XML 63 R52.htm IDEA: XBRL DOCUMENT
v3.25.1

Loans - FDM Disclosure - Modification to Borrowers (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Mar. 31, 2024
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | $ 3,071 | $ 3,032
Commitments to lend on loans modified in TDRs | 225 | 190
Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 2,584 | 2,493
30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 171 | 170
60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 144 | 148
Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 172 | 221
Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 487 | 539
Credit Card: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 679 | 752
Credit Card: | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 459 | 460
Credit Card: | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 62 | 77
Credit Card: | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 48 | 66
Credit Card: | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 110 | 149
Credit Card: | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 220 | 292
Credit Card: | Domestic Card |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 552 | 646
Credit Card: | Domestic Card | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 388 | 407
Credit Card: | Domestic Card | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 51 | 67
Credit Card: | Domestic Card | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 38 | 56
Credit Card: | Domestic Card | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 75 | 116
Credit Card: | Domestic Card | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 164 | 239
Credit Card: | International card businesses |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 127 | 106
Credit Card: | International card businesses | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 71 | 53
Credit Card: | International card businesses | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 11 | 10
Credit Card: | International card businesses | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 10 | 10
Credit Card: | International card businesses | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 35 | 33
Credit Card: | International card businesses | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 56 | 53
Consumer Banking: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 770 | 802
Consumer Banking: | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 614 | 635
Consumer Banking: | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 89 | 93
Consumer Banking: | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 48 | 55
Consumer Banking: | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 19 | 19
Consumer Banking: | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 156 | 167
Consumer Banking: | Auto |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 763 | 792
Consumer Banking: | Auto | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 608 | 626
Consumer Banking: | Auto | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 89 | 93
Consumer Banking: | Auto | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 48 | 54
Consumer Banking: | Auto | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 18 | 19
Consumer Banking: | Auto | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 155 | 166
Consumer Banking: | Retail banking |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 7 | 10
Consumer Banking: | Retail banking | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 6 | 9
Consumer Banking: | Retail banking | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 0
Consumer Banking: | Retail banking | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 1
Consumer Banking: | Retail banking | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1 | 0
Consumer Banking: | Retail banking | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1 | 1
Commercial Banking: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1,622 | 1,478
Commercial Banking: | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1,511 | 1,398
Commercial Banking: | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 20 | 0
Commercial Banking: | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 48 | 27
Commercial Banking: | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 43 | 53
Commercial Banking: | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 111 | 80
Commercial Banking: | Commercial and multifamily real estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 631 | 578
Commercial Banking: | Commercial and multifamily real estate | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 631 | 556
Commercial Banking: | Commercial and multifamily real estate | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 0
Commercial Banking: | Commercial and multifamily real estate | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 0
Commercial Banking: | Commercial and multifamily real estate | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 22
Commercial Banking: | Commercial and multifamily real estate | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 22
Commercial Banking: | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 991 | 900
Commercial Banking: | Commercial and industrial | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 880 | 842
Commercial Banking: | Commercial and industrial | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 20 | 0
Commercial Banking: | Commercial and industrial | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 48 | 27
Commercial Banking: | Commercial and industrial | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 43 | 31
Commercial Banking: | Commercial and industrial | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | $ 111 | $ 58

X
- Definition Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months + References No definition available. + Details
Name: | cof_FinancingReceivableExcludingAccruedInterestModifiedAfter12Months
Namespace Prefix: | cof_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-34 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-33 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of commitment to lend additional funds to debtor experiencing financial difficulty for which creditor has modified terms of financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481746/310-40-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 36 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-36 + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=cof_CreditCardPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cof_DomesticCardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cof_InternationalCardBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_AutomobileLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cof_RetailBankingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cof_CommercialAndMultifamilyRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cof_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |