Interest income Interest and Dividend Income, Operating [Abstract] Interest expense Interest Expense [Abstract] Noninterest Income [Abstract] Noninterest income Noninterest expense Noninterest Expense [Abstract] Net Income (Loss) Available to Common Stockholders, Basic Wells Fargo net income applicable to common stock (numerator) Wells Fargo net income applicable to common stock Wells Fargo net income applicable to common stock Net Income (Loss) Attributable to Parent Net income (Loss) Wells Fargo net income Net income Net change in noncontrolling interests Less: Net income from noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Net income NET INCOME BEFORE NONCONTROLLING INTERESTS Net income before noncontrolling interests Income tax expense Income tax expense Income Tax Expense (Benefit) Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income (loss) before income tax expense (benefit) and equity in undistributed income of subsidiaries INCOME BEFORE INCOME TAX EXPENSE Income before income tax expense Total noninterest expense Noninterest Expense Other Noninterest Expense Other Net occupancy Occupancy, Net Equipment Equipment Expense Employee benefits Other Labor-related Expenses Total noninterest income Noninterest Income Other Noninterest Income, Other Operating Income Net gains (losses) on debt securities available for sale Gain (Loss) on Sale of Debt Investments Insurance Insurance Premiums earned on the income statement for all insurance and reinsurance contracts after subtracting any amounts ceded to another insurer and adding premiums assumed from other insurers. Includes income from agency and brokerage operations (including income from sales of annuities and supplemental contracts); service charges, commissions and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities and universal life products. Other fees Fees and Commissions, Other Trust and investment fees Fees and Commissions, Fiduciary and Trust Activities, Total Fees and Commissions, Fiduciary and Trust Activities Net interest income after provision for credit losses Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Provision for Loan, Lease, and Other Losses Provision for credit losses Provision for credit losses Net interest income NET INTEREST INCOME Interest Income (Expense), Net Total interest expense Total interest expense Interest Expense Long-term debt Interest Expense, Long-term Debt, Total Interest Expense, Long-term Debt Short-term borrowings Interest Expense, Short-term Borrowings, Total Interest Expense, Short-term Borrowings Deposits Interest Expense, Deposits, Total Interest Expense, Deposits Total interest income Total interest income Interest and Dividend Income, Operating Other interest income Other Interest and Dividend Income Loans Interest and Fee Income, Loans and Leases Held-in-portfolio, Total Interest and Fee Income, Loans and Leases Held-in-portfolio Mortgages held for sale Interest and Fee Income, Loans Held-for-sale, Mortgages Securities available for sale Interest and Dividend Income, Securities, Available-for-sale Assets [Abstract] Assets Liabilities [Abstract] Liabilities Cash, Loan and Dividend Restrictions (Details) [Abstract] Cash Loan And Dividend Restrictions Details. Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract] Cash, Loan and Dividend Restrictions (Textual) [Abstract] Average Cash Reserve Deposit Required And Made Federal Reserve Banks Average required reserve balance on deposits Average daily balance for period of deposits required and made with Federal Reserve Banks pursuant to Federal Reserve Board regulations. Amount Available for Dividend Distribution without Prior Approval from Regulatory Agency Additional dividends that could have been declared by national and state-chartered subsidiary bank/ Nonbank Subsidiaries Cash, Loan and Dividend Restrictions [Abstract] Cash Loan And Dividend Restrictions Abstract. Cash Loan And Dividend Restrictions Text Block Cash, Loan and Dividend Restrictions Cash Loan And Dividend Restrictions Text Block. Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity Total liabilities and equity Liabilities and Stockholders' Equity Total equity Beginning Balance Ending Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Minority Interest Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance Noncontrolling interests Noncontrolling interests Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Parent, WFFI, other and Wells Fargo stockholders' equity Total Wells Fargo stockholders' equity Total Wells Fargo stockholders' equity Unearned ESOP shares Unearned ESOP Shares Treasury Stock, Value Treasury stock - 10,131,394 shares and 67,346,829 shares Treasury Stock, Value, Ending Balance Treasury Stock, Value, Beginning Balance Treasury stock - XXX shares and 67,346,829 shares Cumulative other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Cumulative other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Retained earnings Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit) Additional paid-in capital Additional Paid in Capital, Total Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Ending Balance Additional Paid in Capital Common Stock, Value Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Value of common shares Common Stock, Value, Issued, Total Common stock - $1-2/3 par value, authorized 9,000,000,000 shares; issued 5,272,414,622 shares and 5,245,971,422 shares Preferred stock Preferred Stock, Value, Issued, Total Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value Wells Fargo stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Liabilities Third party liabilities Third party liabilities Total liabilities Total liabilities Long-term Debt Long-term debt, carried at fair value Long-term debt (includes $306 carried at fair value at December 31, 2010) Long-term debt Short-term Borrowings Short-term borrowings Short-term Borrowings, Total Short-term borrowings, Amount Total deposits Deposits Interest-bearing deposits Interest-bearing deposits Interest-bearing Deposit Liabilities Noninterest-bearing deposits Noninterest-bearing Deposit Liabilities, Total Noninterest-bearing Deposit Liabilities Assets Consolidated assets Total assets Total assets Other assets Other assets Other Assets Goodwill Goodwill, Beginning Balance Goodwill, Ending Balance Goodwill Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Net book value, premises and equipment Premises and equipment, net Servicing Asset at Amortized Value Balance, end of period Balance, beginning of period Amortized mortgage servicing rights, net Amortized Fair value, end of year Fair value, beginning of year Measured at fair value Servicing Asset at Fair Value, Amount MSRs (carried at fair value) Mortgage servicing rights measured at fair value Loans and Leases Receivable, Net Reported Amount Net loans Net loans Total Loans and Leases Receivable, Allowance Allowance for loan losses Loans and Leases Receivable, Allowance, Ending Balance Loans and Leases Receivable, Allowance, Beginning Balance Components: Allowance for loan losses Allowance for loan losses Allowance for loan losses Loans and Leases Receivable, Net of Deferred Income Loans Total recorded investment in loans Loans (includes $309 carried at fair value at December 31, 2010) Available-for-sale Securities Fair value Available-for-sale Securities, Total Securities available for sale Trading assets Trading Securities, Total Trading Securities Cash and due from banks at end of year Cash and due from banks at beginning of year Common stock, par value Common Stock, Par Value Common Stock, Shares Authorized Common stock, shares authorized Total shares authorized Common stock, shares issued Common Stock, Shares, Issued, Total Common Stock, Shares, Issued Treasury stock, shares Treasury Stock, Shares, Beginning Balance Treasury Stock, Shares, Ending Balance Treasury Stock, Shares Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Net change in: Increase (Decrease) in Operating Capital [Abstract] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Long-term debt: Proceeds from (Repayments of) Long-term Debt and Capital Securities [Abstract] Net change in cash and due from banks Cash and Cash Equivalents, Period Increase (Decrease) Net Cash Provided by (Used in) Financing Activities Net cash provided (used) by financing activities Net cash provided (used) by financing activities Excess Tax Benefit from Share-based Compensation, Financing Activities Excess tax benefits related to stock option payments Excess tax benefits related to stock option payments Cash dividends paid Payments of Dividends, Common Stock Common stock dividends Cash dividends paid Common stock dividends Repurchased Payments for Repurchase of Common Stock Proceeds from issuance Proceeds from Issuance of Common Stock Cash dividends paid Payments of Dividends, Preferred Stock and Preference Stock Cash dividends paid Proceeds from issuance Proceeds from Issuance of Long-term Debt and Capital Securities, Net, Total Proceeds from Issuance of Long-term Debt and Capital Securities, Net Proceeds from (Repayments of) Short-term Debt Net change in: Short-term borrowings Proceeds from (Repayments of) Short-term Debt, Total Net change in short-term borrowings Net change in: Deposits Increase (Decrease) in Deposits Deposits Increase (Decrease) in Deposits, Total Net cash provided (used) by investing activities Net Cash Provided by (Used in) Investing Activities Other, net Payments for (Proceeds from) Other Investing Activities Changes in MSRs from purchases and sales Payments for (Proceeds from) Mortgage Servicing Rights, Total Payments for (Proceeds from) Mortgage Servicing Rights Proceeds from sales of foreclosed assets Proceeds from Sale of Foreclosed Assets Net cash acquired from (paid for) acquisitions Payments to Acquire Businesses, Net of Cash Acquired Payments to Acquire Businesses, Net of Cash Acquired, Total Net cash paid for acquisitions Loans originated by nonbank entities Loans originated by nonbank entities Loans originated by nonbank entities The cash outflow for loans originated by nonbank entities. Principal collected on nonbank entities' loans The cash inflow from principal collected on nonbank entities' loans. Principal collected on nonbank entities' loans Payments to Acquire Available-for-sale Securities Purchases Payments to Acquire Available-for-sale Securities, Total Purchases Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Prepayments and maturities Proceeds from Sale of Available-for-sale Securities Proceeds from Sale of Available-for-sale Securities, Total Sales proceeds Other accrued expenses and liabilities, net Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Increase (Decrease) in Other Operating Assets Other assets, net Other assets, net Accrued interest payable Increase (Decrease) in Interest Payable, Net Increase (Decrease) in Accrued Interest Receivable, Net Accrued interest receivable Accrued interest receivable Increase (Decrease) in Deferred Income Taxes Deferred income taxes Deferred income taxes Proceeds from sales of and principal collected on mortgages originated for sale Proceeds from sales of and principal collected on mortgages originated for sale The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future. The cash inflow from collection of repayments from borrowers on loans that are secured with real estate mortgages and are held with the intention to resell in the near future. Payments for Origination of Mortgage Loans Held-for-sale Originations of MHFS Originations of MHFS Excess Tax Benefit from Share-based Compensation, Operating Activities Excess tax benefits related to stock option payments Excess tax benefits related to stock option payments Stock Option Plan Expense Stock options Stock option compensation expense Depreciation and amortization Depreciation, Amortization and Accretion, Net, Total Depreciation, Amortization and Accretion, Net Supplemental cash flow disclosures: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid, Net, Total Interest Paid, Net Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Period End Date Document Period End Date Document Type Document Type Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Earnings Per Share, Basic Earnings Per Share, Basic Per share Earnings per common share Diluted earnings per common share Per share Earnings Per Share, Diluted Common Stock, Dividends, Per Share, Declared Per share dividend amount requiring approval Dividends declared per common share Weighted Average Number of Shares Outstanding, Basic Average common shares outstanding (denominator) Average common shares outstanding Average common shares outstanding Weighted Average Number of Shares Outstanding, Diluted Average common shares outstanding Diluted average common shares outstanding (denominator) Diluted average common shares outstanding Net cash provided (used) by operating activities Net Cash Provided by (Used in) Operating Activities Net cash provided (used) by operating activities Business Combinations [Abstract] Business Combinations [Abstract] Business Combinations. Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Abstract] Federal Funds Sold, Securities Purchased Under Resale Agreements and Other Short-Term Investments Federal Funds Sold, Securities Purchased Under Resale Agreements And Other Short-Term Investments. Loans And Allowance For Credit Losses Abstract Loans and Allowance for Credit Losses [Abstract] Loans And Allowance For Credit Losses. Securitizations and Variable Interest Entities [Abstract] Securitizations and Variable Interest Entities [Abstract] Securitizations And Variable Interest Entities. Mortgage Banking Activities [Abstract] Mortgage Banking Activities [Abstract] Mortgage Banking Activities. Intangible Assets [Abstract] Intangible Assets [Abstract] Intangible Assets. Guarantees and Legal Actions [Abstract] Guarantees and Legal Actions [Abstract] Guarantees And Legal Actions. Fair Values of Assets and Liabilities [Abstract] Balances of Pension Plan [Abstract] Fair Values Of Assets And Liabilities. Condensed Consolidating Financial Statements [Abstract] Condensed Consolidated Financial Statements [Abstract] Condensed Consolidated Financial Statements [Abstract] Financial Statements. Other interest income Other Trading assets Trading assets Interest and dividend income from trading assets that are primarily securities, including corporate debt, U.S. government agency obligations and other securities that we acquire for short-term appreciation or other trading purposes, and the fair value of derivatives held for customer accommodation purposes or proprietary trading. Trading assets are carried at fair value, with realized and unrealized gains and losses recorded in noninterest income. Loans held for sale Loans held for sale The amount of interest income earned from loans held-for-sale, other than mortgage loans. Fees And Commissions Depositors Accounts Service charges on deposit accounts Service charges on deposit accounts Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (9) issuing stop payment orders; and (10) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits. ATM fees and check certification charges are included in other fees. Fees And Commissions Credit Card Card fees Income earned from debit card and credit card services including late, over limit, and annual fees. This item excludes interest income earned on credit card balances and transactions. Fees And Commission Mortgage Banking Mortgage banking Total mortgage banking noninterest income Mortgage banking The noninterest income derived from mortgage banking activities. Net Gains Losses From Equity Investments Net gains (losses) from equity investments Net gains (losses) from equity investments The revenue derived from investments, including but are not limited to investments in marketable equity securities, private equity, and principal investments: includes realized investment gains or losses. Salaries Salaries Expenditures for salaries, wages, and special allowances. Includes amounts paid to officers. Commission and incentive compensation Commission and incentive compensation Represents the expense recognized during the period arising from incentive compensation, bonuses, commissions, and awards. Also includes expenses from share-based compensation arrangements (for example, shares of stock, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Insurance And Deposit Assessments FDIC and other deposit assessments FDIC and other deposit assessments Expenditures for Federal Deposit Insurance Corporation and other deposit assessments. Mortgage Servicing Rights Abstract Mortgage servicing rights: Mortgage Servicing Rights. Federal Funds Sold Securities Purchased Under Resale Agreements And Other Short Term Investments Federal funds sold, securities purchased under resale agreements and other short-term investments Federal funds sold, securities purchased under resale agreements and other short-term investments The fair value of federal funds sold and securities purchased under agreements to resell that serve as collateral for borrowings and other short-term investments. Loans Held For Sale Net Loans held for sale Loans held for sale (includes $873 and $149 carried at fair value) The aggregate amount of loans receivable classified as held for sale (carried at fair value or lower of cost or market), excluding mortgages held for sale. Accrued expenses and other liabilities Accounts Payable and Accrued Liabilities, Total Accounts Payable and Accrued Liabilities Total deposits Unearned ESOP shares Increase Decrease in Trading Assets Trading assets Trading assets The net change during the reporting period in the carrying value of trading assets. Loans: Payments for (Proceeds from) Loans and Leases [Abstract] Securities available for sale: Payments for (Proceeds from) Investments [Abstract] Proceeds From Sales Including Participations Of Loans Originated For Investment By Banking Subsidiaries Proceeds from sales (including participations) of loans originated for investment by banking subsidiaries Proceeds from sales (including participations) of loans originated for investment by banking subsidiaries The net cash inflow from sales (including participations) of loans originated for investment by banking subsidiaries. Preferred stock: Dividends, Preferred Stock [Abstract] Common Stock Abstract Common stock: Common Stock. Guarantees And Legal Actions [Text Block] Guarantees and Legal Actions Guarantees and Legal Actions Disclosures on contracts requiring guaranteed payments based on an event or a change in an underlying asset, liability, rate or index. Mortgage Banking Activities [Text Block] Mortgage Banking Activities Mortgage Banking Activities Disclosures on mortgage banking activities that consist of residential and commercial originations and servicing. Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Business Combinations Business Combination Disclosure [Text Block] Securities Available for Sale Available-for-sale Securities [Text Block] Loans and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Intangible Assets Intangible Assets Disclosure [Text Block] Derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Text Block] Fair Value, by Balance Sheet Grouping [Text Block] Fair Value, by Balance Sheet Grouping Fair Values of Assets and Liabilities Preferred Stock Schedule of Stock by Class [Text Block] Employee Benefits and Other Expenses Pension and Other Postretirement Benefits Disclosure [Text Block] Earnings Per Common Share Text Block Earnings Per Share [Text Block] Operating Segments Segment Reporting Disclosure [Text Block] Condensed Consolidating Financial Statements Schedule of Condensed Financial Statements [Text Block] Regulatory and Agency Capital Requirements Text Block Regulatory Capital Requirements under Banking Regulations [Text Block] Comprehensive income: Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Components of other comprehensive income and related tax effects [Abstract] Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Translation adjustments Translation adjustments, Net of tax Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax Noncontrolling interests Stock Repurchased During Period, Value Common stock repurchased Common stock repurchased Common stock repurchased, shares Stock Repurchased During Period, Shares Stock Issued During Period Value StockIssuedDuringPeriodValueNewIssues Common stock issued Dollar value of issued common stock whether issued at par value, no par or stated value. This item includes treasury stock repurchased by the entity. Note: elements for number of common shares, par value and other disclosure concepts are in another section within stockholders' equity. Unearned ESOP shares Unearned ESOP Shares. Common stock Preferred stock Additional paid-in capital Retained earnings Cumulative other comprehensive income Treasury stock Noncontrolling interests Net change Stockholders' Equity, Period Increase (Decrease) Net change, shares Stock Issued During Period, Shares, Period Increase (Decrease) Other Comprehensive Income, Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax Reclassification of net gains on cash flow hedges included in net income, Net of tax Reclassification of net gains on cash flow hedges included in net income, Net of tax Reclassification of net gains (losses) on cash flow hedges included in net income Stocks Issued During Period Shares Common stock issued, shares Common stock issued, shares Stock issued during the period. Noncontrolling interests Minority interest increase from stock issuance Shares, Beginning Balance Shares, Ending Balance Shares, Issued Federal Funds Sold, Securities Purchased Under Resale Agreements and Other Short-Term Investments Text Block Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Federal funds sold, securities purchased under resale agreements and other short-term investments Detail of federal funds sold, securities purchased under resale agreements and other short-term investments. Statement [Table]