for loan and lease losses, ending balance |  | 146 | 133 | 98
SVB |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance for loan and lease losses, beginning balance |  | 0 | 0 | 0
Initial PCD ALLL |  | 220 | 0 |
Day 2 provision for loan and lease losses |  | 462 | 0 |
Provision for credit losses - loans and leases |  | 135 | 0 |
(Benefit) for credit losses - loans and leases |  |  |  | 0
Total provision for loan and lease losses |  | 597 | 0 |
Charge-offs |  | (282) | 0 | 0
Recoveries |  | 20 | 0 | 0
Allowance for loan and lease losses, ending balance |  | $ 555 | $ 0 | $ 0

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- Definition Financing Receivable, Credit Loss, Expense + References No definition available. + Details
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- Definition Financing Receivable, Credit Loss, Reversal + 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 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 A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + 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 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 + 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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