$COF
CAPITAL ONE FINANCIAL CORP Stock $cof

$cof Overview Financials Valuation SEC Filings Company Website

2023 Q2 Form 10-Q Financial Statement

#000092762823000250 Filed on July 27, 2023

Income Statement

Concept	2023 Q2
Revenue	$9.012B
YoY Change	9.48%
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	1.47%
% of Gross Profit
Depreciation & Amortization	$325.0M
YoY Change	-58.55%
% of Gross Profit
Operating Expenses	$344.0M
YoY Change	1.47%
Operating Profit
YoY Change
Interest Expense	$3.053B
YoY Change	428.2%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$1.728B
YoY Change	-32.61%
Income Tax	$297.0M
% Of Pretax Income	17.19%
Net Earnings	$1.351B
YoY Change	-33.48%
Net Earnings / Revenue	14.99%
Basic Earnings Per Share	$3.53
Diluted Earnings Per Share	$3.52
COMMON SHARES
Basic Shares Outstanding	381.8M shares
Diluted Shares Outstanding	383.7M shares

Balance Sheet

Concept	2023 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$42.05B
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	$4.359B
YoY Change	2.86%
Goodwill	$15.06B
YoY Change	1.91%
Intangibles	$356.0M
YoY Change	328.92%
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	$467.8B
YoY Change	6.25%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$637.0M
YoY Change	91.29%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$649.0M
YoY Change	47.5%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.286B
YoY Change	286.19%
LONG-TERM LIABILITIES
Long-Term Debt	$49.49B
YoY Change	3.1%
Other Long-Term Liabilities	$18.64B
YoY Change	-5.48%
Total Long-Term Liabilities	$68.13B
YoY Change	0.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.286B
Total Long-Term Liabilities	$68.13B
Total Liabilities	$413.2B
YoY Change	6.81%
SHAREHOLDERS EQUITY
Retained Earnings	$59.03B
YoY Change	7.64%
Common Stock	$7.000M
YoY Change	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$54.56B
YoY Change
Total Liabilities & Shareholders Equity	$467.8B
YoY Change	6.25%

Cashflow Statement

Concept	2023 Q2
OPERATING ACTIVITIES
Net Income	$1.351B
YoY Change	-33.48%
Depreciation, Depletion And Amortization	$325.0M
YoY Change	-58.55%
Cash From Operating Activities	$3.354B
YoY Change	13.54%
INVESTING ACTIVITIES
Capital Expenditures	$206.0M
YoY Change	-206.74%
Acquisitions
YoY Change
Other Investing Activities	-$3.959B
YoY Change	-71.89%
Cash From Investing Activities	-$4.165B
YoY Change	-70.82%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-4.114B
YoY Change	-163.43%
NET CHANGE
Cash From Operating Activities	3.354B
Cash From Investing Activities	-4.165B
Cash From Financing Activities	-4.114B
Net Change In Cash	-4.925B
YoY Change	1.86%
FREE CASH FLOW
Cash From Operating Activities	$3.354B
Capital Expenditures	$206.0M
Free Cash Flow	$3.148B
YoY Change	0.03%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.85
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.65
	dei	Document Period End Date DocumentPeriodEndDate	2023-06-30
CY2023Q2	us-gaap	Financing Receivable Pledged Status Extensible Enumeration FinancingReceivablePledgedStatusExtensibleEnumeration	http://fasb.org/us-gaap/2023#AssetPledgedAsCollateralMember
CY2023Q2	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
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	12972000000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	837000000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	70000000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	13879000000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	511000000	usd
	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	94000000	usd
	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	325000000	usd
	cof	Interest Expense Other Borrowings InterestExpenseOtherBorrowings	35000000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	11152000000	usd
	cof	Interchange Fees Net InterchangeFeesNet	2234000000	usd
	cof	Service Chargesand Other Customer Related Fees ServiceChargesandOtherCustomerRelatedFees	815000000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	28000000	usd
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	10.65
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.65
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	10.61
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.61
	us-gaap	Net Income Loss NetIncomeLoss	4434000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-5541000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-1692000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-57000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1278000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2823000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	98000000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	153000000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-792000000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2489000000	usd
CY2023Q2	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3360000000	usd
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	5193000000	usd
CY2023Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	38236000000	usd
CY2022Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	25663000000	usd
CY2023Q2	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	41596000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	30856000000	usd
CY2023Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	452000000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	400000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	88400000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	87000000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	4000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	78412000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	76919000000	usd
CY2023Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	311323000000	usd
CY2022Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	312331000000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	14646000000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	13240000000	usd
CY2023Q2	us-gaap	Notes Receivable Net NotesReceivableNet	296677000000	usd
CY2022Q4	us-gaap	Notes Receivable Net NotesReceivableNet	299091000000	usd
CY2023Q2	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	542000000	usd
CY2022Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	191000000	usd
CY2023Q2	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1211000000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	203000000	usd
CY2023Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4359000000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4351000000	usd
CY2023Q2	us-gaap	Interest Receivable InterestReceivable	2297000000	usd
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	2104000000	usd
CY2023Q2	us-gaap	Goodwill Goodwill	15060000000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	14777000000	usd
CY2023Q2	us-gaap	Other Assets OtherAssets	27736000000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	26548000000	usd
CY2022Q4	cof	Treasury Stock Par Or Stated Value Per Share TreasuryStockParOrStatedValuePerShare	0.01
CY2023Q2	us-gaap	Assets Assets	467800000000	usd
CY2022Q4	us-gaap	Assets Assets	455249000000	usd
CY2023Q2	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	637000000	usd
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	527000000	usd
CY2023Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	29312000000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	32203000000	usd
CY2023Q2	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	314393000000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	300789000000	usd
CY2023Q2	us-gaap	Deposits Deposits	343705000000	usd
CY2022Q4	us-gaap	Deposits Deposits	332992000000	usd
CY2023Q2	us-gaap	Secured Debt SecuredDebt	17861000000	usd
CY2022Q4	us-gaap	Secured Debt SecuredDebt	16973000000	usd
CY2023Q2	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	649000000	usd
CY2022Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	883000000	usd
CY2023Q2	us-gaap	Unsecured Debt UnsecuredDebt	31627000000	usd
CY2022Q4	us-gaap	Unsecured Debt UnsecuredDebt	30826000000	usd
CY2023Q2	us-gaap	Other Borrowings OtherBorrowings	121000000	usd
CY2022Q4	us-gaap	Other Borrowings OtherBorrowings	33000000	usd
CY2023Q2	cof	Debt Excluding Secured Debt DebtExcludingSecuredDebt	32397000000	usd
CY2022Q4	cof	Debt Excluding Secured Debt DebtExcludingSecuredDebt	31742000000	usd
CY2023Q2	us-gaap	Other Liabilities OtherLiabilities	18641000000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	20433000000	usd
CY2023Q2	us-gaap	Liabilities Liabilities	413241000000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	402667000000	usd
CY2023Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2023Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2023Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	4975000	shares
CY2023Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	4975000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	4975000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	4975000	shares
CY2023Q2	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2023Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2023Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	694326955	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	690334422	shares
CY2023Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	381441449	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	381318702	shares
CY2023Q2	us-gaap	Common Stock Value CommonStockValue	7000000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	7000000	usd
CY2023Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	35163000000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	34725000000	usd
CY2023Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	59028000000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	57184000000	usd
CY2023Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9818000000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9916000000	usd
CY2023Q2	cof	Treasury Stock Par Or Stated Value Per Share TreasuryStockParOrStatedValuePerShare	0.01
CY2023Q2	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	312885506	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	309015720	shares
CY2023Q2	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	29821000000	usd
CY2022Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	29418000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	52582000000	usd
CY2023Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	467800000000	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
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	54559000000	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
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2023Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.20
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.20
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	2391000000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	4434000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2391000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	4434000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5285000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1762000000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1576000000	usd
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1623000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-400000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-11000000	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	usd
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-6000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	181000000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	277000000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	172000000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	48000000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-20000000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3339000000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	4040000000	usd
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	2975000000	usd
	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	4354000000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	178000000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	151000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	55000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5578000000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	110000000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	52000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-2245000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	414000000	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	6346000000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2875000000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	7698000000	usd
	cof	Payments For Proceeds From Sale Of Financing Receivable Held For Investment PaymentsForProceedsFromSaleOfFinancingReceivableHeldForInvestment	2749000000	usd
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	1133000000	usd
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	1092000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	441000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	423000000	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	0	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	652000000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	490000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-7159000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-12502000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	10743000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-2913000000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	2444000000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	6483000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1551000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	3593000000	usd
	cof	Proceedsfrom Issuanceof Unsecured Debtand Long Term Fhlb Advances Netof Issuance Cost ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost	5727000000	usd
	cof	Proceedsfrom Issuanceof Unsecured Debtand Long Term Fhlb Advances Netof Issuance Cost ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost	17528000000	usd
	cof	Repaymentsof Unsecured Debtand Long Term Fhlb Advances RepaymentsofUnsecuredDebtandLongTermFHLBAdvances	4886000000	usd
	cof	Repaymentsof Unsecured Debtand Long Term Fhlb Advances RepaymentsofUnsecuredDebtandLongTermFHLBAdvances	2357000000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-53000000	usd
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-391000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	164000000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	10279000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	138000000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	466000000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	487000000	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	114000000	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	114000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	403000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4472000000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	11605000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9823000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	10792000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	196000000	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
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	42048000000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	22250000000	usd
	cof	Transfer Of To Portfolio Financing Receivables To From Held For Sale TransferOfToPortfolioFinancingReceivablesToFromHeldForSale	745000000	usd
	cof	Transfer Of To Portfolio Financing Receivables To From Held For Sale TransferOfToPortfolioFinancingReceivablesToFromHeldForSale	775000000	usd
	us-gaap	Interest Paid Net InterestPaidNet	6324000000	usd
	us-gaap	Interest Paid Net InterestPaidNet	969000000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	631000000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	473000000	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.
CY2023Q2	us-gaap	Debt Securities Available For Sale Change In Present Value Interest Income DebtSecuritiesAvailableForSaleChangeInPresentValueInterestIncome	224000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Change In Present Value Interest Income DebtSecuritiesAvailableForSaleChangeInPresentValueInterestIncome	215000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	88445000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	4000000	usd
CY2023Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	143000000	usd
CY2023Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	10172000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	78412000000	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	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	76919000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	17993000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	550000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	56222000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	9618000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	74215000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	10168000000	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
CY2023Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	2860	security
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	2840	security
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	1214000000	usd
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	8195000000	usd
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	4704000000	usd
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	64299000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	78412000000	usd
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	1219000000	usd
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	8452000000	usd
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	5204000000	usd
CY2023Q2	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	73570000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	88445000000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Maturity Rolling Within One Year Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingWithinOneYearWeightedAverageYield	0.0416
CY2023Q2	us-gaap	Debt Securities Available For Sale Maturity Rolling After One Through Five Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfterOneThroughFiveYearsWeightedAverageYield	0.0356
CY2023Q2	us-gaap	Debt Securities Available For Sale Maturity Rolling After Five Through Ten Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfterFiveThroughTenYearsWeightedAverageYield	0.0300
CY2023Q2	us-gaap	Debt Securities Available For Sale Maturity Rolling After10 Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityRollingAfter10YearsWeightedAverageYield	0.0277
CY2023Q2	us-gaap	Debt Securities Available For Sale Weighted Average Yield DebtSecuritiesAvailableForSaleWeightedAverageYield	0.0288
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2022Q2	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1800000000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2200000000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-6000000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-6000000	usd
CY2023Q2	us-gaap	Security Owned And Pledged As Collateral Associated Liabilities Fair Value SecurityOwnedAndPledgedAsCollateralAssociatedLiabilitiesFairValue	47100000000	usd
CY2022Q4	us-gaap	Security Owned And Pledged As Collateral Associated Liabilities Fair Value SecurityOwnedAndPledgedAsCollateralAssociatedLiabilitiesFairValue	21300000000	usd
CY2023Q2	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	66000000	usd
CY2022Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	82000000	usd
CY2023Q2	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	2100000000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	1900000000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Current FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCurrent	300858000000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	311323000000	usd
CY2023Q2	cof	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Current Percent Total FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCurrentPercentTotal	0.9664
CY2023Q2	cof	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Percent Total FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossPercentTotal	1.0000
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Current FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCurrent	302305000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	312331000000	usd
CY2022Q4	cof	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Current Percent Total FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCurrentPercentTotal	0.9679
CY2022Q4	cof	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Percent Total FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossPercentTotal	1.0000
CY2023Q2	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	1400000000	usd
CY2022Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	1400000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	5015000000	usd
CY2023Q2	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	5788000000	usd
CY2023Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	2491000000	usd
CY2023Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1452000000	usd
CY2023Q2	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	540000000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	2240000000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1344000000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	548000000	usd
CY2023Q2	cof	Financing Receivable Percent90 Days Past Dueand Still Accruing FinancingReceivablePercent90DaysPastDueandStillAccruing	0.0080
CY2023Q2	us-gaap	Financing Receivable Nonaccrual Percent Past Due1 FinancingReceivableNonaccrualPercentPastDue1	0.0047
CY2023Q2	cof	Financing Receivable Nonaccrual No Allowance Percent Past Due FinancingReceivableNonaccrualNoAllowancePercentPastDue	0.0017
CY2022Q4	cof	Financing Receivable Percent90 Days Past Dueand Still Accruing FinancingReceivablePercent90DaysPastDueandStillAccruing	0.0072
CY2022Q4	us-gaap	Financing Receivable Nonaccrual Percent Past Due1 FinancingReceivableNonaccrualPercentPastDue1	0.0043
CY2022Q4	cof	Financing Receivable Nonaccrual No Allowance Percent Past Due FinancingReceivableNonaccrualNoAllowancePercentPastDue	0.0018
CY2023Q2	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	5000000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	17000000	usd
CY2022Q2	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	1000000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	11000000	usd
CY2023Q2	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	875000000	usd
CY2023Q2	us-gaap	Financing Receivable Modification To Total Financing Receivables Percent FinancingReceivableModificationToTotalFinancingReceivablesPercent	0.0028
	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	1534000000	usd
	us-gaap	Financing Receivable Modification To Total Financing Receivables Percent FinancingReceivableModificationToTotalFinancingReceivablesPercent	0.0049
CY2023Q2	cof	Financing Receivable Excluding Accrued Interest Modified After12 Months FinancingReceivableExcludingAccruedInterestModifiedAfter12Months	1534000000	usd
CY2023Q2	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	48000000	usd
CY2022Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	629000000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1134000000	usd
CY2022Q2	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	166000000	usd
CY2022Q2	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	31164	contract
CY2022Q2	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	104000000	usd
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	55655	contract
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	198000000	usd
	cof	Financing Receivable Allowance For Credit Loss Translation Adjustments And Purchase Credit Deteriorated Loans FinancingReceivableAllowanceForCreditLossTranslationAdjustmentsAndPurchaseCreditDeterioratedLoans	32000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	15000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	375000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	388000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	189000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	194000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	251000000	usd
	cof	Financing Receivable Excluding Accrued Interest Term Writeoff FinancingReceivableExcludingAccruedInterestTermWriteoff	1412000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	3562000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	41000000	usd
CY2022Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	5281000000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	345000000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	322000000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	434000000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	467000000	usd
CY2023Q2	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	5200000000	usd
CY2022Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	4900000000	usd
CY2023Q2	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	2100000000	usd
CY2022Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	1800000000	usd
CY2023Q2	us-gaap	Goodwill Gross GoodwillGross	15060000000	usd
CY2023Q2	us-gaap	Goodwill Goodwill	15060000000	usd
CY2023Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	545000000	usd
CY2023Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	189000000	usd
CY2023Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	356000000	usd
CY2023Q2	cof	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	15605000000	usd
CY2023Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	189000000	usd
CY2023Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	15416000000	usd
CY2023Q2	cof	Mortgage Servicing Assetat Amortized Cost Gross MortgageServicingAssetatAmortizedCostGross	653000000	usd
CY2023Q2	cof	Servicing Assetat Amortized Cost Accumulated Amortization ServicingAssetatAmortizedCostAccumulatedAmortization	236000000	usd
CY2023Q2	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	417000000	usd
CY2022Q4	us-gaap	Goodwill Gross GoodwillGross	14777000000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	14777000000	usd
CY2022Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	342000000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	183000000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	159000000	usd
CY2022Q4	cof	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	15119000000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	183000000	usd
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	14936000000	usd
CY2022Q4	cof	Mortgage Servicing Assetat Amortized Cost Gross MortgageServicingAssetatAmortizedCostGross	660000000	usd
CY2022Q4	cof	Servicing Assetat Amortized Cost Accumulated Amortization ServicingAssetatAmortizedCostAccumulatedAmortization	223000000	usd
CY2022Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	437000000	usd
CY2023Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	22000000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	36000000	usd
CY2022Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14000000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	28000000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	14777000000	usd
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	273000000	usd
	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	10000000	usd
CY2023Q2	us-gaap	Goodwill Goodwill	15060000000	usd
CY2023Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	29312000000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	32203000000	usd
CY2023Q2	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	314393000000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	300789000000	usd
CY2023Q2	us-gaap	Deposits Deposits	343705000000	usd
CY2022Q4	us-gaap	Deposits Deposits	332992000000	usd
CY2023Q2	us-gaap	Short Term Borrowings ShortTermBorrowings	649000000	usd
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	883000000	usd
CY2023Q2	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	49609000000	usd
CY2022Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	47832000000	usd
CY2023Q2	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	50258000000	usd
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	48715000000	usd
CY2023Q2	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	15100000000	usd
CY2023Q2	us-gaap	Deposit Liability Uninsured DepositLiabilityUninsured	9500000000	usd
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	6100000000	usd
CY2022Q4	us-gaap	Deposit Liability Uninsured DepositLiabilityUninsured	2000000000	usd
CY2023Q2	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	282510000000	usd
CY2023Q2	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	2745000000	usd
CY2023Q2	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	3556000000	usd
CY2022Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	227801000000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	3098000000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	4550000000	usd
CY2023Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	1250000000	usd
CY2023Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	717000000	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
CY2023Q2	us-gaap	Derivative Assets DerivativeAssets	1495000000	usd
CY2023Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	2839000000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	1964000000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	3315000000	usd
CY2023Q2	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	2000000	usd
CY2022Q4	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	4000000	usd
CY2023Q2	us-gaap	Hedged Asset Discontinued Fair Value Hedge Cumulative Increase Decrease HedgedAssetDiscontinuedFairValueHedgeCumulativeIncreaseDecrease	380000000	usd
CY2022Q4	us-gaap	Hedged Asset Discontinued Fair Value Hedge Cumulative Increase Decrease HedgedAssetDiscontinuedFairValueHedgeCumulativeIncreaseDecrease	236000000	usd
CY2023Q2	us-gaap	Prepayable Financial Asset Closed Portfolio Last Of Layer Amortized Cost PrepayableFinancialAssetClosedPortfolioLastOfLayerAmortizedCost	365000000	usd
CY2022Q4	us-gaap	Prepayable Financial Asset Closed Portfolio Last Of Layer Amortized Cost PrepayableFinancialAssetClosedPortfolioLastOfLayerAmortizedCost	225000000	usd
CY2023Q2	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	-11000000	usd
CY2022Q4	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	-13000000	usd
CY2023Q2	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	2745000000	usd
CY2023Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	479000000	usd
CY2023Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	771000000	usd
CY2023Q2	us-gaap	Derivative Assets DerivativeAssets	1495000000	usd
CY2023Q2	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	71000000	usd
CY2023Q2	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	1424000000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Asset Including Not Subject To Master Netting Arrangement DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement	3098000000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	759000000	usd
CY2022Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	375000000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	1964000000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	96000000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	1868000000	usd
CY2023Q2	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	3556000000	usd
CY2023Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	479000000	usd
CY2023Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	238000000	usd
CY2023Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	2839000000	usd
CY2023Q2	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	56000000	usd
CY2023Q2	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	2783000000	usd
CY2023Q2	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	649000000	usd
CY2023Q2	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	usd
CY2023Q2	cof	Repurchase Agreement Collateral Right To Reclaim Cash Offset RepurchaseAgreementCollateralRightToReclaimCashOffset	0	usd
CY2023Q2	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	649000000	usd
CY2023Q2	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	649000000	usd
CY2023Q2	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Liability Including Not Subject To Master Netting Arrangement DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement	4550000000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	759000000	usd
CY2022Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	476000000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	3315000000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	85000000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	3230000000	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	883000000	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	0	usd
CY2022Q4	cof	Repurchase Agreement Collateral Right To Reclaim Cash Offset RepurchaseAgreementCollateralRightToReclaimCashOffset	0	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	883000000	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	883000000	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	0	usd
CY2023Q2	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	1200000000	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	608000000	usd
CY2023Q2	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	66000000	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	82000000	usd
CY2023Q2	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1900000000	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	2300000000	usd
CY2023Q2	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	662000000	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	900000000	usd
CY2023Q2	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	639000000	usd
CY2023Q2	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	9057000000	usd
CY2023Q2	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	470000000	usd
CY2023Q2	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2277000000	usd
CY2023Q2	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	236000000	usd
CY2023Q2	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	528000000	usd
CY2023Q2	us-gaap	Noninterest Income Other NoninterestIncomeOther	275000000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	1254000000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	17780000000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	886000000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	4133000000	usd
	cof	Interest Expense Secured Debt InterestExpenseSecuredDebt	447000000	usd
	cof	Interest Expense Unsecured Debt InterestExpenseUnsecuredDebt	1017000000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	474000000	usd
CY2023Q2	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-21000000	usd
	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-36000000	usd
CY2022Q2	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-17000000	usd
	cof	Amortization Of Basis Adjustment On Discontinued Hedges AmortizationOfBasisAdjustmentOnDiscontinuedHedges	-34000000	usd
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	882000000	usd
	us-gaap	Maximum Length Of Time Hedged In Cash Flow Hedge1 MaximumLengthOfTimeHedgedInCashFlowHedge1	P9Y8M12D
CY2023Q2	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
CY2023Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-1171000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-283000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-888000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-3012000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-724000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2288000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-558000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-134000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-424000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-634000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-151000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-483000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	9000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-25000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	34000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	4000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	56000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-52000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-1720000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-442000000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1278000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-3642000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-819000000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2823000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	96000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	22000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	74000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-7299000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-1758000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-5541000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-30000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-7000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-23000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-2227000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-535000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-1692000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	10000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-37000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	47000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	14000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	71000000	usd
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-57000000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	76000000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-22000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	98000000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-9512000000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-2222000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7290000000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	1431000000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	2031000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2391000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	4434000000	usd
CY2023Q2	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	23000000	usd
CY2022Q2	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	25000000	usd
	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	39000000	usd
	cof	Participating Securities Distributedand Undistributed Earnings Lossexcluding Preferred Stock Dividends Basic ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic	53000000	usd
CY2023Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	57000000	usd
CY2022Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	57000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	114000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	114000000	usd
CY2023Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1351000000	usd
CY2022Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1949000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2238000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4267000000	usd
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	382800000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	391200000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	382700000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	400800000	shares
CY2023Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100000	shares
CY2022Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	400000	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
CY2023Q2	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	800000	shares
CY2022Q2	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	1000000.0	shares
	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1100000	shares
CY2023Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	900000	shares
CY2022Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1400000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1100000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1500000	shares
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	383700000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	392600000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	383800000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	402300000	shares
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.53
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.98
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.96
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.83
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.61
CY2023Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	1250000000	usd
CY2023Q2	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	1250000000	usd
CY2023Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	717000000	usd
CY2023Q2	us-gaap	Derivative Liability Fair Value Gross Asset And Right To Reclaim Cash Offset DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset	717000000	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
CY2023Q2	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	2000000	usd
CY2022Q4	cof	Derivative Credit Risk Valuation Adjustment Derivative Assets Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeAssetsLiabilities	4000000	usd
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2023Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	7113000000	usd
CY2023Q2	us-gaap	Noninterest Income NoninterestIncome	1899000000	usd
CY2023Q2	us-gaap	Revenues Revenues	9012000000	usd
CY2023Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2490000000	usd
CY2023Q2	us-gaap	Noninterest Expense NoninterestExpense	4794000000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1728000000	usd
CY2023Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	297000000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1431000000	usd
CY2023Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	311323000000	usd
CY2023Q2	us-gaap	Deposits Deposits	343705000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	14299000000	usd
	us-gaap	Noninterest Income NoninterestIncome	3616000000	usd
	us-gaap	Revenues Revenues	17915000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5285000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	9739000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2891000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	500000000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	2391000000	usd
CY2023Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	311323000000	usd
CY2023Q2	us-gaap	Deposits Deposits	343705000000	usd
CY2022Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	6517000000	usd
CY2022Q2	us-gaap	Noninterest Income NoninterestIncome	1715000000	usd
CY2022Q2	us-gaap	Revenues Revenues	8232000000	usd
CY2022Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1085000000	usd
CY2022Q2	us-gaap	Noninterest Expense NoninterestExpense	4583000000	usd
CY2022Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2564000000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	533000000	usd
CY2022Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	2031000000	usd
CY2022Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	296384000000	usd
CY2022Q2	us-gaap	Deposits Deposits	307885000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	12914000000	usd
	us-gaap	Noninterest Income NoninterestIncome	3491000000	usd
	us-gaap	Revenues Revenues	16405000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1762000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	9134000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5509000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1075000000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	4434000000	usd
CY2022Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	296384000000	usd
CY2022Q2	us-gaap	Deposits Deposits	307885000000	usd
CY2023Q2	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	443000000	usd
	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	848000000	usd
CY2022Q2	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	211000000	usd
	cof	Uncollectible Portionof Billed Finance Chargesand Fees UncollectiblePortionofBilledFinanceChargesandFees	403000000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1416000000	usd
CY2023Q2	cof	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	483000000	usd
CY2023Q2	us-gaap	Noninterest Income NoninterestIncome	1899000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2694000000	usd
	cof	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	922000000	usd
	us-gaap	Noninterest Income NoninterestIncome	3616000000	usd
CY2022Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1407000000	usd
CY2022Q2	cof	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	308000000	usd
CY2022Q2	us-gaap	Noninterest Income NoninterestIncome	1715000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2640000000	usd
	cof	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	851000000	usd
	us-gaap	Noninterest Income NoninterestIncome	3491000000	usd
CY2023Q2	cof	Letterof Credit Issued Contractual Amountand Unused Commitmentto Extend Credit LetterofCreditIssuedContractualAmountandUnusedCommitmenttoExtendCredit	432887000000	usd
CY2022Q4	cof	Letterof Credit Issued Contractual Amountand Unused Commitmentto Extend Credit LetterofCreditIssuedContractualAmountandUnusedCommitmenttoExtendCredit	409314000000	usd
CY2023Q2	cof	Off Balance Sheet Lending Commitment Carrying Value OffBalanceSheetLendingCommitmentCarryingValue	157000000	usd
CY2022Q4	cof	Off Balance Sheet Lending Commitment Carrying Value OffBalanceSheetLendingCommitmentCarryingValue	204000000	usd
CY2023Q2	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	200000000	usd
CY2023Q2	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	true
CY2023Q2	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q2	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q2	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
0000927628-23-000250-index-headers.html	Edgar Link	pending
0000927628-23-000250-index.html	Edgar Link	pending
0000927628-23-000250.txt	Edgar Link	pending
0000927628-23-000250-xbrl.zip	Edgar Link	pending
cof-06302023x10qxex31.htm	Edgar Link	pending
cof-06302023x10qxex311.htm	Edgar Link	pending
cof-06302023x10qxex312.htm	Edgar Link	pending
cof-06302023x10qxex321.htm	Edgar Link	pending
cof-06302023x10qxex322.htm	Edgar Link	pending
cof-20230630.htm	Edgar Link	pending
cof-20230630.xsd	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
cof-20230630_cal.xml	Edgar Link	unprocessable
cof-20230630_def.xml	Edgar Link	unprocessable
cof-20230630_lab.xml	Edgar Link	unprocessable
cof-20230630_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
cof-20230630_htm.xml	Edgar Link	completed
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$COF
CAPITAL ONE FINANCIAL CORP Stock $cof

2023 Q2 Form 10-Q Financial Statement

#000092762823000250 Filed on July 27, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COF CAPITAL ONE FINANCIAL CORP Stock $cof

2023 Q2 Form 10-Q Financial Statement

#000092762823000250 Filed on July 27, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COF
CAPITAL ONE FINANCIAL CORP Stock $cof