-Network: (11 - Statement - Statement Of Financial Position Unclassified - Deposit Based Operations)

-Statement of Financial Position [Abstract] {ID1}

-Statement [Table] {ID2}

-Statement [Line Items] {ID3}

-Assets: {ID4}

Cash and due from banks {ID5}

Federal funds sold and resale agreements {ID6}

Interest-bearing deposits at other banks {ID7}

Cash and cash equivalents {ID8}

Securities available for sale {ID9}

Securities held to maturity {ID10}

Mortgage loans held for sale {ID11}

Loans held for investment {ID12}

Less: Allowance for loan and lease losses {ID13}

Net loans held for investment {ID14}

Accounts receivable from securitizations {ID15}

Premises and equipment, net {ID16}

Interest receivable {ID17}

Goodwill {ID18}

Other {ID19}

Total assets {ID20}

-Liabilities: {ID21}

Non-interest-bearing deposits {ID22}

Interest-bearing deposits {ID23}

Total deposits {ID24}

Senior and subordinated notes {ID25}

Other borrowings {ID26}

Interest payable {ID27}

Other {ID28}

Total liabilities {ID29}

-Stockholders' Equity: {ID30}

Preferred stock, par value $.01 per share; authorized 50,000,000 shares, zero and 3,555,199 issued or outstanding as of June 30, 2009 and December 31, 2008, respectively {ID31}

Common stock, par value $.01 per share; authorized 1,000,000,000 shares, 501,853,170 and 438,434,235 issued as of June 30, 2009 and December 31, 2008, respectively {ID32}

Paid-in capital, net {ID33}

Retained earnings {ID34}

Cumulative other comprehensive loss {ID35}

Less: Treasury stock, at cost; 46,911,870 and 46,637,241 shares as of June 30, 2009 and December 31, 2008, respectively {ID36}

Total stockholders' equity {ID37}

Total liabilities and stockholders' equity {ID38}

-Network: (12 - Statement - Statement Of Financial Position Unclassified - Deposit Based Operations (Parenthetical))

-Statement of Financial Position [Abstract] {ID39}

-Statement [Table] {ID40}

-Statement [Line Items] {ID41}

Preferred stock, par value {ID42}

Preferred stock, authorized {ID43}

Preferred stock, issued {ID44}

Preferred stock, outstanding {ID45}

Common stock, par value {ID46}

Common stock, authorized {ID47}

Common stock, issued {ID48}

Treasury stock, shares {ID49}

-Network: (13 - Statement - Statement Of Income Interest Based Revenue)

-Income Statement [Abstract] {ID50}

-Statement [Table] {ID51}

-Statement [Line Items] {ID52}

-Interest Income: {ID53}

Loans held for investment, including past-due fees {ID54}

Investment securities {ID55}

Other {ID56}

Total interest income {ID57}

-Interest Expense: {ID58}

Deposits {ID59}

Senior and subordinated notes {ID60}

Other borrowings {ID61}

Total interest expense {ID62}

Net interest income {ID63}

Provision for loan and lease losses {ID64}

Net interest income after provision for loan and lease losses {ID65}

-Non-Interest Income: {ID66}

Servicing and securitizations {ID67}

Service charges and other customer-related fees {ID68}

Mortgage servicing and other {ID69}

Interchange {ID70}

Net impairment losses recognized in earnings {ID71}

Other {ID72}

Total non-interest income {ID73}

-Non-Interest Expense: {ID74}

Salaries and associate benefits {ID75}

Marketing {ID76}

Communications and data processing {ID77}

Supplies and equipment {ID78}

Occupancy {ID79}

Restructuring expense {ID80}

Other {ID81}

Total non-interest expense {ID82}

Income (loss) from continuing operations before income taxes {ID83}

Income tax (benefit) provision {ID84}

Income (loss) from continuing operations, net of tax {ID85}

Loss from discontinued operations, net of tax {ID86}

Net Income {ID87}

Net income (loss) available to common shareholders {ID88}

-Basic earnings per common share: {ID89}

Income (loss) from continuing operations {ID90}

Loss from discontinued operations {ID91}

Net income (loss) {ID92}

-Diluted earnings per common share: {ID93}

Income (loss) from continuing operations {ID94}

Loss from discontinued operations {ID95}

Net income (loss) {ID96}

Dividends paid per common share {ID97}

-Network: (14 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income)

-Statement of Stockholders' Equity [Abstract] {ID98}

-Statement [Table] {ID99}

-Statement, Equity Components [Axis] {ID100}

-Equity Component [Domain] {ID101}

Common Stock Shares {ID102}

Common Stock Amount {ID103}

Preferred Stock {ID104}

Paid-In Capital, Net {ID105}

Retained Earnings {ID106}

Cumulative Other Comprehensive Income (Loss) {ID107}

Treasury Stock {ID108}

-Statement [Line Items] {ID109}

Common Stock Amount {ID110}

Beginning Balance {ID111}

Beginning Balance {ID112}

Adjustment to initially apply the measurement date provision of FAS 158, net of income tax benefit of $317 {ID113}

-Comprehensive income: {ID114}

Net income {ID115}

-Other comprehensive income (loss), net of income tax: {ID116}

Unrealized gain/(losses) on securities, net of income taxes of $294,504 in 2009 and income tax benefit of $82,865 in 2008 {ID117}

Defined benefit pension plans, net of income tax benefit of $326 in 2009 and $1,388 in 2008 {ID118}

Foreign currency translation adjustments {ID119}

Unrealized gains/(loss) on cash flow hedging instruments, net of income taxes of $37,223 in 2009 and income tax benefit of $810 in 2008 {ID120}

Other comprehensive income {ID121}

Comprehensive income {ID122}

Cash dividends-Common stock $0.425 in 2009 and $0.75 in 2008 per share {ID123}

Cash dividends-Preferred stock 5% per annum {ID124}

Purchase of treasury stock {ID125}

Issuances of common stock and restricted stock, net of forfeitures {ID126}

Issuances of common stock and restricted stock, net of forfeitures {ID127}

Exercise of stock options and tax benefits of exercises and restricted stock vesting {ID128}

Exercise of stock options and tax benefits of exercises and restricted stock vesting {ID129}

Accretion of preferred stock discount {ID130}

Redemption of preferred stock {ID131}

Compensation expense for restricted stock awards and stock options {ID132}

Issuance of common stock for acquisition {ID133}

Issuance of common stock for acquisition {ID134}

Allocation of ESOP shares {ID135}

Ending Balance {ID136}

Ending Balance {ID137}

-Network: (15 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income (Parenthetical))

-Statement of Stockholders' Equity [Abstract] {ID138}

-Statement [Table] {ID139}

-Statement, Equity Components [Axis] {ID140}

-Equity Component [Domain] {ID141}

Common Stock Shares {ID142}

Common Stock Amount {ID143}

Preferred Stock {ID144}

Paid-In Capital, Net {ID145}

Retained Earnings {ID146}

Cumulative Other Comprehensive Income (Loss) {ID147}

Treasury Stock {ID148}

-Statement [Line Items] {ID149}

Adjustment to initially apply the measurement date provision of FAS 158, income tax benefit {ID150}

Unrealized gain/(losses) on securities, income taxes/benefit {ID151}

Defined benefit pension plans, income tax benefit {ID152}

Unrealized gains/(loss) in cash flow hedging instruments, income taxes/benefit {ID153}

Cash dividends, per share {ID154}

Cash dividends-Preferred stock, percent per annum {ID155}

-Network: (16 - Statement - Statement Of Cash Flows Indirect Deposit Based Operations)

-Statement of Cash Flows [Abstract] {ID156}

-Statement [Table] {ID157}

-Statement [Line Items] {ID158}

-Operating Activities: {ID159}

Income from continuing operations, net of tax {ID160}

Loss from discontinued operations, net of tax {ID161}

Net Income {ID162}

-Adjustments to reconcile net income to cash provided by operating activities: {ID163}

Provision for loan and lease losses {ID164}

Depreciation and amortization, net {ID165}

Gains on sales of securities available for sale {ID166}

Gain on sales of auto loans {ID167}

Gain on repurchase of senior notes {ID168}

-Mortgage loans held for sale: {ID169}

Transfers and originations {ID170}

Loss (Gain) on sales {ID171}

Proceeds from sales {ID172}

Stock plan compensation expense {ID173}

-Changes in assets and liabilities: {ID174}

(Increase) Decrease in interest receivable {ID175}

Decrease (Increase) in accounts receivable from securitizations {ID176}

Decrease (Increase) in other assets {ID177}

Decreases in interest payable {ID178}

Decreases in other liabilities {ID179}

Net cash used in operating activities attributable to discontinued operations {ID180}

Net cash provided by operating activities {ID181}

-Investing Activities: {ID182}

Purchases of securities available for sale {ID183}

Proceeds from maturities of securities available for sale {ID184}

Proceeds from sales of securities available for sale {ID185}

Proceeds from securitizations of loans {ID186}

Net decrease in loans held for investment {ID187}

Principal recoveries of loans previously charged off {ID188}

Additions of premises and equipment, net {ID189}

Net payment for companies acquired {ID190}

Net cash provided by investing activities attributable to discontinued operations {ID191}

Net cash provided by (used in) investing activities {ID192}

-Financing Activities: {ID193}

Net (decrease) increase in deposits {ID194}

Net decreases in other borrowings {ID195}

Maturities of senior notes {ID196}

Repurchases of senior notes {ID197}

Redemptions of acquired company debt and noncontrolling interest {ID198}

Issuance of senior notes {ID199}

Issuance of subordinated notes {ID200}

Redemption of preferred stock {ID201}

Purchases of treasury stock {ID202}

Dividends paid-common stock {ID203}

Dividends paid-preferred stock {ID204}

Net proceeds from issuances of common stock {ID205}

Proceeds from share based payment activities {ID206}

Net cash (used in) provided by financing activities attributable to discontinued operations {ID207}

Net cash used in financing activities {ID208}

Net decreases in cash and cash equivalents {ID209}

Cash and cash equivalents at beginning of year {ID210}

Cash and cash equivalents of acquired companies {ID211}

Cash and cash equivalents at end of period {ID212}

-Network: (17 - Disclosure - Notes to Financial Statements)

-Notes to Financial Statements [Abstract] {ID213}

Note 1 Significant Accounting Policies {ID214}

Note 2 Acquisitions {ID215}

Note 3 Loans Acquired in a Transfer {ID216}

Note 4 Discontinued Operations {ID217}

Note 5 Segments {ID218}

Note 6 Securities Available for Sale {ID219}

Note 7 Fair Values of Assets and Liabilities {ID220}

Note 8 Goodwill and Other Intangible Assets {ID221}

Note 9 Deposits and Borrowings {ID222}

Note 10 Shareholders' Equity, Comprehensive Income and Earnings Per Common Share {ID223}

Note 11 Mortgage Servicing Rights {ID224}

Note 12 Restructuring {ID225}

Note 13 Derivative Instruments and Hedging Activities {ID226}

Note 14 Securitizations {ID227}

Note 15 Commitments, Contingencies and Guarantees {ID228}

Note 16 Other Variable Interest Entities {ID229}

Note 17 Subsequent Events {ID230}

-Network: (18 - Disclosure - Document Information)

-Document Information [Text Block] {ID231}

Document Type {ID232}

Amendment Flag {ID233}

Amendment Description {ID234}

Document Period End Date {ID235}

-Network: (19 - Disclosure - Entity Information)

-Entity [Text Block] {ID236}

Trading Symbol {ID237}

Entity Registrant Name {ID238}

Entity Central Index Key {ID239}

Current Fiscal Year End Date {ID240}

Entity Well-known Seasoned Issuer {ID241}

Entity Current Reporting Status {ID242}

Entity Voluntary Filers {ID243}

Entity Filer Category {ID244}

Entity Common Stock, Shares Outstanding {ID245}

Entity Public Float {ID246}

CAPITAL ONE FINANCIAL CORP XBRL Taxonomy Presentation Networks