XML 92 R70.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Loans - Credit Card Delinquency Status (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total | $ 327,775 | $ 320,472
Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 161,927 | 154,091
Revolving Loans Converted to Term | 581 | 456
Total | 162,508 | 154,547
Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 155,088 | 147,254
Revolving Loans Converted to Term | 530 | 412
Total | 155,618 | 147,666
International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 6,839 | 6,837
Revolving Loans Converted to Term | 51 | 44
Total | 6,890 | 6,881
Current | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 148,112 | 140,521
Revolving Loans Converted to Term | 453 | 339
Total | 148,565 | 140,860
Current | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 6,533 | 6,521
Revolving Loans Converted to Term | 37 | 31
Total | 6,570 | 6,552
30-59 days | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 1,944 | 1,940
Revolving Loans Converted to Term | 29 | 28
Total | 1,973 | 1,968
30-59 days | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 102 | 112
Revolving Loans Converted to Term | 5 | 4
Total | 107 | 116
60-89 days | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 1,483 | 1,454
Revolving Loans Converted to Term | 20 | 17
Total | 1,503 | 1,471
60-89 days | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 69 | 72
Revolving Loans Converted to Term | 3 | 4
Total | 72 | 76
Greater than 90 days | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 3,549 | 3,339
Revolving Loans Converted to Term | 28 | 28
Total | 3,577 | 3,367
Greater than 90 days | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 135 | 132
Revolving Loans Converted to Term | 6 | 5
Total | $ 141 | $ 137

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://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of 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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: 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 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_GeographicDistributionAxis=us-gaap_GeographicDistributionDomesticMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GeographicDistributionAxis=us-gaap_GeographicDistributionForeignMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=cof_FinancialAssetCurrentAndLessThan30DaysPastDueMember
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: |