$COF
CAPITAL ONE FINANCIAL CORP Stock $cof

$cof Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000092762823000296 Filed on November 02, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue		$9.366B
YoY Change		6.37%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$344.0M
YoY Change		-1.43%
% of Gross Profit
Depreciation & Amortization	$798.0M	$852.0M
YoY Change	-5.34%	14.52%
% of Gross Profit
Operating Expenses		$344.0M
YoY Change		-1.43%
Operating Profit
YoY Change
Interest Expense		$3.450B
YoY Change		188.22%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$932.0M	$2.222B
YoY Change	-39.64%	1.6%
Income Tax	$226.0M	$432.0M
% Of Pretax Income	24.25%	19.44%
Net Earnings	$639.0M	$1.790B
YoY Change	-44.96%	5.67%
Net Earnings / Revenue		19.11%
Basic Earnings Per Share		$4.46
Diluted Earnings Per Share	$1.67	$4.45
COMMON SHARES
Basic Shares Outstanding	380.8M shares	382.5M shares
Diluted Shares Outstanding		383.3M shares

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$43.76B	$45.30B
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	$4.375B	$4.378B
YoY Change	0.55%	2.65%
Goodwill	$15.07B	$15.05B
YoY Change	1.95%	1.88%
Intangibles	$310.0M	$332.0M
YoY Change	94.97%	81.42%
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	$478.5B	$471.4B
YoY Change	5.1%	6.12%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$649.0M	$685.0M
YoY Change	23.15%	58.2%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$538.0M	$522.0M
YoY Change	-39.07%	-1.14%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.187B	$1.207B
YoY Change	125.24%	178.75%
LONG-TERM LIABILITIES
Long-Term Debt	$49.29B	$48.73B
YoY Change	3.12%	4.69%
Other Long-Term Liabilities	$21.46B	$21.82B
YoY Change	5.01%	3.25%
Total Long-Term Liabilities	$70.75B	$70.55B
YoY Change	3.69%	4.24%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.187B	$1.207B
Total Long-Term Liabilities	$70.75B	$70.55B
Total Liabilities	$420.4B	$417.8B
YoY Change	4.4%	6.2%
SHAREHOLDERS EQUITY
Retained Earnings	$60.95B	$60.53B
YoY Change	6.58%	7.63%
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	$58.09B	$53.67B
YoY Change
Total Liabilities & Shareholders Equity	$478.5B	$471.4B
YoY Change	5.1%	6.12%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	$639.0M	$1.790B
YoY Change	-44.96%	5.67%
Depreciation, Depletion And Amortization	$798.0M	$852.0M
YoY Change	-5.34%	14.52%
Cash From Operating Activities	$7.100B	$7.129B
YoY Change	-12.96%	156.72%
INVESTING ACTIVITIES
Capital Expenditures	$261.0M	$259.0M
YoY Change	-10.0%	-217.19%
Acquisitions
YoY Change
Other Investing Activities	-$9.429B	-$4.812B
YoY Change	-15.49%	-13.58%
Cash From Investing Activities	-$9.690B	-$5.071B
YoY Change	-15.35%	-12.4%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.041B	1.198B
YoY Change	-88.75%	-80.21%
NET CHANGE
Cash From Operating Activities	7.100B	7.129B
Cash From Investing Activities	-9.690B	-5.071B
Cash From Financing Activities	1.041B	1.198B
Net Change In Cash	-1.549B	3.256B
YoY Change	-125.97%	7.07%
FREE CASH FLOW
Cash From Operating Activities	$7.100B	$7.129B
Capital Expenditures	$261.0M	$259.0M
Free Cash Flow	$6.839B	$6.870B
YoY Change	-13.07%	129.15%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	27476000000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	20550000000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	499000000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1881000000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1336000000	usd
CY2022Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	123000000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1436000000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	193000000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	8200000000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	30793000000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	22079000000	usd
CY2022Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	689000000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6744000000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1200000000	usd
CY2022Q3	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	120000000	usd
	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	696000000	usd
	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	214000000	usd
CY2022Q3	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	319000000	usd
	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	1596000000	usd
	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	644000000	usd
CY2022Q3	cof	Interest Expense Other Borrowings InterestExpenseOtherBorrowings	69000000	usd
	cof	Interchange Fees Net InterchangeFeesNet	3429000000	usd
	cof	Service Chargesand Other Customer Related Fees ServiceChargesandOtherCustomerRelatedFees	1243000000	usd
	cof	Service Chargesand Other Customer Related Fees ServiceChargesandOtherCustomerRelatedFees	1230000000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.21
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	10.31
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	14.90
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.21
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.31
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.90
CY2022Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.20
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	10.28
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	14.84
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.20
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.28
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	14.84
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	1694000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	4181000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-48000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	8000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-105000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2406000000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-616000000	usd
CY2023Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	550000000	usd
CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2611000000	usd
CY2023Q3	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	249000000	usd
CY2023Q3	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	579000000	usd
CY2023Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	256000000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1881000000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	27476000000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1436000000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6744000000	usd
	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	696000000	usd
	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	1596000000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	730000000	usd
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	14.84
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Entity Central Index Key EntityCentralIndexKey	0000927628
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Period End Date DocumentPeriodEndDate	2023-09-30
CY2023Q3	us-gaap	Financing Receivable Pledged Status Extensible Enumeration FinancingReceivablePledgedStatusExtensibleEnumeration	http://fasb.org/us-gaap/2023#AssetPledgedAsCollateralMember
CY2023Q3	us-gaap	Derivative Liability Statement Of Financial Position Extensible Enumeration DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherLiabilities
	us-gaap	Fair Value Recurring Basis Unobservable Input Reconciliation Net Derivative Asset Liability Gain Loss Statement Of Income Extensible List FairValueRecurringBasisUnobservableInputReconciliationNetDerivativeAssetLiabilityGainLossStatementOfIncomeExtensibleList	http://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-13300
	dei	Entity Registrant Name EntityRegistrantName	CAPITAL ONE FINANCIAL CORP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	54-1719854
	dei	Entity Address Address Line1 EntityAddressAddressLine1	1680 Capital One Drive,
	dei	Entity Address City Or Town EntityAddressCityOrTown	McLean,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	VA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	22102
	dei	City Area Code CityAreaCode	703
	dei	Local Phone Number LocalPhoneNumber	720-1000
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2023Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	380846771	shares
	cof	Interest Expense Other Borrowings InterestExpenseOtherBorrowings	35000000	usd
	cof	Interest Expense Other Borrowings InterestExpenseOtherBorrowings	104000000	usd
CY2023Q3	us-gaap	Interest Expense InterestExpense	3450000000	usd
CY2022Q3	us-gaap	Interest Expense InterestExpense	1197000000	usd
	us-gaap	Interest Expense InterestExpense	9071000000	usd
	us-gaap	Interest Expense InterestExpense	2162000000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	7003000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	21722000000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1669000000	usd
CY2023Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	24000000	usd
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	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	60000000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	45000000	usd
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CY2023Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.45
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	us-gaap	Net Income Loss NetIncomeLoss	6128000000	usd
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	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-282000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-2496000000	usd
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	cof	Other Comprehensive Income Other Net Of Tax Attributable To Parent OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent	0	usd
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	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2308000000	usd
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CY2023Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	695336698	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	690334422	shares
CY2023Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	380991150	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	381318702	shares
CY2023Q3	us-gaap	Common Stock Value CommonStockValue	7000000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	7000000	usd
CY2023Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	35334000000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	34725000000	usd
CY2023Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	60529000000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	57184000000	usd
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12224000000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9916000000	usd
CY2022Q4	cof	Treasury Stock Par Or Stated Value Per Share TreasuryStockParOrStatedValuePerShare	0.01
CY2023Q3	cof	Treasury Stock Par Or Stated Value Per Share TreasuryStockParOrStatedValuePerShare	0.01
CY2023Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	314345548	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	309015720	shares
CY2023Q3	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	29978000000	usd
CY2022Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	29418000000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	53668000000	usd
CY2023Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	471435000000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	455249000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	52582000000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2336000000	usd
CY2023Q1	us-gaap	Dividends Common Stock DividendsCommonStock	234000000	usd
CY2023Q1	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	57000000	usd
CY2023Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	246000000	usd
CY2023Q1	cof	Stock Issued During Period Value New Issuesand Restricted Stock Netof Forfeitures StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures	76000000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	153000000	usd
CY2023Q2	us-gaap	Dividends Common Stock DividendsCommonStock	232000000	usd
CY2023Q2	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	57000000	usd
CY2023Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	157000000	usd
CY2023Q2	cof	Stock Issued During Period Value New Issuesand Restricted Stock Netof Forfeitures StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures	88000000	usd
CY2023Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	122000000	usd
CY2023Q3	cof	Stock Issued During Period Value Stock Options And Warrants Exercised And Restricted Stock Vesting StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting	4000000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	96000000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	53668000000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	61029000000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-2064000000	usd
CY2022Q1	us-gaap	Dividends Common Stock DividendsCommonStock	251000000	usd
CY2022Q1	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	57000000	usd
CY2022Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	2484000000	usd
CY2022Q1	cof	Stock Issued During Period Value New Issuesand Restricted Stock Netof Forfeitures StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures	68000000	usd
CY2022Q1	cof	Stock Issued During Period Value Stock Options And Warrants Exercised And Restricted Stock Vesting StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting	1000000	usd
CY2022Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	103000000	usd
CY2022Q1	us-gaap	Stockholders Equity StockholdersEquity	56345000000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-792000000	usd
CY2022Q2	us-gaap	Dividends Common Stock DividendsCommonStock	236000000	usd
CY2022Q2	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	57000000	usd
CY2022Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1988000000	usd
CY2022Q2	cof	Stock Issued During Period Value New Issuesand Restricted Stock Netof Forfeitures StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures	70000000	usd
CY2022Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	68000000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	53410000000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-2094000000	usd
CY2022Q3	us-gaap	Dividends Common Stock DividendsCommonStock	232000000	usd
CY2022Q3	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	57000000	usd
CY2022Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	319000000	usd
CY2022Q3	cof	Stock Issued During Period Value New Issuesand Restricted Stock Netof Forfeitures StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures	76000000	usd
CY2022Q3	cof	Stock Issued During Period Value Stock Options And Warrants Exercised And Restricted Stock Vesting StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting	10000000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	67000000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	50861000000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.80
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	4181000000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	6128000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	4181000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	6128000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	7569000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3431000000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2428000000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2367000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-513000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-371000000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-9000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	-1000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	193000000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	372000000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	238000000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	46000000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-20000000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3990000000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	6894000000	usd
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	3847000000	usd
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	6242000000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	350000000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	390000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	483000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5898000000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	158000000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	152000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	301000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	812000000	usd
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	usd
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-1000000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13475000000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5652000000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	7334000000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	11614000000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	6663000000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	16905000000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2570000000	usd
	cof	Payments For Proceeds From Sale Of Financing Receivable Held For Investment PaymentsForProceedsFromSaleOfFinancingReceivableHeldForInvestment	8827000000	usd
	cof	Payments For Proceeds From Sale Of Financing Receivable Held For Investment PaymentsForProceedsFromSaleOfFinancingReceivableHeldForInvestment	25469000000	usd
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	1715000000	usd
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	1631000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	700000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	644000000	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2785000000	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1127000000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	962000000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	543000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-12230000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-18291000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	13080000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	6771000000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	2443000000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	8230000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	2003000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	6572000000	usd
	cof	Proceedsfrom Issuanceof Unsecured Debtand Long Term Fhlb Advances Netof Issuance Cost ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost	5728000000	usd
	cof	Proceedsfrom Issuanceof Unsecured Debtand Long Term Fhlb Advances Netof Issuance Cost ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost	21271000000	usd
	cof	Repaymentsof Unsecured Debtand Long Term Fhlb Advances RepaymentsofUnsecuredDebtandLongTermFHLBAdvances	4886000000	usd
	cof	Repaymentsof Unsecured Debtand Long Term Fhlb Advances RepaymentsofUnsecuredDebtandLongTermFHLBAdvances	8061000000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-369000000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-307000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	235000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	214000000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	698000000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	719000000	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	171000000	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	171000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	560000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4791000000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	4000000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	11000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	12803000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	15876000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	14048000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3237000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	31256000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	22054000000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	45304000000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25291000000	usd
	cof	Transfer Of To Portfolio Financing Receivables To From Held For Sale TransferOfToPortfolioFinancingReceivablesToFromHeldForSale	1174000000	usd
	cof	Transfer Of To Portfolio Financing Receivables To From Held For Sale TransferOfToPortfolioFinancingReceivablesToFromHeldForSale	680000000	usd
	us-gaap	Interest Paid Net InterestPaidNet	10196000000	usd
	us-gaap	Interest Paid Net InterestPaidNet	1927000000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	871000000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	991000000	usd
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
	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.
CY2023Q3	us-gaap	Debt Securities Available For Sale Change In Present Value Interest Income DebtSecuritiesAvailableForSaleChangeInPresentValueInterestIncome	241000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Change In Present Value Interest Income DebtSecuritiesAvailableForSaleChangeInPresentValueInterestIncome	215000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	87650000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	4000000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	101000000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	12910000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	74837000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	87047000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3000000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	154000000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	10279000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	76919000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	10980000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	294000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	60388000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	12610000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	71368000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	12904000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	30629000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2141000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	40544000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	8133000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	71173000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	10274000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	2910	security
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	2840	security
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	2153000000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	7689000000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	4435000000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	60560000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	74837000000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	2175000000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	7961000000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	4995000000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	72519000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	87650000000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity Rolling Within One Year Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingWithinOneYearWeightedAverageYield	0.0358
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity Rolling After One Through Five Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfterOneThroughFiveYearsWeightedAverageYield	0.0383
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity Rolling After Five Through Ten Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfterFiveThroughTenYearsWeightedAverageYield	0.0328
CY2023Q3	us-gaap	Debt Securities Available For Sale Maturity Rolling After10 Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfter10YearsWeightedAverageYield	0.0283
CY2023Q3	us-gaap	Debt Securities Available For Sale Weighted Average Yield DebtSecuritiesAvailableForSaleWeightedAverageYield	0.0296
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CY2023Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	9696000000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	499000000	usd
CY2022Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	7578000000	usd
CY2022Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	123000000	usd
CY2022Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	689000000	usd
CY2022Q3	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	120000000	usd
CY2022Q3	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	319000000	usd
CY2022Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	192000000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1336000000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	20550000000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	193000000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1200000000	usd
	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	214000000	usd
	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	644000000	usd
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CY2023Q3	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-20000000	usd
	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-56000000	usd
CY2022Q3	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-23000000	usd
	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-57000000	usd
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	877000000	usd
	us-gaap	Maximum Length Of Time Hedged In Cash Flow Hedge1 MaximumLengthOfTimeHedgedInCashFlowHedge1	P9Y6M
CY2023Q3	us-gaap	Preferred Stock Including Additional Paid In Capital Net Of Discount PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount	4845000000	usd
CY2022Q4	us-gaap	Preferred Stock Including Additional Paid In Capital Net Of Discount PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount	4845000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-2780000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-672000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2108000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-3882000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-947000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2935000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-342000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-83000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-259000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-1065000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-261000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-804000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-2000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	37000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-39000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	33000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	81000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-48000000	usd
CY2023Q3	cof	Other Comprehensive Income Loss Before Tax Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxAttributableToParent	0	usd
CY2023Q3	cof	Other Comprehensive Income Loss Other Tax Attributable To Parent OtherComprehensiveIncomeLossOtherTaxAttributableToParent	0	usd
CY2023Q3	cof	Other Comprehensive Income Other Net Of Tax Attributable To Parent OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent	0	usd
CY2022Q3	cof	Other Comprehensive Income Loss Before Tax Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxAttributableToParent	-1000000	usd
CY2022Q3	cof	Other Comprehensive Income Loss Other Tax Attributable To Parent OtherComprehensiveIncomeLossOtherTaxAttributableToParent	0	usd
CY2022Q3	cof	Other Comprehensive Income Other Net Of Tax Attributable To Parent OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent	-1000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-3124000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-718000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2406000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-4915000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-1127000000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3788000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-2684000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-650000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2034000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-11181000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-2705000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-8476000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-372000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-90000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-282000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-3292000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-796000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-2496000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	8000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	0	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	8000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	47000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	152000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-105000000	usd
	cof	Other Comprehensive Income Loss Before Tax Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxAttributableToParent	0	usd
	cof	Other Comprehensive Income Loss Other Tax Attributable To Parent OtherComprehensiveIncomeLossOtherTaxAttributableToParent	0	usd
	cof	Other Comprehensive Income Other Net Of Tax Attributable To Parent OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent	0	usd
	cof	Other Comprehensive Income Loss Before Tax Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxAttributableToParent	-1000000	usd
	cof	Other Comprehensive Income Loss Other Tax Attributable To Parent OtherComprehensiveIncomeLossOtherTaxAttributableToParent	0	usd
	cof	Other Comprehensive Income Other Net Of Tax Attributable To Parent OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent	-1000000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-3048000000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-740000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2308000000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-14427000000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-3349000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11078000000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	1790000000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	1694000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	4181000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	6128000000	usd
CY2023Q3	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	28000000	usd
CY2022Q3	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	21000000	usd
	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	67000000	usd
	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	74000000	usd
CY2023Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	57000000	usd
CY2022Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	57000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	171000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	171000000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1705000000	usd
CY2022Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1616000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3943000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5883000000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	382500000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	383400000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	382700000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	394900000	shares
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100000	shares
CY2022Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	200000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	400000	shares
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	700000	shares
CY2022Q3	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1000000.0	shares
	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	800000	shares
	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1100000	shares
CY2023Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	800000	shares
CY2022Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1200000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	900000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1500000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	383300000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	384600000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	383600000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	396400000	shares
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.46
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.21
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.31
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.90
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.45
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.20
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.28
CY2023Q3	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	1471000000	usd
CY2023Q3	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	1471000000	usd
CY2023Q3	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	632000000	usd
CY2023Q3	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	632000000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	1134000000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	1134000000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1235000000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	1235000000	usd
CY2023Q3	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	1000000	usd
CY2022Q4	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	4000000	usd
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	7423000000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	1943000000	usd
CY2023Q3	us-gaap	Revenues Revenues	9366000000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2284000000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	4860000000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2222000000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	432000000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1790000000	usd
CY2023Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	314780000000	usd
CY2023Q3	us-gaap	Deposits Deposits	346011000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	21722000000	usd
	us-gaap	Noninterest Income NoninterestIncome	5559000000	usd
	us-gaap	Revenues Revenues	27281000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	7569000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	14599000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5113000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	932000000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	4181000000	usd
CY2023Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	314780000000	usd
CY2023Q3	us-gaap	Deposits Deposits	346011000000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	7003000000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	1802000000	usd
CY2022Q3	us-gaap	Revenues Revenues	8805000000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1669000000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	4949000000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2187000000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	493000000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1694000000	usd
CY2022Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	303943000000	usd
CY2022Q3	us-gaap	Deposits Deposits	317193000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	19917000000	usd
	us-gaap	Noninterest Income NoninterestIncome	5293000000	usd
	us-gaap	Revenues Revenues	25210000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3431000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	14083000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7696000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1568000000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	6128000000	usd
CY2022Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	303943000000	usd
CY2022Q3	us-gaap	Deposits Deposits	317193000000	usd
CY2023Q3	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	449000000	usd
	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	1300000000	usd
CY2022Q3	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	222000000	usd
	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	625000000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1475000000	usd
CY2023Q3	cof	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	468000000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	1943000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4169000000	usd
	cof	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	1390000000	usd
	us-gaap	Noninterest Income NoninterestIncome	5559000000	usd
CY2022Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1415000000	usd
CY2022Q3	cof	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	387000000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	1802000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4055000000	usd
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	us-gaap	Noninterest Income NoninterestIncome	5293000000	usd
CY2023Q3	cof	Letterof Credit Issued Contractual Amountand Unused Commitmentto Extend Credit LetterofCreditIssuedContractualAmountandUnusedCommitmenttoExtendCredit	439198000000	usd
CY2022Q4	cof	Letterof Credit Issued Contractual Amountand Unused Commitmentto Extend Credit LetterofCreditIssuedContractualAmountandUnusedCommitmenttoExtendCredit	409314000000	usd
CY2023Q3	cof	Off Balance Sheet Lending Commitment Carrying Value OffBalanceSheetLendingCommitmentCarryingValue	125000000	usd
CY2022Q4	cof	Off Balance Sheet Lending Commitment Carrying Value OffBalanceSheetLendingCommitmentCarryingValue	204000000	usd
CY2023Q3	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	200000000	usd
CY2023Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
cof-20230930_lab.xml	Edgar Link	unprocessable
cof-20230930_def.xml	Edgar Link	unprocessable
cof-20230930_cal.xml	Edgar Link	unprocessable
0000927628-23-000296-index-headers.html	Edgar Link	pending
0000927628-23-000296-index.html	Edgar Link	pending
0000927628-23-000296.txt	Edgar Link	pending
0000927628-23-000296-xbrl.zip	Edgar Link	pending
cof-09302023x10qxex311.htm	Edgar Link	pending
cof-09302023x10qxex312.htm	Edgar Link	pending
cof-09302023x10qxex321.htm	Edgar Link	pending
cof-09302023x10qxex322.htm	Edgar Link	pending
cof-20230930.htm	Edgar Link	pending
cof-20230930.xsd	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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R5.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
cof-20230930_pre.xml	Edgar Link	unprocessable
cof-20230930_htm.xml	Edgar Link	completed
R50.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$COF
CAPITAL ONE FINANCIAL CORP Stock $cof

2023 Q4 Form 10-Q Financial Statement

#000092762823000296 Filed on November 02, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COF CAPITAL ONE FINANCIAL CORP Stock $cof

2023 Q4 Form 10-Q Financial Statement

#000092762823000296 Filed on November 02, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COF
CAPITAL ONE FINANCIAL CORP Stock $cof