XML 147 R122.htm IDEA: XBRL DOCUMENT
v3.22.4

Business Segments and Revenue from Contracts with Customers - Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | $ 5,417 | $ 4,780 | $ 3,737
Revenue (reduction) from other sources | 1,719 | 1,484 | 1,873
Non-interest income (loss) | 7,136 | 6,264 | 5,610
Operating segments | Credit Card |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 4,573 | 3,880 | 3,062
Revenue (reduction) from other sources | 1,198 | 926 | 761
Non-interest income (loss) | 5,771 | 4,806 | 3,823
Operating segments | Consumer Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 485 | 513 | 436
Revenue (reduction) from other sources | (16) | 41 | 30
Non-interest income (loss) | 469 | 554 | 466
Operating segments | Commercial Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 361 | 388 | 242
Revenue (reduction) from other sources | 768 | 760 | 681
Non-interest income (loss) | 1,129 | 1,148 | 923
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | (2) | (1) | (3)
Revenue (reduction) from other sources | (231) | (243) | 401
Non-interest income (loss) | (233) | (244) | 398
Interchange fees, net |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 4,606 | 3,860 | 3,017
Customer reward expenses | 7,600 | 6,400 | 4,900
Interchange fees, net | Operating segments | Credit Card |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 4,178 | 3,497 | 2,747
Interchange fees, net | Operating segments | Consumer Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 320 | 267 | 209
Interchange fees, net | Operating segments | Commercial Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 109 | 96 | 63
Interchange fees, net | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | (1) | 0 | (2)
Service charges and other customer-related fees |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 327 | 457 | 362
Service charges and other customer-related fees | Operating segments | Credit Card |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 0 | 0 | 0
Service charges and other customer-related fees | Operating segments | Consumer Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 91 | 171 | 188
Service charges and other customer-related fees | Operating segments | Commercial Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 236 | 287 | 175
Service charges and other customer-related fees | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 0 | (1) | (1)
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 484 | 463 | 358
Other | Operating segments | Credit Card |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 395 | 383 | 315
Other | Operating segments | Consumer Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 74 | 75 | 39
Other | Operating segments | Commercial Banking |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | 16 | 5 | 4
Other | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total contract revenue | $ (1) | $ 0 | $ 0

X
- Definition Customer Reward Expenses + References No definition available. + Details
Name: | cof_CustomerRewardExpenses
Namespace Prefix: | cof_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Noninterest Income, Excluding Revenue From Contract With Customer + References No definition available. + Details
Name: | cof_NoninterestIncomeExcludingRevenueFromContractWithCustomer
Namespace Prefix: | cof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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 No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_NoninterestIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cof_CreditCardSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cof_ConsumerBankingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cof_CommercialBankingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cof_InterchangeFeesContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cof_ServiceChargesAndOtherCustomerFeesContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cof_OtherContractRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |