XML 97 R67.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Loans - Credit Card Delinquency Status (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Total | $ 320,472 | $ 312,331
Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 154,091 | 137,394
Revolving Loans Converted to Term | 456 | 336
Total | 154,547 | 137,730
Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 147,254 | 131,284
Revolving Loans Converted to Term | 412 | 297
Total | 147,666 | 131,581
International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 6,837 | 6,110
Revolving Loans Converted to Term | 44 | 39
Total | 6,881 | 6,149
Current | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 140,521 | 126,811
Revolving Loans Converted to Term | 339 | 255
Total | 140,860 | 127,066
Current | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 6,521 | 5,866
Revolving Loans Converted to Term | 31 | 29
Total | 6,552 | 5,895
30-59 days | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 1,940 | 1,388
Revolving Loans Converted to Term | 28 | 17
Total | 1,968 | 1,405
30-59 days | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 112 | 83
Revolving Loans Converted to Term | 4 | 3
Total | 116 | 86
60-89 days | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 1,454 | 964
Revolving Loans Converted to Term | 17 | 11
Total | 1,471 | 975
60-89 days | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 72 | 55
Revolving Loans Converted to Term | 4 | 3
Total | 76 | 58
Greater than 90 days | Domestic credit card: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 3,339 | 2,121
Revolving Loans Converted to Term | 28 | 14
Total | 3,367 | 2,135
Greater than 90 days | International card businesses: | Credit Card: |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Revolving Loans | 132 | 106
Revolving Loans Converted to Term | 5 | 4
Total | $ 137 | $ 110

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/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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + 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: |