$COF
CAPITAL ONE FINANCIAL CORP Stock $cof

$cof Overview Financials Valuation SEC Filings Company Website

2020 Q1 Form 10-Q Financial Statement

#000092762820000173 Filed on May 01, 2020

Income Statement

Concept	2020 Q1	2019 Q1
Revenue	$7.249B	$7.083B
YoY Change	2.34%	2.52%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$302.0M	$303.0M
YoY Change	-0.33%	-0.98%
% of Gross Profit
Depreciation & Amortization	$893.0M	$704.0M
YoY Change	26.85%	28.0%
% of Gross Profit
Operating Expenses	$302.0M	$303.0M
YoY Change	-0.33%	-0.98%
Operating Profit
YoY Change
Interest Expense	$1.084B	$1.301B
YoY Change	-16.68%	41.57%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	-$1.903B	$1.719B
YoY Change	-210.7%	3.43%
Income Tax	-$563.0M	$309.0M
% Of Pretax Income		17.98%
Net Earnings	-$1.340B	$1.412B
YoY Change	-194.9%	4.9%
Net Earnings / Revenue	-18.49%	19.94%
Basic Earnings Per Share	-$3.10	$2.87
Diluted Earnings Per Share	-$3.10	$2.86
COMMON SHARES
Basic Shares Outstanding	457.6M shares	469.4M shares
Diluted Shares Outstanding	457.6M shares	471.6M shares

Balance Sheet

Concept	2020 Q1	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$25.30B	$19.44B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$4.336B	$4.205B
YoY Change	3.12%	3.7%
Goodwill	$14.65B	$14.55B
YoY Change	0.68%	0.07%
Intangibles	$156.0M	$223.0M
YoY Change	-30.04%	-41.01%
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$396.9B	$373.2B
YoY Change	6.35%	2.85%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$359.0M	$382.0M
YoY Change	-6.02%	8.22%
Accrued Expenses		$1.836B
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$6.399B	$335.0M
YoY Change	1810.15%	-48.93%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$359.0M	$2.218B
YoY Change	-83.81%	528.33%
LONG-TERM LIABILITIES
Long-Term Debt	$49.28B	$50.02B
YoY Change	-1.48%	-0.02%
Other Long-Term Liabilities	$14.32B	$12.03B
YoY Change	19.06%	2.26%
Total Long-Term Liabilities	$63.60B	$62.05B
YoY Change	2.5%	0.41%
TOTAL LIABILITIES
Total Short-Term Liabilities	$359.0M	$2.218B
Total Long-Term Liabilities	$63.60B	$62.05B
Total Liabilities	$340.0B	$319.7B
YoY Change	6.36%	1.93%
SHAREHOLDERS EQUITY
Retained Earnings	$36.55B	$37.03B
YoY Change	-1.29%	15.73%
Common Stock	$7.000M	$7.000M
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$56.83B	$53.48B
YoY Change
Total Liabilities & Shareholders Equity	$396.9B	$373.2B
YoY Change	6.35%	2.85%

Cashflow Statement

Concept	2020 Q1	2019 Q1
OPERATING ACTIVITIES
Net Income	-$1.340B	$1.412B
YoY Change	-194.9%	4.9%
Depreciation, Depletion And Amortization	$893.0M	$704.0M
YoY Change	26.85%	28.0%
Cash From Operating Activities	$5.409B	$4.881B
YoY Change	10.82%	203.73%
INVESTING ACTIVITIES
Capital Expenditures	$154.0M	$183.0M
YoY Change	-15.85%	-10.73%
Acquisitions
YoY Change
Other Investing Activities	$196.0M	$422.0M
YoY Change	-53.55%	317.82%
Cash From Investing Activities	$1.041B	$5.013B
YoY Change	-79.23%	635.04%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$323.0M	$13.00M
YoY Change	2384.62%	-94.2%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$5.101B	-$3.945B
YoY Change	-229.3%	69.75%
NET CHANGE
Cash From Operating Activities	$5.409B	$4.881B
Cash From Investing Activities	$1.041B	$5.013B
Cash From Financing Activities	$5.101B	-$3.945B
Net Change In Cash	$11.55B	$5.949B
YoY Change	94.17%	-17097.14%
FREE CASH FLOW
Cash From Operating Activities	$5.409B	$4.881B
Capital Expenditures	$154.0M	$183.0M
Free Cash Flow	$5.255B	$4.698B
YoY Change	11.86%	235.09%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020Q1	cof	Depository Share Percent Interestin Preferred Stock DepositorySharePercentInterestinPreferredStock	0.025
CY2019Q4	cof	Treasury Stock Par Or Stated Value Per Share TreasuryStockParOrStatedValuePerShare	0.01
CY2020Q1	cof	Treasury Stock Par Or Stated Value Per Share TreasuryStockParOrStatedValuePerShare	0.01
CY2020Q1	dei	Amendment Flag AmendmentFlag	false
CY2020Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2020Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000927628
CY2019Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	4400000000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	78600000000	USD
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2020Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	672969391	shares
CY2020Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	676170565	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	456562399	shares
CY2020Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	455310083	shares
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	1000000	USD
CY2019Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	251000000	USD
CY2020Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	1100000000	USD
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2020Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	4975000	shares
CY2020Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	5350000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	4975000	shares
CY2020Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	5350000	shares
CY2019Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	216406992	shares
CY2020Q1	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	220860482	shares
CY2019Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	1100000000	USD
CY2020Q1	dei	Document Type DocumentType	10-Q
CY2020Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2020Q1	dei	Document Period End Date DocumentPeriodEndDate	2020-03-31
CY2020Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	455310083	shares
CY2020Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	6542000000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	5791000000	USD
CY2019Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	6368000000	USD
CY2020Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5423000000	USD
CY2019Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1693000000	USD
CY2020Q1	dei	Entity File Number EntityFileNumber	001-13300
CY2020Q1	dei	Entity Registrant Name EntityRegistrantName	CAPITAL ONE FINANCIAL CORP
CY2020Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019Q1	us-gaap	Interest Expense InterestExpense	1301000000	USD
CY2020Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2020Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020Q1	dei	Entity Shell Company EntityShellCompany	false
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	6025000000	USD
CY2020Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	54-1719854
CY2020Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	1680 Capital One Drive,
CY2020Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	McLean,
CY2020Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	VA
CY2020Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	22102
CY2020Q1	dei	City Area Code CityAreaCode	703
CY2020Q1	dei	Local Phone Number LocalPhoneNumber	720-1000
CY2020Q1	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	530000000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	655000000	USD
CY2020Q1	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	37000000	USD
CY2019Q1	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	69000000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	7109000000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	7092000000	USD
CY2020Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	731000000	USD
CY2019Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	817000000	USD
CY2020Q1	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	99000000	USD
CY2019Q1	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	143000000	USD
CY2020Q1	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	239000000	USD
CY2019Q1	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	314000000	USD
CY2020Q1	cof	Interest Expense Other Borrowings InterestExpenseOtherBorrowings	15000000	USD
CY2019Q1	cof	Interest Expense Other Borrowings InterestExpenseOtherBorrowings	27000000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	1084000000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	602000000	USD
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	4098000000	USD
CY2020Q1	cof	Interchange Fees Net InterchangeFeesNet	752000000	USD
CY2019Q1	cof	Interchange Fees Net InterchangeFeesNet	758000000	USD
CY2019Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	30000000	USD
CY2020Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	483000000	USD
CY2019Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	157000000	USD
CY2019Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	464000000	USD
CY2020Q1	cof	Service Chargesand Other Customer Related Fees ServiceChargesandOtherCustomerRelatedFees	327000000	USD
CY2019Q1	cof	Service Chargesand Other Customer Related Fees ServiceChargesandOtherCustomerRelatedFees	353000000	USD
CY2020Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
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CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	1224000000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	1292000000	USD
CY2020Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1627000000	USD
CY2019Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1573000000	USD
CY2020Q1	us-gaap	Occupancy Net OccupancyNet	517000000	USD
CY2019Q1	us-gaap	Occupancy Net OccupancyNet	493000000	USD
CY2020Q1	us-gaap	Marketing Expense MarketingExpense	491000000	USD
CY2019Q1	us-gaap	Marketing Expense MarketingExpense	517000000	USD
CY2020Q1	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	287000000	USD
CY2019Q1	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	291000000	USD
CY2020Q1	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	302000000	USD
CY2019Q1	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	303000000	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	22000000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	3729000000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	3671000000	USD
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CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-563000000	USD
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CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1410000000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
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CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	1412000000	USD
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CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	1412000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	1224000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	292000000	USD
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CY2019Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	277000000	USD
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CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1191000000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2015000000	USD
CY2020Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	4545000000	USD
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CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	265809000000	USD
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CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	14073000000	USD
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CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	258601000000	USD
CY2020Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1056000000	USD
CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	400000000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4336000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4378000000	USD
CY2020Q1	us-gaap	Interest Receivable InterestReceivable	1687000000	USD
CY2019Q4	us-gaap	Interest Receivable InterestReceivable	1758000000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	14645000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	14653000000	USD
CY2020Q1	us-gaap	Other Assets OtherAssets	19514000000	USD
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CY2020Q1	us-gaap	Assets Assets	396878000000	USD
CY2019Q4	us-gaap	Assets Assets	390365000000	USD
CY2020Q1	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	359000000	USD
CY2019Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	439000000	USD
CY2020Q1	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	24547000000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	23488000000	USD
CY2020Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	245142000000	USD
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	239209000000	USD
CY2020Q1	us-gaap	Deposits Deposits	269689000000	USD
CY2019Q4	us-gaap	Deposits Deposits	262697000000	USD
CY2020Q1	us-gaap	Secured Debt SecuredDebt	17141000000	USD
CY2019Q4	us-gaap	Secured Debt SecuredDebt	17808000000	USD
CY2020Q1	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	399000000	USD
CY2019Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	314000000	USD
CY2020Q1	us-gaap	Unsecured Debt UnsecuredDebt	32049000000	USD
CY2019Q4	us-gaap	Unsecured Debt UnsecuredDebt	30472000000	USD
CY2020Q1	us-gaap	Other Borrowings OtherBorrowings	6092000000	USD
CY2019Q4	us-gaap	Other Borrowings OtherBorrowings	7103000000	USD
CY2020Q1	cof	Debt Excluding Secured Debt DebtExcludingSecuredDebt	38540000000	USD
CY2019Q4	cof	Debt Excluding Secured Debt DebtExcludingSecuredDebt	37889000000	USD
CY2020Q1	us-gaap	Other Liabilities OtherLiabilities	14319000000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	13521000000	USD
CY2020Q1	us-gaap	Liabilities Liabilities	340048000000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	332354000000	USD
CY2020Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	390365000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	58011000000	USD
CY2020Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-2192000000	USD
CY2020Q1	us-gaap	Common Stock Value CommonStockValue	7000000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	7000000	USD
CY2020Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	33450000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	32980000000	USD
CY2020Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	36552000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	40340000000	USD
CY2020Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3679000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1156000000	USD
CY2020Q1	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	16858000000	USD
CY2019Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	16472000000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	56830000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	58011000000	USD
CY2020Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	396878000000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1191000000	USD
CY2020Q1	us-gaap	Dividends Common Stock DividendsCommonStock	185000000	USD
CY2020Q1	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	55000000	USD
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	386000000	USD
CY2020Q1	cof	Stock Issued During Period Value New Issuesand Restricted Stock Netof Forfeitures StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures	63000000	USD
CY2020Q1	cof	Stock Issued During Period Value Stock Optionsand Warrants Exercisedand Restricted Stock Vesting StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting	20000000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1209000000	USD
CY2020Q1	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	875000000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	29000000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	56830000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	51668000000	USD
CY2019Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-11000000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2015000000	USD
CY2019Q1	us-gaap	Dividends Common Stock DividendsCommonStock	191000000	USD
CY2019Q1	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	52000000	USD
CY2019Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	65000000	USD
CY2019Q1	cof	Stock Issued During Period Value New Issuesand Restricted Stock Netof Forfeitures StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures	52000000	USD
CY2019Q1	cof	Stock Issued During Period Value Stock Optionsand Warrants Exercisedand Restricted Stock Vesting StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting	0	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	65000000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	53481000000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-1340000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1410000000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2020Q1	cof	Financing Receivable Percent Current FinancingReceivablePercentCurrent	0.968
CY2020Q1	us-gaap	Financing Receivable Percent Past Due1 FinancingReceivablePercentPastDue1	0.032
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-1340000000	USD
CY2020Q1	cof	Financing Receivable Percentageof Total Loan FinancingReceivablePercentageofTotalLoan	1.000
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	3074000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	1412000000	USD
CY2020Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5423000000	USD
CY2019Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1693000000	USD
CY2020Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	893000000	USD
CY2019Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	704000000	USD
CY2020Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-748000000	USD
CY2019Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	61000000	USD
CY2020Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2019Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	24000000	USD
CY2020Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	4000000	USD
CY2019Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	6000000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	24000000	USD
CY2019Q1	us-gaap	Share Based Compensation ShareBasedCompensation	72000000	USD
CY2020Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	2258000000	USD
CY2019Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	1877000000	USD
CY2020Q1	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	1507000000	USD
CY2019Q1	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	2467000000	USD
CY2020Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-71000000	USD
CY2019Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1000000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1325000000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-899000000	USD
CY2020Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-80000000	USD
CY2019Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-76000000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	595000000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-443000000	USD
CY2020Q1	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	1000000	USD
CY2019Q1	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5409000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4881000000	USD
CY2020Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	3927000000	USD
CY2019Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2879000000	USD
CY2020Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3822000000	USD
CY2019Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1526000000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	144000000	USD
CY2020Q1	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
CY2019Q1	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	365000000	USD
CY2020Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2019Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	619000000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	686000000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	2969000000	USD
CY2020Q1	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	666000000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1248000000	USD
CY2019Q1	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	674000000	USD
CY2020Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	154000000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	183000000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	196000000	USD
CY2019Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	422000000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1041000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	5013000000	USD
CY2020Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	6702000000	USD
CY2019Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	5243000000	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1496000000	USD
CY2020Q1	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	2208000000	USD
CY2019Q1	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	589000000	USD
CY2020Q1	cof	Proceedsfrom Issuanceof Unsecured Debtand Long Term Fhlb Advances Netof Issuance Cost ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost	1995000000	USD
CY2019Q1	cof	Proceedsfrom Issuanceof Unsecured Debtand Long Term Fhlb Advances Netof Issuance Cost ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost	1243000000	USD
CY2020Q1	cof	Repaymentsof Unsecured Debtand Long Term Fhlb Advances RepaymentsofUnsecuredDebtandLongTermFHLBAdvances	1500000000	USD
CY2019Q1	cof	Repaymentsof Unsecured Debtand Long Term Fhlb Advances RepaymentsofUnsecuredDebtandLongTermFHLBAdvances	2000000000	USD
CY2020Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-927000000	USD
CY2019Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-9082000000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	63000000	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	52000000	USD
CY2020Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	185000000	USD
CY2019Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	191000000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	1209000000	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2020Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	55000000	USD
CY2019Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	52000000	USD
CY2020Q1	cof	Payments For Redemption Of Preferred Stock PaymentsForRedemptionOfPreferredStock	875000000	USD
CY2019Q1	cof	Payments For Redemption Of Preferred Stock PaymentsForRedemptionOfPreferredStock	0	USD
CY2020Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	386000000	USD
CY2019Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	65000000	USD
CY2020Q1	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	20000000	USD
CY2019Q1	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	5101000000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-3945000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	11551000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	5949000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	13749000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	13489000000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25300000000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	19438000000	USD
CY2020Q1	cof	Transfer Of To Portfolio Loans And Leases To From Held For Sale TransferOfToPortfolioLoansAndLeasesToFromHeldForSale	-73000000	USD
CY2019Q1	cof	Transfer Of To Portfolio Loans And Leases To From Held For Sale TransferOfToPortfolioLoansAndLeasesToFromHeldForSale	358000000	USD
CY2020Q1	us-gaap	Interest Paid Net InterestPaidNet	1157000000	USD
CY2019Q1	us-gaap	Interest Paid Net InterestPaidNet	1248000000	USD
CY2020Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	64000000	USD
CY2019Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	70000000	USD
CY2020Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	Segment
CY2020Q1	us-gaap	Use Of Estimates UseOfEstimates	The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and in the related disclosures. These estimates are based on information available as of the date of the consolidated financial statements. While management makes its best judgments, actual amounts or results could differ from these estimates. In the opinion of management, all normal, recurring adjustments have been included for a fair statement of this interim financial information.<span style="font-family:inherit;font-size:10pt;font-style:italic;"> </span><span style="font-family:inherit;font-size:10pt;">Certain prior period amounts have been reclassified to conform to the current period presentation.</span>
CY2020Q1	cof	Threshold Period Past Duefor Delinquency Statusof Financing Receivables ThresholdPeriodPastDueforDelinquencyStatusofFinancingReceivables	P30D
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	66260000000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	78600000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Change In Present Value Interest Income DebtSecuritiesAvailableForSaleChangeInPresentValueInterestIncome	244000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	332000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	4263000000	USD
CY2020Q1	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	1000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	79213000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	7574000000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	3100000000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	78600000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	5000000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2980000000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	152000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	81423000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	77984000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1561000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	4087000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	59000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	6199000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	86000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	10286000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	145000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	15882000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	120000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	12252000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	212000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	28134000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	332000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	590	Security
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	505000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	4284000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	7747000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	68887000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	81423000000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	503000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity Rolling Within One Year Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingWithinOneYearWeightedAverageYield	0.0149
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity Rolling After One Through Five Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfterOneThroughFiveYearsWeightedAverageYield	0.0210
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity Rolling After Five Through Ten Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfterFiveThroughTenYearsWeightedAverageYield	0.0218
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity Rolling After10 Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfter10YearsWeightedAverageYield	0.0282
CY2020Q1	cof	Debt Securities Available For Sale Weighted Average Yield DebtSecuritiesAvailableForSaleWeightedAverageYield	0.0271
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	144000000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	1000000	USD
CY2019Q1	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	24000000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	255736000000	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	273000000	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	30025	Contract
CY2020Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	92000000	USD
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CY2020Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	923000000	USD
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CY2020Q1	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	337000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	178000000	USD
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CY2020Q1	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	155000000	USD
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CY2020Q1	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	4400000000	USD
CY2020Q1	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	1400000000	USD
CY2019Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	1500000000	USD
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CY2020Q1	us-gaap	Goodwill Goodwill	14645000000	USD
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CY2020Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2025000000	USD
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CY2020Q1	cof	Servicing Assetat Amortized Cost Accumulated Amortization ServicingAssetatAmortizedCostAccumulatedAmortization	271000000	USD
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CY2019Q4	us-gaap	Goodwill Goodwill	14653000000	USD
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CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	239209000000	USD
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CY2020Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	245142000000	USD
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CY2020Q1	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	49282000000	USD
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CY2020Q1	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	3567000000	USD
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CY2020Q1	cof	Amortized Costof Closed Prepayment Assets AmortizedCostofClosedPrepaymentAssets	1900000000	USD
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CY2020Q1	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	106000000	USD
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CY2019Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	176000000	USD
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CY2019Q4	cof	Repurchase Agreement Collateral Right To Reclaim Cash Offset RepurchaseAgreementCollateralRightToReclaimCashOffset	0	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	314000000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	314000000	USD
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CY2020Q1	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	2700000000	USD
CY2020Q1	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1200000000	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	954000000	USD
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CY2020Q1	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	239000000	USD
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CY2019Q1	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	314000000	USD
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CY2020Q1	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-556000000	USD
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CY2020Q1	us-gaap	Preferred Stock Including Additional Paid In Capital Net Of Discount PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount	5209000000	USD
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CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1263000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	450000000	USD
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CY2020Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent	1808000000	USD
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CY2020Q1	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	46000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-67000000	USD
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CY2019Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	30000000	USD
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CY2020Q1	cof	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentTaxPortionAttributableToParent	0	USD
CY2020Q1	cof	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentNetOfTaxPortionAttributableToParent	0	USD
CY2019Q1	cof	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentBeforeTaxPortionAttributableToParent	7000000	USD
CY2019Q1	cof	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentTaxPortionAttributableToParent	1000000	USD
CY2019Q1	cof	Other Comprehensive Income Loss Securities Transferred To Held To Maturity Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentNetOfTaxPortionAttributableToParent	6000000	USD
CY2020Q1	cof	Other Comprehensive Income Loss Before Tax Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxAttributableToParent	0	USD
CY2020Q1	cof	Other Comprehensive Income Loss Other Tax Attributable To Parent OtherComprehensiveIncomeLossOtherTaxAttributableToParent	0	USD
CY2020Q1	cof	Other Comprehensive Income Other Net Of Tax Attributable To Parent OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent	0	USD
CY2019Q1	cof	Other Comprehensive Income Loss Before Tax Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxAttributableToParent	-2000000	USD
CY2019Q1	cof	Other Comprehensive Income Loss Other Tax Attributable To Parent OtherComprehensiveIncomeLossOtherTaxAttributableToParent	0	USD
CY2019Q1	cof	Other Comprehensive Income Other Net Of Tax Attributable To Parent OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent	-2000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	3397000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	866000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2531000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	773000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	170000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	603000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-1340000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1410000000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-1340000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	1412000000	USD
CY2020Q1	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	3000000	USD
CY2019Q1	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	12000000	USD
CY2020Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	55000000	USD
CY2019Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	52000000	USD
CY2020Q1	cof	Issuance Cost For Preferred Stock Redeemed IssuanceCostForPreferredStockRedeemed	22000000	USD
CY2019Q1	cof	Issuance Cost For Preferred Stock Redeemed IssuanceCostForPreferredStockRedeemed	0	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1420000000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1348000000	USD
CY2019Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1100000	shares
CY2019Q4	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	12000000	USD
CY2020Q1	cof	Fair Value Rmbs Cumulative Effectsfromthe Adoptionofthe Cecl Standard FairValueRMBSCumulativeEffectsfromtheAdoptionoftheCECLStandard	4000000	USD
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	0.0	shares
CY2019Q1	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1100000	shares
CY2020Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0.0	shares
CY2019Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2200000	shares
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.87
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	457600000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	471600000	shares
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-3.10
CY2020Q1	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	19000000	USD
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.10
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.86
CY2020Q1	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	3567000000	USD
CY2020Q1	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	3567000000	USD
CY2020Q1	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1127000000	USD
CY2020Q1	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1127000000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	633000000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	633000000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	523000000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	523000000	USD
CY2020Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	Segment
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	6025000000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	1224000000	USD
CY2020Q1	us-gaap	Revenues Revenues	7249000000	USD
CY2020Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5423000000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	3729000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-1903000000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-563000000	USD
CY2020Q1	cof	Noninterest Income Excluding Revenuefrom Contractwith Customer NoninterestIncomeExcludingRevenuefromContractwithCustomer	287000000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-1340000000	USD
CY2020Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	262990000000	USD
CY2020Q1	us-gaap	Deposits Deposits	269689000000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	5791000000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	1292000000	USD
CY2019Q1	us-gaap	Revenues Revenues	7083000000	USD
CY2019Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1693000000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	3671000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1719000000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	309000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1410000000	USD
CY2019Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	240273000000	USD
CY2019Q1	us-gaap	Deposits Deposits	255107000000	USD
CY2020Q1	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	389000000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	937000000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	1224000000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	894000000	USD
CY2019Q1	cof	Noninterest Income Excluding Revenuefrom Contractwith Customer NoninterestIncomeExcludingRevenuefromContractwithCustomer	398000000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	1292000000	USD
CY2020Q1	cof	Letterof Credit Issued Contractual Amountand Unused Commitmentto Extend Credit LetterofCreditIssuedContractualAmountandUnusedCommitmenttoExtendCredit	401337000000	USD
CY2019Q4	cof	Letterof Credit Issued Contractual Amountand Unused Commitmentto Extend Credit LetterofCreditIssuedContractualAmountandUnusedCommitmenttoExtendCredit	401474000000	USD
CY2020Q1	cof	Cff Balance Sheet Lending Commitment Carrying Value CffBalanceSheetLendingCommitmentCarryingValue	202000000	USD
CY2019Q4	cof	Cff Balance Sheet Lending Commitment Carrying Value CffBalanceSheetLendingCommitmentCarryingValue	137000000	USD
CY2020Q1	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	1200000000	USD
CY2020Q1	cof	Numberof Consumer Class Action Cases Filedfor Cybersecurity Incident NumberofConsumerClassActionCasesFiledforCybersecurityIncident	73	claim

Files In Submission

Name	View Source	Status
0000927628-20-000173-index-headers.html	Edgar Link	pending
0000927628-20-000173-index.html	Edgar Link	pending
0000927628-20-000173.txt	Edgar Link	pending
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cof-03312020x10q.htm	Edgar Link	pending
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cof-03312020x10q_htm.xml	Edgar Link	completed
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cof-20200331_cal.xml	Edgar Link	unprocessable
cof-20200331_def.xml	Edgar Link	unprocessable
cof-20200331_lab.xml	Edgar Link	unprocessable
cof-20200331_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
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CAPITAL ONE FINANCIAL CORP Stock $cof

2020 Q1 Form 10-Q Financial Statement

#000092762820000173 Filed on May 01, 2020

Income Statement

Balance Sheet

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Facts In Submission

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$COF CAPITAL ONE FINANCIAL CORP Stock $cof

2020 Q1 Form 10-Q Financial Statement

#000092762820000173 Filed on May 01, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COF
CAPITAL ONE FINANCIAL CORP Stock $cof