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Allowance for Credit Losses and Reserve for Unfunded Lending Commitments - Allowance for Credit Losses and Reserve for Unfunded Lending Commitments Activity (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | $ 13,240 |
Provision for credit losses | 2,795 | $ 677
Balance at the end of the period | 14,318 |
Financing Receivable Allowance For Credit Loss Translation Adjustments And Purchase Credit Deteriorated Loans | 32 |
Allowance for credit losses |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 13,240 | 11,430
Financing Receivable, Allowance for Credit Loss, Writeoff | (2,243) | (1,321)
Recoveries | 546 | 554
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery | (1,697) | (767)
Provision for credit losses | 2,802 | 648
Allowance build (release) for credit losses | 1,105 | (119)
Other changes | 36 | (3)
Balance at the end of the period | 14,318 | 11,308
Reserve for unfunded lending commitments |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 218 | 165
Provision for credit losses | (7) | 35
Balance at the end of the period | 211 | 200
Combined allowance and reserve |  |
Allowance for Credit Losses [Roll Forward] |  |
Balance at the end of the period | 14,529 | 11,508
Credit Card | Allowance for credit losses |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 9,545 | 8,345
Financing Receivable, Allowance for Credit Loss, Writeoff | (1,688) | (955)
Recoveries | 319 | 348
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery | (1,369) | (607)
Provision for credit losses | 2,261 | 545
Allowance build (release) for credit losses | 892 | (62)
Other changes | 36 | (3)
Balance at the end of the period | 10,410 | 8,280
Credit Card | Reserve for unfunded lending commitments |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 0 | 0
Provision for credit losses | 0 | 0
Balance at the end of the period | 0 | 0
Credit Card | Combined allowance and reserve |  |
Allowance for Credit Losses [Roll Forward] |  |
Balance at the end of the period | 10,410 | 8,280
Consumer Banking | Allowance for credit losses |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 2,237 | 1,918
Financing Receivable, Allowance for Credit Loss, Writeoff | (531) | (349)
Recoveries | 224 | 203
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery | (307) | (146)
Provision for credit losses | 275 | 130
Allowance build (release) for credit losses | (32) | (16)
Other changes | 0 | 0
Balance at the end of the period | 2,205 | 1,902
Consumer Banking | Reserve for unfunded lending commitments |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 0 | 0
Provision for credit losses | 0 | 0
Balance at the end of the period | 0 | 0
Consumer Banking | Combined allowance and reserve |  |
Allowance for Credit Losses [Roll Forward] |  |
Balance at the end of the period | 2,205 | 1,902
Commercial Banking | Allowance for credit losses |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 1,458 | 1,167
Financing Receivable, Allowance for Credit Loss, Writeoff | (24) | (17)
Recoveries | 3 | 3
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery | (21) | (14)
Provision for credit losses | 266 | (27)
Allowance build (release) for credit losses | 245 | (41)
Other changes | 0 | 0
Balance at the end of the period | 1,703 | 1,126
Commercial Banking | Reserve for unfunded lending commitments |  |
Allowance for Credit Losses [Roll Forward] |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 218 | 165
Provision for credit losses | (7) | 35
Balance at the end of the period | 211 | 200
Commercial Banking | Combined allowance and reserve |  |
Allowance for Credit Losses [Roll Forward] |  |
Balance at the end of the period | $ 1,914 | $ 1,326

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- Definition Financing Receivable, Allowance For Credit Loss, Adjustments, Other + References No definition available. + Details
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- Definition Financing Receivable Allowance For Credit Loss Translation Adjustments And Purchase Credit Deteriorated Loans + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (4) + Details
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- Definition Amount of increase (decrease) in allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + 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 https://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 https://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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + 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 https://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 https://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 https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + 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 https://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 https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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