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Allowance for Credit Losses - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Jan. 02, 2022 | Mar. 31, 2022 | Mar. 31, 2022 | Mar. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance for credit losses, beginning balance | $ 178 | $ 178 |  | $ 225
Initial PCD ACL |  |  | $ 284 |
Initial Non-PCD Provision |  |  | 454 |
Benefit for credit losses - loans and leases |  | (53) |  |
Total provision (benefit) for credit losses- loans and leases |  | 401 |  | (11)
charege-offs |  | (33) |  | (9)
Recoveries |  | 18 |  | 6
Other |  | 0 |  | 0
Allowance for credit losses, ending balance |  | 848 | 848 | 211
Allowance for credit loss prior to acquisition date | 243 |  |  |
Commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance for credit losses, beginning balance | 80 | 80 |  | 92
Initial PCD ACL |  |  | 270 |
Initial Non-PCD Provision |  |  | 432 |
Benefit for credit losses - loans and leases |  | (23) |  |
Total provision (benefit) for credit losses- loans and leases |  | 409 |  | (3)
charege-offs |  | (28) |  | (4)
Recoveries |  | 12 |  | 2
Other |  | 0 |  | 0
Allowance for credit losses, ending balance |  | 743 | 743 | 87
Consumer |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Allowance for credit losses, beginning balance | $ 98 | 98 |  | 133
Initial PCD ACL |  |  | 14 |
Initial Non-PCD Provision |  |  | 22 |
Benefit for credit losses - loans and leases |  | (30) |  |
Total provision (benefit) for credit losses- loans and leases |  | (8) |  | (8)
charege-offs |  | (5) |  | (5)
Recoveries |  | 6 |  | 4
Other |  | 0 |  | 0
Allowance for credit losses, ending balance |  | $ 105 | $ 105 | $ 124

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- Definition Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Other + References No definition available. + Details
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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, Purchased with Credit Deterioration, Allowance for Credit Loss Prior Acquisition Date + References No definition available. + Details
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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + 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 of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
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- Definition Amount of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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- Definition Amount of credit loss expense (reversal of expense) for financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(11)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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