$DFS
Discover Financial Services Stock $dfs

$dfs Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000139361224000076 Filed on December 23, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$584.0M
YoY Change		-87.33%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$197.0M
YoY Change		32.21%
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses		$197.0M
YoY Change		32.21%
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income		$1.288B
YoY Change		45.05%
Income Tax		$323.0M
% Of Pretax Income		25.08%
Net Earnings		$928.0M
YoY Change		35.87%
Net Earnings / Revenue		158.9%
Basic Earnings Per Share		$3.32
Diluted Earnings Per Share		$3.70
COMMON SHARES
Basic Shares Outstanding	251.2M shares	251.1M shares
Diluted Shares Outstanding		251.0M shares

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments		$25.65B
YoY Change		13.86%
Cash & Equivalents		$10.79B
Short-Term Investments		$14.87B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment		$1.085B
YoY Change		0.09%
Goodwill		$255.0M
YoY Change		0.0%
Intangibles
YoY Change
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		$151.6B
YoY Change		5.69%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses		$6.304B
YoY Change		10.4%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities		$6.304B
YoY Change		0.99%
LONG-TERM LIABILITIES
Long-Term Debt		$18.18B
YoY Change		-4.0%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities		$18.18B
YoY Change		-4.0%
TOTAL LIABILITIES
Total Short-Term Liabilities		$6.304B
Total Long-Term Liabilities		$18.18B
Total Liabilities		$134.3B
YoY Change		3.98%
SHAREHOLDERS EQUITY
Retained Earnings		$32.47B
YoY Change		7.39%
Common Stock		$6.000M
YoY Change		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$21.07B
YoY Change		0.3%
Treasury Stock Shares
Shareholders Equity		$17.26B
YoY Change
Total Liabilities & Shareholders Equity		$151.6B
YoY Change		5.69%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		$928.0M
YoY Change		35.87%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities
YoY Change
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities
YoY Change
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities
YoY Change
NET CHANGE
Cash From Operating Activities
Cash From Investing Activities
Cash From Financing Activities
Net Change In Cash
YoY Change
FREE CASH FLOW
Cash From Operating Activities
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001393612
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	251226920	shares
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10787000000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	11685000000	usd
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CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	1025000000	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1002000000	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1452000000	usd
CY2024Q3	dfs	Long Term Debt Maturities Repayments Of Principal After Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour	2833000000	usd
CY2024Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	17427000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	4900000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances FederalHomeLoanBankAdvances	1000000000.0	usd
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CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.32
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	City Area Code CityAreaCode	224
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
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CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	4610000000	usd
CY2024Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1213000000	usd
	dei	Amendment Flag AmendmentFlag	false
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CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1061000000	usd
CY2024Q3	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	8000000	usd
CY2023Q3	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	2000000	usd
CY2024Q3	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	236000000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3322000000	usd
CY2024Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1473000000	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1702000000	usd
CY2024Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	2182000000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1620000000	usd
CY2024Q3	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	363000000	usd
CY2023Q3	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	360000000	usd
CY2024Q3	dfs	Protectionproductsrevenue Protectionproductsrevenue	42000000	usd
CY2023Q3	dfs	Protectionproductsrevenue Protectionproductsrevenue	42000000	usd
CY2023Q3	dfs	Loanfeeincome Loanfeeincome	194000000	usd
CY2024Q3	dfs	Transaction Processing Revenue TransactionProcessingRevenue	84000000	usd
CY2023Q3	dfs	Transaction Processing Revenue TransactionProcessingRevenue	82000000	usd
	us-gaap	Noninterest Income NoninterestIncome	2485000000	usd
	us-gaap	Noninterest Income NoninterestIncome	1983000000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2032000000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1788000000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	771000000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	792000000	usd
	us-gaap	Professional Fees ProfessionalFees	911000000	usd
	us-gaap	Professional Fees ProfessionalFees	729000000	usd
	us-gaap	Occupancy Net OccupancyNet	68000000	usd
	us-gaap	Occupancy Net OccupancyNet	64000000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	761000000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	540000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	5070000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	4351000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4372000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3154000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1128000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	724000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3162000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2351000000	usd
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	12.61
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.23
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	12.61
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.22
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	128000000	usd
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	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	114000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-92000000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3486000000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2196000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1756000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	314000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	1442000000	usd
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	dei	Entity File Number EntityFileNumber	001-33378
	dei	Entity Registrant Name EntityRegistrantName	DISCOVER FINANCIAL SERVICES
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	36-2517428
	dei	Entity Address Address Line1 EntityAddressAddressLine1	2500 Lake Cook Road
	dei	Entity Address City Or Town EntityAddressCityOrTown	Riverwoods
	dei	Local Phone Number LocalPhoneNumber	405-0900
	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
	dei	Trading Symbol TradingSymbol	DFS
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2024Q3	us-gaap	Marketable Securities MarketableSecurities	14865000000	usd
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CY2024Q3	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	8484000000	usd
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CY2024Q3	dfs	Financing Receivable Before Allowance For Credit Loss Excluding Loans Held For Sale FinancingReceivableBeforeAllowanceForCreditLossExcludingLoansHeldForSale	118509000000	usd
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CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	126993000000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	128409000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8512000000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9283000000	usd
CY2024Q3	us-gaap	Notes Receivable Net NotesReceivableNet	118481000000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	119126000000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1085000000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1091000000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	255000000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	255000000	usd
CY2024Q3	us-gaap	Other Assets OtherAssets	5371000000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	5858000000	usd
CY2024Q3	us-gaap	Assets Assets	151615000000	usd
CY2023Q4	us-gaap	Assets Assets	151713000000	usd
CY2024Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	108356000000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	107493000000	usd
CY2024Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1496000000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1438000000	usd
CY2024Q3	us-gaap	Deposits Deposits	109852000000	usd
CY2023Q4	us-gaap	Deposits Deposits	108931000000	usd
CY2024Q3	us-gaap	Collateralized Financings CollateralizedFinancings	750000000	usd
CY2023Q4	us-gaap	Collateralized Financings CollateralizedFinancings	750000000	usd
CY2024Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	17427000000	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	20581000000	usd
CY2024Q3	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	6477000000	usd
CY2024Q3	us-gaap	Marketable Securities MarketableSecurities	14865000000	usd
CY2023Q4	us-gaap	Marketable Securities MarketableSecurities	13655000000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	8484000000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	0	usd
CY2024Q3	dfs	Financing Receivable Before Allowance For Credit Loss Excluding Loans Held For Sale FinancingReceivableBeforeAllowanceForCreditLossExcludingLoansHeldForSale	118509000000	usd
CY2023Q4	dfs	Financing Receivable Before Allowance For Credit Loss Excluding Loans Held For Sale FinancingReceivableBeforeAllowanceForCreditLossExcludingLoansHeldForSale	128409000000	usd
CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	126993000000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	128409000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8512000000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9283000000	usd
CY2024Q3	us-gaap	Notes Receivable Net NotesReceivableNet	118481000000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	119126000000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1085000000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1091000000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	255000000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	255000000	usd
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CY2023Q4	us-gaap	Other Assets OtherAssets	5858000000	usd
CY2024Q3	us-gaap	Assets Assets	151615000000	usd
CY2023Q4	us-gaap	Assets Assets	151713000000	usd
CY2024Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	108356000000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	107493000000	usd
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CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1438000000	usd
CY2024Q3	us-gaap	Deposits Deposits	109852000000	usd
CY2023Q4	us-gaap	Deposits Deposits	108931000000	usd
CY2023Q4	us-gaap	Collateralized Financings CollateralizedFinancings	750000000	usd
CY2024Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	17427000000	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	20581000000	usd
CY2024Q3	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	6477000000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	7216000000	usd
CY2024Q3	us-gaap	Liabilities Liabilities	134506000000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	137478000000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	572469165	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	570837720	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	6000000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	6000000	usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2024Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	10700	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	10700	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	10700	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	1056000000	usd
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	1056000000	usd
CY2024Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4633000000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	7216000000	usd
CY2024Q3	us-gaap	Liabilities Liabilities	134506000000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	137478000000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
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CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	572469165	shares
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CY2024Q3	us-gaap	Common Stock Value CommonStockValue	6000000	usd
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CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000000	shares
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CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	10700	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	10700	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	1056000000	usd
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	1056000000	usd
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CY2024Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	321255534	shares
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	320734860	shares
CY2024Q3	us-gaap	Treasury Stock Value TreasuryStockValue	21072000000	usd
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	21010000000	usd
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CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	151713000000	usd
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CY2024Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	321255534	shares
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CY2024Q3	us-gaap	Treasury Stock Value TreasuryStockValue	21072000000	usd
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	21010000000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	17109000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	14235000000	usd
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CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	151713000000	usd
CY2024Q3	us-gaap	Interest And Fee Income Loans Consumer Installment Credit Card InterestAndFeeIncomeLoansConsumerInstallmentCreditCard	4092000000	usd
	us-gaap	Interest And Fee Income Loans Consumer Installment Credit Card InterestAndFeeIncomeLoansConsumerInstallmentCreditCard	11989000000	usd
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CY2023Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	1288000000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	4365000000	usd
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	dfs	Protectionproductsrevenue Protectionproductsrevenue	126000000	usd
	dfs	Protectionproductsrevenue Protectionproductsrevenue	129000000	usd
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	dfs	Loanfeeincome Loanfeeincome	619000000	usd
	dfs	Loanfeeincome Loanfeeincome	546000000	usd
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	dfs	Other Non Interest Income Subject To Asc606 OtherNonInterestIncomeSubjectToASC606	357000000	usd
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	us-gaap	Interest Expense Operating InterestExpenseOperating	4365000000	usd
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CY2024Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3655000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10666000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9631000000	usd
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CY2023Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	283000000	usd
CY2024Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	197000000	usd
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	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	527000000	usd
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	438000000	usd
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CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	322000000	usd
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CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	586000000	usd
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CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.32
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CY2024Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	263000000	usd
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CY2024Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	197000000	usd
CY2023Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	149000000	usd
CY2024Q3	us-gaap	Professional Fees ProfessionalFees	323000000	usd
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CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	1564000000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1192000000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	761000000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	322000000	usd
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CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	870000000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	586000000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	834000000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	550000000	usd
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.32
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.21
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CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	870000000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	586000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	239000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-83000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	176000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-20000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	415000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-103000000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1285000000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	483000000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	13382000000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	586000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-103000000	usd
CY2023Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4000000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	3000000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	9000000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.70
CY2023Q3	us-gaap	Dividends Common Stock DividendsCommonStock	177000000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	13665000000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	16010000000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	870000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	415000000	usd
CY2024Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	8000000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	3000000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	27000000	usd
CY2024Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.70
CY2024Q3	us-gaap	Dividends Common Stock DividendsCommonStock	177000000	usd
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.32
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	870000000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	586000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	239000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-83000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	176000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-20000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	415000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-103000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	242000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-234000000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1285000000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	483000000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	13382000000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	586000000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-103000000	usd
CY2023Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4000000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	3000000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	9000000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.70
CY2023Q3	us-gaap	Dividends Common Stock DividendsCommonStock	177000000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	13665000000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	16010000000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	870000000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	415000000	usd
CY2024Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	8000000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	3000000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	27000000	usd
CY2024Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.70
CY2024Q3	us-gaap	Dividends Common Stock DividendsCommonStock	177000000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	17109000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	13895000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-234000000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1955000000	usd
	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	9000000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	43000000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.00
	us-gaap	Dividends Common Stock DividendsCommonStock	513000000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	13665000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	14235000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	242000000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	62000000	usd
	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	10000000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	70000000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.10
	us-gaap	Dividends Common Stock DividendsCommonStock	531000000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	17109000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3709000000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	17109000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	13895000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-234000000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1955000000	usd
	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	9000000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	43000000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.00
	us-gaap	Dividends Common Stock DividendsCommonStock	513000000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	13665000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	14235000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	242000000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	62000000	usd
	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	10000000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	70000000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.10
	us-gaap	Dividends Common Stock DividendsCommonStock	531000000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	17109000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3709000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	4109000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	84000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-508000000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	269000000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	354000000	usd
	dfs	Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans	324000000	usd
	dfs	Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans	335000000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-45000000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-40000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	70000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0	usd
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	60000000	usd
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	63000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-78000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	436000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-650000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-30000000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6445000000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5687000000	usd
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	734000000	usd
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1568000000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1431000000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2480000000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2627000000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	12000000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	12000000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	35000000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	49000000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	1554000000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	0	usd
	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	4067000000	usd
	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	13145000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	4109000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	84000000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-508000000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	269000000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	354000000	usd
	dfs	Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans	324000000	usd
	dfs	Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans Amortizationofdeferredrevenuesandaccretionofaccretableyieldonacquiredloans	335000000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-45000000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-40000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	70000000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0	usd
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	60000000	usd
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	63000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-78000000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	436000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-650000000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-30000000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6445000000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5687000000	usd
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	734000000	usd
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1568000000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2480000000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2627000000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	12000000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	12000000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	35000000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	49000000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	1554000000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	0	usd
	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	4067000000	usd
	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	13145000000	usd
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	2000000	usd
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	4000000	usd
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	44000000	usd
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	60000000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	59000000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	205000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	235000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4370000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14669000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	888000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	12348000000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	2232000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	2486000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1489000000	usd
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	usd
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	523000000	usd
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	751000000	usd
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	1808000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	10000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	9000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	62000000	usd
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	2000000	usd
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	4000000	usd
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	44000000	usd
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	60000000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	59000000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	205000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	235000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4370000000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14669000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	888000000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	12348000000	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	usd
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	2232000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	2486000000	usd
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1489000000	usd
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	usd
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	523000000	usd
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	751000000	usd
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	1808000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	10000000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	9000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	62000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1937000000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	579000000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	560000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2980000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9318000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-905000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	336000000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11728000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8897000000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10823000000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9233000000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10787000000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9194000000	usd
CY2024Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	36000000	usd
CY2023Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	39000000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10823000000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9233000000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	8484000000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
	us-gaap	Use Of Estimates UseOfEstimates	The preparation of financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and related disclosures. These estimates are based on information available as of the date of the condensed consolidated financial statements. The Company believes that the estimates used in the preparation of the condensed consolidated financial statements are reasonable. Actual results could differ from these estimates.
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1937000000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	579000000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	560000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2980000000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9318000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-905000000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	336000000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11728000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8897000000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10823000000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9233000000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10787000000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9194000000	usd
CY2024Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	36000000	usd
CY2023Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	39000000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	10823000000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9233000000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	8484000000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
	us-gaap	Use Of Estimates UseOfEstimates	The preparation of financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and related disclosures. These estimates are based on information available as of the date of the condensed consolidated financial statements. The Company believes that the estimates used in the preparation of the condensed consolidated financial statements are reasonable. Actual results could differ from these estimates.
CY2024Q3	us-gaap	Other Short Term Investments OtherShortTermInvestments	735000000	usd
CY2023Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	0	usd
CY2024Q3	us-gaap	Marketable Securities MarketableSecurities	14865000000	usd
CY2023Q4	us-gaap	Marketable Securities MarketableSecurities	13655000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14470000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	146000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	26000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	14590000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	275000000	usd
CY2024Q3	us-gaap	Other Short Term Investments OtherShortTermInvestments	735000000	usd
CY2023Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	0	usd
CY2024Q3	us-gaap	Marketable Securities MarketableSecurities	14865000000	usd
CY2023Q4	us-gaap	Marketable Securities MarketableSecurities	13655000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14470000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	146000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	26000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	14590000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	275000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	17000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	260000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	13451000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	52000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	101000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13402000000	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	253000000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	19000000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	234000000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	2193000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	17000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	260000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	13451000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	52000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	101000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13402000000	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	253000000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	19000000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	234000000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2024Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	2193000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	11844000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	179000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	254000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14470000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	275000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	275000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	2183000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	11976000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	181000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	250000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	14590000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	260000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	260000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	11844000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	179000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	254000000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14470000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	275000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	275000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	2183000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	11976000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	181000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	250000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	14590000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	260000000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	260000000	usd
	us-gaap	Investment Program Proportional Amortization Method Policy Election InvestmentProgramProportionalAmortizationMethodPolicyElection	true
CY2024Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	451000000	usd
CY2023Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	514000000	usd
CY2024Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	15000000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	46000000	usd
CY2024Q3	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	17000000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	52000000	usd
	dfs	Loan Portfolio Segments LoanPortfolioSegments	2	segment
	dfs	Loan Portfolio Segments LoanPortfolioSegments	2	segment
CY2024Q3	dfs	Financing Receivable Before Allowance For Credit Loss Excluding Loans Held For Sale FinancingReceivableBeforeAllowanceForCreditLossExcludingLoansHeldForSale	118509000000	usd
CY2023Q4	dfs	Financing Receivable Before Allowance For Credit Loss Excluding Loans Held For Sale FinancingReceivableBeforeAllowanceForCreditLossExcludingLoansHeldForSale	128409000000	usd
CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	126993000000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	128409000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8512000000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9283000000	usd
CY2024Q3	us-gaap	Notes Receivable Net NotesReceivableNet	118481000000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	119126000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3749000000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5388000000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	868000000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	4520000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8512000000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	7374000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4103000000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	3406000000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	662000000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	2744000000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8665000000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-31000000	usd
	us-gaap	Investment Program Proportional Amortization Method Policy Election InvestmentProgramProportionalAmortizationMethodPolicyElection	true
CY2024Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	451000000	usd
CY2023Q4	us-gaap	Amortization Method Qualified Affordable Housing Project Investments AmortizationMethodQualifiedAffordableHousingProjectInvestments	514000000	usd
CY2024Q3	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	15000000	usd
	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	46000000	usd
CY2024Q3	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	17000000	usd
	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	52000000	usd
	dfs	Loan Portfolio Segments LoanPortfolioSegments	2	segment
	dfs	Loan Portfolio Segments LoanPortfolioSegments	2	segment
CY2024Q3	dfs	Financing Receivable Before Allowance For Credit Loss Excluding Loans Held For Sale FinancingReceivableBeforeAllowanceForCreditLossExcludingLoansHeldForSale	118509000000	usd
CY2023Q4	dfs	Financing Receivable Before Allowance For Credit Loss Excluding Loans Held For Sale FinancingReceivableBeforeAllowanceForCreditLossExcludingLoansHeldForSale	128409000000	usd
CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	126993000000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	128409000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8512000000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9283000000	usd
CY2024Q3	us-gaap	Notes Receivable Net NotesReceivableNet	118481000000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	119126000000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8481000000	usd
CY2024Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1473000000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	217000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3749000000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5388000000	usd
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	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	4520000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8512000000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	7374000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4103000000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	3406000000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	662000000	usd
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CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8665000000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-31000000	usd
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CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8500000000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-31000000	usd
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CY2024Q3	dfs	Expected Eoy Unemployment Rate ExpectedEOYUnemploymentRate	0.0435
CY2024Q3	dfs	Expected Future Peak Unemployment Rate ExpectedFuturePeakUnemploymentRate	0.0462
CY2024Q3	dfs	Expected Eoy Annualized Increase In Gdp ExpectedEOYAnnualizedIncreaseInGDP	0.0254
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CY2024Q3	dfs	Expected Eoy Unemployment Rate ExpectedEOYUnemploymentRate	0.0435
CY2024Q3	dfs	Expected Future Peak Unemployment Rate ExpectedFuturePeakUnemploymentRate	0.0462
CY2024Q3	dfs	Expected Eoy Annualized Increase In Gdp ExpectedEOYAnnualizedIncreaseInGDP	0.0254
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CY2023Q3	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
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CY2023Q4	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
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CY2023Q3	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
CY2024Q1	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
CY2024Q3	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
CY2023Q4	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
	dfs	Financing Receivable Allowancefor Credit Loss Reversion Period FinancingReceivableAllowanceforCreditLossReversionPeriod	P12M
	dfs	Financing Receivable Allowancefor Credit Loss Reversion Period FinancingReceivableAllowanceforCreditLossReversionPeriod	P12M
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CY2023Q3	dfs	Interest And Fees Accrued Subsequently Charged Off Net Of Recoveries InterestAndFeesAccruedSubsequentlyChargedOffNetOfRecoveries	176000000	usd
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CY2023Q4	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
	dfs	Financing Receivable Allowancefor Credit Loss Reasonableand Supportable Forecast Period FinancingReceivableAllowanceforCreditLossReasonableandSupportableForecastPeriod	P18M
	dfs	Financing Receivable Allowancefor Credit Loss Reversion Period FinancingReceivableAllowanceforCreditLossReversionPeriod	P12M
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	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-12000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-38000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-122000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-30000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-92000000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	41000000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	128000000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	169000000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	41000000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	128000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	38000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	9000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	29000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-112000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-27000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-85000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	150000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	36000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	114000000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-188000000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-142000000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-188000000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-46000000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-142000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-172000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-42000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-130000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-50000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-12000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-38000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	-122000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-30000000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-92000000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1192000000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	761000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4372000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3154000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1128000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	724000000	usd
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.258
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.230
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4372000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3154000000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	175000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1128000000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	724000000	usd
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.258
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.230
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	870000000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	586000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	62000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	62000000	usd
CY2023Q3	dfs	Net Income Loss Available To Common Stockholders Incl Participating Securities NetIncomeLossAvailableToCommonStockholdersInclParticipatingSecurities	555000000	usd
	dfs	Net Income Loss Available To Common Stockholders Incl Participating Securities NetIncomeLossAvailableToCommonStockholdersInclParticipatingSecurities	3182000000	usd
	dfs	Net Income Loss Available To Common Stockholders Incl Participating Securities NetIncomeLossAvailableToCommonStockholdersInclParticipatingSecurities	2368000000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	20000000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	17000000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	834000000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	834000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3162000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	3162000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2351000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	2351000000	usd
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	251000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	255000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	251000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	255000000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	12.61
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.23
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	12.61
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.22
	us-gaap	Net Income Loss NetIncomeLoss	3244000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	2430000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	62000000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	62000000	usd
	dfs	Net Income Loss Available To Common Stockholders Incl Participating Securities NetIncomeLossAvailableToCommonStockholdersInclParticipatingSecurities	3182000000	usd
	dfs	Net Income Loss Available To Common Stockholders Incl Participating Securities NetIncomeLossAvailableToCommonStockholdersInclParticipatingSecurities	2368000000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	20000000	usd
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	17000000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	834000000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	834000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3162000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	3162000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2351000000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	2351000000	usd
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	251000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	255000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	251000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	255000000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	12.61
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	9.23
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	12.61
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	9.22
CY2024Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	0	usd
CY2024Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
CY2024Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
CY2023Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
	dfs	Loss Contingency Accrual Provision For Other Settlement Concessions LossContingencyAccrualProvisionForOtherSettlementConcessions	76000000	usd
CY2024Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	0	usd
CY2024Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
CY2024Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
CY2023Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	0	usd
	dfs	Loss Contingency Accrual Provision For Other Settlement Concessions LossContingencyAccrualProvisionForOtherSettlementConcessions	76000000	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	37000000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	4000000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	0	usd
CY2024Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2024Q3	dfs	Derivative Collateral Rightto Reclaim Cashand Securities DerivativeCollateralRighttoReclaimCashandSecurities	37000000	usd
CY2023Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2023Q4	dfs	Derivative Collateral Rightto Reclaim Cashand Securities DerivativeCollateralRighttoReclaimCashandSecurities	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	4000000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2024Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	5112000000	usd
CY2024Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	1457000000	usd
CY2024Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3655000000	usd
CY2024Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1473000000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	798000000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	1788000000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1192000000	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	37000000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	4000000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	0	usd
CY2024Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2024Q3	dfs	Derivative Collateral Rightto Reclaim Cashand Securities DerivativeCollateralRighttoReclaimCashandSecurities	37000000	usd
CY2023Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2023Q4	dfs	Derivative Collateral Rightto Reclaim Cashand Securities DerivativeCollateralRighttoReclaimCashandSecurities	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	4000000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2024Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	5112000000	usd
CY2024Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	1457000000	usd
CY2024Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3655000000	usd
CY2024Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1473000000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	798000000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	1788000000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1192000000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	4610000000	usd
CY2023Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	1288000000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3322000000	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1702000000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	705000000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	1564000000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	761000000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	15031000000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	4365000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10666000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3709000000	usd
	us-gaap	Noninterest Income NoninterestIncome	2485000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	5070000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4372000000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	12977000000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	3346000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9631000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	4109000000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	4610000000	usd
CY2023Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	1288000000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3322000000	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	1702000000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	705000000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	1564000000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	761000000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	15031000000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	4365000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10666000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3709000000	usd
	us-gaap	Noninterest Income NoninterestIncome	2485000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	5070000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4372000000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	12977000000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	3346000000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9631000000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	4109000000	usd
	us-gaap	Noninterest Income NoninterestIncome	1983000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	4351000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3154000000	usd
CY2024Q3	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	363000000	usd
CY2024Q3	dfs	Protectionproductsrevenue Protectionproductsrevenue	42000000	usd
CY2024Q3	dfs	Transaction Processing Revenue TransactionProcessingRevenue	84000000	usd
CY2024Q3	dfs	Noninterest Income Other Subject To Asc606 NoninterestIncomeOtherSubjectToASC606	95000000	usd
CY2024Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	584000000	usd
CY2024Q3	dfs	Loanfeeincome Loanfeeincome	214000000	usd
CY2024Q3	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	214000000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	798000000	usd
CY2023Q3	dfs	Protectionproductsrevenue Protectionproductsrevenue	42000000	usd
CY2023Q3	dfs	Transaction Processing Revenue TransactionProcessingRevenue	82000000	usd
CY2023Q3	dfs	Noninterest Income Other Subject To Asc606 NoninterestIncomeOtherSubjectToASC606	21000000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	505000000	usd
CY2023Q3	dfs	Loanfeeincome Loanfeeincome	194000000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	6000000	usd
CY2023Q3	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	200000000	usd
	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	1121000000	usd
	dfs	Protectionproductsrevenue Protectionproductsrevenue	126000000	usd
	dfs	Transaction Processing Revenue TransactionProcessingRevenue	262000000	usd
	dfs	Noninterest Income Other Subject To Asc606 NoninterestIncomeOtherSubjectToASC606	357000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1866000000	usd
	dfs	Loanfeeincome Loanfeeincome	619000000	usd
	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	619000000	usd
	us-gaap	Noninterest Income NoninterestIncome	2485000000	usd
	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	1027000000	usd
	dfs	Protectionproductsrevenue Protectionproductsrevenue	129000000	usd
	dfs	Transaction Processing Revenue TransactionProcessingRevenue	221000000	usd
	dfs	Noninterest Income Other Subject To Asc606 NoninterestIncomeOtherSubjectToASC606	71000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1448000000	usd
	dfs	Loanfeeincome Loanfeeincome	546000000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-11000000	usd
	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	535000000	usd
	us-gaap	Noninterest Income NoninterestIncome	1983000000	usd
	us-gaap	Noninterest Expense NoninterestExpense	4351000000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3154000000	usd
CY2024Q3	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	363000000	usd
CY2024Q3	dfs	Protectionproductsrevenue Protectionproductsrevenue	42000000	usd
CY2024Q3	dfs	Transaction Processing Revenue TransactionProcessingRevenue	84000000	usd
CY2024Q3	dfs	Noninterest Income Other Subject To Asc606 NoninterestIncomeOtherSubjectToASC606	95000000	usd
CY2024Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	584000000	usd
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CY2024Q3	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	214000000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	798000000	usd
CY2023Q3	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	360000000	usd
CY2023Q3	dfs	Protectionproductsrevenue Protectionproductsrevenue	42000000	usd
CY2023Q3	dfs	Transaction Processing Revenue TransactionProcessingRevenue	82000000	usd
CY2023Q3	dfs	Loanfeeincome Loanfeeincome	194000000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	6000000	usd
CY2023Q3	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	200000000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	705000000	usd
	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	1121000000	usd
	dfs	Protectionproductsrevenue Protectionproductsrevenue	126000000	usd
	dfs	Transaction Processing Revenue TransactionProcessingRevenue	262000000	usd
	dfs	Noninterest Income Other Subject To Asc606 NoninterestIncomeOtherSubjectToASC606	357000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1866000000	usd
	dfs	Loanfeeincome Loanfeeincome	619000000	usd
	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	619000000	usd
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	dfs	Discount And Interchange Revenue DiscountAndInterchangeRevenue	1027000000	usd
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	dfs	Transaction Processing Revenue TransactionProcessingRevenue	221000000	usd
	dfs	Noninterest Income Other Subject To Asc606 NoninterestIncomeOtherSubjectToASC606	71000000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1448000000	usd
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	us-gaap	Revenue Not From Contract With Customer Excluding Interest Income RevenueNotFromContractWithCustomerExcludingInterestIncome	535000000	usd
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CY2024Q3	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	779000000	usd
CY2023Q3	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	787000000	usd
	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	2200000000	usd
	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	2300000000	usd
CY2024Q3	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	2000000	usd
CY2023Q3	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	3000000	usd
	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	6000000	usd
	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	13000000	usd
	us-gaap	Noninterest Income NoninterestIncome	1983000000	usd
CY2024Q3	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	779000000	usd
CY2023Q3	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	787000000	usd
	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	2200000000	usd
	dfs	Customer Rewardsand Issuer Interchange CustomerRewardsandIssuerInterchange	2300000000	usd
CY2024Q3	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	2000000	usd
CY2023Q3	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	3000000	usd
	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	6000000	usd
	us-gaap	Interest Expense Domestic Deposit Liabilities Withdrawal Penalties InterestExpenseDomesticDepositLiabilitiesWithdrawalPenalties	13000000	usd

Files In Submission

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dfs-20240930_def.xml	Edgar Link	unprocessable
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FilingSummary.xml	Edgar Link	unprocessable

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2024 Q4 Form 10-Q Financial Statement

#000139361224000076 Filed on December 23, 2024

Income Statement

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Facts In Submission

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$DFS Discover Financial Services Stock $dfs

2024 Q4 Form 10-Q Financial Statement

#000139361224000076 Filed on December 23, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DFS
Discover Financial Services Stock $dfs