Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Commercial Portfolio Segment [Member] Commercial Portfolio Segment [Member] Consumer Portfolio Segment [Member] Consumer Portfolio Segment [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract] Schedule of Financing Receivables By Credit Impairment Method [Abstract] Schedule of Financing Receivables, by Credit Impairment Method. Allowance for Credit Losses, Collectively evaluated Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Allowance for Credit Losses, Individually evaluated Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance for credit losses, PCI loans Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality Total allowance for credit losses Financing Receivable, Allowance for Credit Losses Financing Receivable, Collectively evaluated Financing Receivable, Collectively Evaluated for Impairment Financing Receivable, Individually evaluated Financing Receivable, Individually Evaluated for Impairment Purchased Credit Impaired Loans Financing Receivable, Acquired with Deteriorated Credit Quality Loans Loans and Leases Receivable, Net of Deferred Income Change in accretable yield related to PCI loans [Abstract] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Total, beginning of period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Addition of accretable yield due to acquisitions Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Addition Due To Acquisitions The current period addition of accretable yield due to the acquisition of loans. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable Accretion into interest income Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Into Interest Income The current period recognition due to accretion into interest income of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Accretion into noninterest income due to sales Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion into Noninterest Income due to Sales The current period recognition due to accretion into noninterest income due to sales of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Reclassification from nonaccretable difference for loans with improving credit-related cash flows Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference Changes in expected cash flows that do not affect nonaccretable difference Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Changes In Expected Cash Flows That Do Not Affect Nonaccretable Difference Represents changes in interest cash flows for loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, due to the impact of modifications incorporated into the quarterly assessment of expected future cash flows and/or changes in interest rates on variable rate loans. Total, end of period Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Real estate 1-4 family first mortgage [Member] First Mortgage [Member] Real estate 1-4 family junior lien mortgage [Member] Second Mortgage [Member] Mortgage Loans on Real Estate, Loan Type [Axis] Mortgage Loans on Real Estate, Loan Type [Axis] Mortgage Loans on Real Estate, Loan Type [Domain] Mortgage Loans on Real Estate, Loan Type [Domain] Residential Mortgage [Member] Residential Mortgage [Member] Financing Receivable Acquired With Deteriorated Credit Quality [Axis] Financing Receivable Acquired With Deteriorated Credit Quality [Axis] Financing Receivable Acquired With Deteriorated Credit Quality. Financing Receivable Acquired With Deteriorated Credit Quality [Domain] Financing Receivable Acquired With Deteriorated Credit Quality [Domain] Financing Receivable Acquired With Deteriorated Credit Quality. Purchased Credit-Impaired Loans [Member] Financing Receivable Acquired With Deteriorated Credit Quality [Member] Financing Receivable Acquired With Deteriorated Credit Quality. Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] By FICO: Financing Receivables Acquired with Deteriorated Credit Quality by FICO [Abstract] Financing Receivables Acquired with Deteriorated Credit Quality by FICO. Less than 600 Financing Receivable, Recorded Investment, FICO Score Less Than 600 Financing receivables with FICO score less than 600. 600-639 Financing Receivable Recorded Investment FICO Score Six Hundred To Six Hundred Thirty Nine Financing receivables with FICO score less than 640 but more than 599. 640-679 Financing Receivable Recorded Investment FICO Score Six Hundred Forty To Six Hundred Seventy Nine Financing receivables with FICO score less than 680 but more than 639. 680-719 Financing Receivable Recorded Investment FICO Score Six Hundred Eighty To Seven Hundred Nineteen Financing receivables with FICO score less than 720 but more than 679. 720-759 Financing Receivable Recorded Investment Fico Score Seven Hundred Twenty To Seven Hundred Fifty Nine Financing receivables with FICO score less than 760 but more than 719. 760-799 Financing Receivable Recorded Investment Fico Score Seven Hundred Sixty To Seven Hundred Ninety Nine Financing receivables with FICO score less than 800 but more than 759. 800 and greater Financing Receivable, Recorded Investment, FICO Score 800 And Greater Financing receivables with FICO score 800 and greater. No FICO available Financing Receivable, Recorded Investment, FICO Score Not Available Financing Receivable, Recorded Investment, FICO Score Not Available. Total consumer PCI loans (adjusted unpaid principal balance) Financing Receivable, Acquired with Deteriorated Credit Quality, Gross The balance of financing receivables that were acquired with deteriorated credit quality, adjusted for writedowns, and before deduction of accretable yield and nonaccretable difference. Purchased Credit Impaired Loans (carrying value) Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Securities Financing Transaction [Axis] Securities Financing Transaction [Axis] Securities Financing Transaction [Domain] Securities Financing Transaction [Domain] Private Forward Repurchase Transaction [Member] Private Forward Repurchase Transaction [Member] Contractual equity transaction to provide economic benefit and to complement open-market common stock repurchase strategies Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Total Wells Fargo stockholders' equity [Member] Parent [Member] Preferred stock [Member] Preferred Stock [Member] Common stock [Member] Common Stock [Member] Additional paid-in capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Cumulative other comprehensive income [Member] Accumulated Other Comprehensive Income (Loss) [Member] Treasury stock [Member] Treasury Stock [Member] Unearned ESOP Shares [Member] Unearned Employee Stock Option Plan Shares [Member] Unearned ESOP Shares. Noncontrolling interests [Member] Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Forward Contract Indexed to Issuer's Equity, Contract Amount Forward Contract Indexed to Issuer's Equity, Contract Amount The contract amount for a forward repurchase agreement that indexed to, and potentially settled in, the issuer's equity. Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning balance, shares Shares, Issued Net income (loss) Net Income (Loss) Attributable to Parent Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Other comprehensive income (loss) attributable to parent, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive income (loss) attributable to noncontrolling interest, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Noncontrolling interests, adjustments to Additional Paid in Capital Adjustments to Additional Paid in Capital, Redemption Value of Noncontrolling Interests Change in additional paid in capital as a result of an adjustment to the redemption value of noncontrolling interest that is not currently redeemable, but which is probable that it will become redeemable. Noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Total change in noncontrolling interests Increase, Decrease in Noncontrolling Interests The net change during the reporting period in the carrying value of noncontrolling interests. Common stock issued Stock Issued During Period, Value, New Issues Common stock, shares issued Stock Issued During Period, Shares, New Issues Common stock repurchased Stock Repurchased During Period, Value Common stock repurchased, shares Stock Repurchased During Period, Shares Preferred stock issued to ESOP Stock Issued During Period, Value, Employee Stock Ownership Plan Preferred stock issued to ESOP, shares Stock Issued During Period, Shares, Employee Stock Ownership Plan Preferred stock released by ESOP Preferred Stock Released By Employee Stock Option Plan Value of preferred stock released by the employee stock ownership plan during the period. Preferred stock converted to common shares Stock Issued During Period, Value, Conversion of Convertible Securities Preferred stock converted to common shares, shares Stock Issued During Period, Shares, Conversion of Convertible Securities Common stock warrants repurchased/exercised Adjustments to Additional Paid in Capital, Warrant Issued Preferred stock issued Preferred Stock Amount Preferred stock issued, amount. Preferred stock, shares issued Preferred Stock Issued Preferred stock issued, shares Common stock dividends Dividends, Common Stock Preferred stock dividends Dividends, Preferred Stock, Cash Tax benefit from stock incentive compensation Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Stock incentive compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Net change in deferred compensation and related plans Net increase (decrease) in deferred compensation and related plans The increase (decrease) in shareholders equity from the change in the value of other deferred compensation plans and miscellaneous deferred compensation activities distributed to employees as compensation. Net change Stockholders' Equity, Period Increase (Decrease) Net change, shares Stock Issued During Period, Shares, Period Increase (Decrease) Ending Balance Ending balance, shares Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass [Member] Pass [Member] Criticized [Member] Criticized [Member] A category of financing receivables considered to be special mention, substandard, or doubtful. Total Commercial [Member] Commercial and Industrial Loans [Member] Commercial Loan [Member] Commercial Real Estate Mortgage [Member] Commercial Real Estate Other Receivable [Member] Commercial Real Estate Construction [Member] Commercial Real Estate Construction Financing Receivable [Member] Purchased Credit Impaired Loans by Credit Quality Indicator [Abstract] Financing Receivables Acquired with Deteriorated Credit Quality by Credit Quality Indicator [Abstract] Financing Receivables Acquired with Deteriorated Credit Quality by Credit Quality Indicator. Fair Value Disclosures [Abstract] Fair Value, Option, Quantitative Disclosures [Table] Fair Value, Option, Quantitative Disclosures [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Mortgage banking noninterest income [Member] Mortgage banking noninterest income [Member] Mortgage Banking Noninterest Income Member Net gains (losses) from trading activities [Member] Net gains losses from trading activities [Member] Net gains losses from trading activities recognized in the income statement for the periods presented Other noninterest income [Member] Other Noninterest Income [Member] Other Noninterest Income Member Eligible Item or Group for Fair Value Option [Axis] Eligible Item or Group for Fair Value Option [Axis] Fair Value, Option, Eligible Item or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Trading assets - loans [Member] Trading Assets, Loans [Member] Trading Assets, Loans [Member] Mortgages held for sale [Member] Mortgages held for sale [Member] Mortgages held for sale. Loans held for sale [Member] Loans held for sale [Member] Loans held for sale Member. Loans [Member] Loans Receivable [Member] Other assets [Member] Other Assets [Member] Other interests held [Member] Other interests held [Member] Other Interests Held Member Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Gains (Losses) on changes in fair value Fair Value, Option, Changes in Fair Value, Gain (Loss) Earnings Per Share [Abstract] Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Antidilutive Warrants And Options Outstanding Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Guarantees [Abstract] Assets Assets [Abstract] Resale and securities borrowing agreements Resale, Securities Borrowing and Similar Arrangements [Abstract] Gross amounts recognized Securities Purchased under Agreements to Resell and Securities Borrowed, Gross Amount, before effects of master repurchase agreements and master securities lending agreements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price, and of securities borrowed from entities in exchange for collateral. Gross amounts offset in consolidated balance sheet Securities Purchased under Agreements to Resell and Securities Borrowed, Amount Offset Against Collateral Amount of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price offset against an obligation to return collateral. Also includes amount of securities borrowed from entities in exchange for collateral offset against an obligation to return collateral under a master netting arrangement. Net amounts in consolidated balance sheet Securities Purchased under Agreements to Resell and Securities Borrowed, Net Amount in Consolidated Balance Sheet Amount, after effects of master repurchase agreements and master securities lending agreements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price, and of securities borrowed from entities in exchange for collateral. Collateral not recognized in consolidated balance sheet Securities Purchased under Agreements to Resell and Securities Borrowed, Collateral Amount of collateral received related to exposures subject to enforceable master repurchase agreements and master securities lending agreements. While these agreements are typically over-collateralized, the collateral amount is limited to the amount of the related recognized asset for each counterparty. Net amount Securities Purchased under Agreements to Resell and Securities Borrowed, Net Net amount of exposure after accounting for amounts offset in the consolidated balance sheet and securities or loans collateral that has not been offset against securities purchased under agreement to resell and securities borrowed. Liabilities Liabilities [Abstract] Repurchase and securities lending agreements Repurchase, Securities Lending and Similar Arrangements [Abstract] Gross amounts recognized (5) Securities Sold under Agreements to Repurchase and Securities Loaned, Gross Amount, before effects of master repurchase agreements and master securities lending agreements, of funds outstanding borrowed in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price, and of securities loaned to entities in exchange for collateral. Gross amounts offset in consolidated balance sheet Securities Sold under Agreements to Repurchase and Securities Loaned, Amount Offset Against Collateral Amount of funds outstanding borrowed in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price offset against a right to receive collateral. Also includes amount of securities loaned to entities in exchange for collateral offset against a right to receive collateral under a master netting arrangement. Net amounts in consolidated balance sheet Securities Sold under Agreements to Repurchase and Securities Loaned, Net Amount in Consolidated Balance Sheet Amount, after effects of master repurchase agreements and master securities lending agreements, of funds outstanding borrowed in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price, and of securities loaned to entities in exchange for collateral. Collateral pledged but not netted in consolidated balance sheet Securities Sold under Agreements to Repurchase and Securities Loaned, Collateral Amount of collateral pledged related to exposures subject to enforceable master repurchase agreements and master securities lending agreements. While these agreements are typically over-collateralized, the collateral amount is limited to the amount of the related recognized liability for each counterparty. Net amount Securities Sold under Agreements to Repurchase and Securities Loaned, Net Net amount of exposure after accounting for amounts offset in the consolidated balance sheet and securities or loans collateral that has not been offset against securities sold under agreement to repurchase and securities loaned. Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Axis] Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Axis] Loans Excluding Certain Loans Acquired in a Transfer With Evidence of Credit Deterioration. Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Domain] Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Domain] Loans Excluding Certain Loans Acquired in a Transfer with Evidence of Credit Deterioration. Loans Excluding Purchased Credit-Impaired Loans [Member] Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] Loans Excluding Certain Loans Acquired in a Transfer With Evidence of Credit Deterioration. By LTV/CLTV: Financing Receivables by Loan to Value Excluding Acquired with Deteriorated Credit Quality [Abstract] Financing Receivables by Loan to Value, Excluding Acquired with Deteriorated Credit Quality. 0-60% Financing Receivable, Recorded Investment, Loan To Value Ratio Zero to Sixty Percent Financing receivable with loan to value ratio zero to 60 percent. 60.01-80% Financing Receivable Recorded Investment Loan To Value Ratio Sixty Point Zero One To Eighty Percent Financing receivable with loan to value ratio sixty point zero one to eighty percent. 80.01-100% Financing Receivable Recorded Investment Loan To Value Ratio Eighty Point Zero One To Hundred Percent Financing receivable with loan to value ratio eighty point zero one to one hundred Percent. 100.01-120% Financing Receivable Recorded Investment Loan To Value Ratio One Hundred Point Zero One To One Hundred Twenty Percent Financing receivable with loan to value ratio one hundred point zero one to one hundred twenty percent. Greater than 120% Financing Receivable, Recorded Investment, Loan To Value Ratio Greater Than 120 Percent Financing receivable with loan to value ratio greater than one hundred twenty percent. No LTV/CLTV available Financing Receivable, Recorded Investment, Loan To Value And Combined Loan To Value Ratio Not Available Financing receivables with no loan to value ratio or combined loan to value ratio available. Government insured/guaranteed loans Financing Receivable Government Insured Or Guaranteed Financing receivable government insured or guaranteed. Loans, excluding Purchased Credit Impaired Loans Loans and Leases Receivable, Other, Net of Deferred Income Loans Nonaccrual loans Financing Receivable, Recorded Investment, Nonaccrual Status Securitizations and Variable Interest Entities [Abstract] Securitizations And Variable Interest Entities. Securitized Loans, By Type [Table] Securitized Loans, By Type [Table] Securitized Loans By Type [Axis] Securitized Loans By Type [Axis] Securitized Loans, By Type [Domain] Securitized Loans, By Type [Domain] Real estate mortgage [Member] Total Consumer [Member] Other revolving credit and installment [Member] Consumer Loan [Member] Securitized Loans By Type [Line Items] Securitized Loans By Type [Line Items] Principal Balances - Off-Balance Sheet Securitized Loans [Abstract] Loans Managed, Securitized or Asset-backed Financing Arrangement [Abstract] Total loans Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding Delinquent loans and foreclosed assets Delinquent Amount at End of Period on Loans Managed and Securitized or Asset-backed Financing Arrangement Net charge-offs Net Credit Loss on Loans Managed or Securitized or Asset-backed Financing Arrangement Mortgage Banking Activities [Abstract] Mortgage Banking Activities. Liability For Mortgage Loan Repurchase Losses [Abstract] Liability For Mortgage Loan Repurchase Losses [Roll Forward] Liability For Mortgage Loan Repurchase Losses. Balance, beginning of period Liability for mortgage loan repurchase losses Liability for mortgage loan repurchase losses. Provision for repurchase losses: Provision For Repurchase Losses (Abstract) Loan sales Liability For Mortgage Loan Repurchase Losses Additions Sales Increases to the liability for mortgage loan repurchase losses due to sales of loans. Change in estimate Liability For Mortgage Loan Repurchase Losses Additions Change In Estimate Primarily Due To Credit Deterioration Increases to the liability for mortgage loan repurchase losses due to credit deterioration. Net additions (reductions) Liability For Mortgage Loan Repurchase Losses Additions Total increase (decrease) to the liability for mortgage loan repurchase losses. Losses Liability For Mortgage Loan Repurchase Losses Reductions Losses Decreases to the liability for mortgage loan repurchase losses due to losses incurred. Balance, end of period Other Assets [Abstract] Components of Other Assets Schedule of Other Assets [Table Text Block] Income Related To Nonmarketable Equity Investments [Table Text Block] Income Related To Nonmarketable Equity Investments [Table Text Block] Income Related to nonmarketable equity investments. Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] VIEs that we do not consolidate [Member] Variable Interest Entity, Not Primary Beneficiary [Member] VIEs that we consolidate [Member] Variable Interest Entity, Primary Beneficiary [Member] Transfers that we account for as secured borrowings [Member] Transfers Accounted For As Secured Borrowings [Member] Transfers Accounted For As Secured Borrowings [Member] Total VIE [Member] Variable Interest Entities And Transfers Accounted For As Secured Borrowings [Member] Variable Interest Entities and Transfers Accounted for as Secured Borrowings. Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] Cash Cash and Due from Banks Trading assets Trading Assets Total debt and equity financial instruments classified as (1) trading securities and (2) derivative assets. (1) The total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition; this is the reason why the trading category of investments in debt and equity securities are bought and sold "principally" for sale in the near term. Transfers into and out of the trading category should be rare. Such financial instruments that are held as of the reporting date are measured at fair value with unrealized holding gains and losses (the difference between fair value and the previously reported carrying amount) included in earnings. (2) Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. Investment securities Available-for-sale Securities and Held-to-maturity Securities Mortgage servicing rights Servicing Asset at Fair Value, Amount Other assets Other Assets Total assets Assets Short-term borrowings Short-term Debt Accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Long-term debt Long-term Debt Total liabilities Liabilities Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Net assets Net Assets Pick-a-pay [Member] Acquired Consumer Mortgage Loan Portfolio [Member] Acquired consumer mortgage loan portfolio. Other Consumer [Member] Other Consumer [Member] Other Consumer. Changes in allowance for PCI loan losses [Abstract] Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Changes In Allowance For Loan Losses [Roll Forward] Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Changes In Allowance For Loan Losses Abstract. Balance, beginning of period Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses Provision for loan losses Loans Acquired In Transfer Not Accounted For As Debt Securities Provision For Loan Losses Expense recorded to recognize an impairment of loans after acquisition. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Charge-offs Certain Loan Acquired In Transfer Not Accounted For As Debt Securities Allowance For Loan Losses Decreases Reflects the amount of financing receivables that were acquired with deteriorated credit quality that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities. Balance, end of period Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Pension Plan [Member] Pension Plan [Member] Pension benefits qualified [Member] Pension Benefits Qualified [Member] Pension Benefits Qualified Member. Pension benefits nonqualified [Member] Pension Benefits Nonqualified [Member] Pension Benefits Nonqualified Member. Other benefits [Member] Other Postretirement Benefit Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Components of net periodic benefit cost [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Amortization of net actuarial loss (gain) Defined Benefit Plan, Amortization of Gains (Losses) Amortization of prior service credit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Settlement loss Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements Net periodic benefit cost (income) Defined Benefit Plan, Net Periodic Benefit Cost By LTV/CLTV: Financing Receivables Acquired with Deteriorated Credit Quality by Loan to Value [Abstract] Financing Receivables Acquired with Deteriorated Credit Quality by Loan to Value. No LTV/CLTV available Statement of Financial Position [Abstract] Vies That We Consolidate No Recourse [Member] Vies That We Consolidate No Recourse [Member] VIEs that we consolidate, no recourse. Cash and due from banks Trading Assets Held-to-maturity, at fair value Held-to-maturity Securities, Fair Value Mortgages held for sale, carried at fair value Mortgages Held-for-sale, Fair Value Disclosure Loans held for sale Loans Held-for-sale, Fair Value Disclosure Mortgages held for sale (includes $21,539 and $15,565 carried at fair value) (1) Loans Receivable, Fair Value Disclosure Net loans Loans and Leases Receivable, Net Amount Other assets, carried at fair value Other Assets, Fair Value Disclosure Wells Fargo stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares issued Common Stock, Shares, Issued Common stock, shares authorized Common Stock, Shares Authorized Treasury stock, shares Treasury Stock, Shares Trading assets, loans Trading Loans, Fair Value Disclosure Fair value of trading loans accounted for under the fair value option Trading assets, loans, unpaid principal Fair Value Option, Unpaid Principal, Trading Loans Fair Value Option, Unpaid Principal, Trading Loans Trading assets, loans, aggregate difference Fair Value Option, Aggregate Difference, Trading Loans Fair Value Option, Aggregate Difference, Trading Loans Mortgages held for sale Mortgages held for sale, unpaid principal Mortgages held for sale, Unpaid principal For mortgages held for sale for which the fair value option has been elected, this item represents the aggregate unpaid principal balance. Loans held for sale, unpaid principal Loans held for sale, Unpaid Principal For loans held for sale for which the fair value option has been elected, this item represents the aggregate unpaid principal balance. Loans Loans, Unpaid principal Loans Receivable Unpaid Principal For loan receivables for which the fair value option has been elected, this item represents the aggregate unpaid principal balance. Loans, Loans held for sale and Mortgages held for sale, aggregate difference Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables Nonaccrual loans Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status Nonaccrual loans, unpaid principal Fair Value Option Loans Held As Assets Amount In Nonaccrual Status Aggregate Unpaid Principal For loans held as assets for which the fair value option has been elected, this item represents the aggregate unpaid principal balance of those loans that are in nonaccrual status. Nonaccrual loans, Aggregate difference Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status, Aggregated Difference Loans 90 days or more past due and still accruing Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due Loans 90 days or more past due and still accruing, Unpaid principal Fair Value Option Loans Held as Assets 90 Days or More Past Due Aggregate Unpaid Principal For loans held as assets for which the fair value option has been elected, this item represents the aggregate unpaid principal balance of those loans that are 90 days or more past due. Loans 90 days or more past due and still accruing, Aggregate difference Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due, Aggregate Difference Cumulative Other Comprehensive Income Balances [Abstract] [Abstract] The entire disclosure of Other Comprehensive Income. Components of other comprehensive income, reclassifications to net income by income statement line item, and the related tax effects Comprehensive Income (Loss) [Table Text Block] Cumulative other comprehensive income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Loans and Allowance for Credit Losses, Loans Outstanding Schedule Of Financing Receivables [Table Text Block] Schedule of financing receivables. Loans and Allowance for Credit Losses, Significant Activity Financing Receivables Significant Activity [Table Text Block] Financing receivables significant activity. Loans and Allowance for Credit Losses, Commitments to Lend Financing Receivables Comments To Lend [Table Text Block] Schedule of financing receivables commitments to lend. Loans and Allowance for Credit Losses, Allowance for Credit Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Loans and Allowance for Credit Losses, Allowance for Credit Losses by Category Schedule Of Financing Receivables Allowance For Credit Losses By Loan Category [Table Text Block] Schedule of financing receivables allowance for credit losses by loan category. Loans and Allowance for Credit Losses, by Impairment Methodology Schedule Of Financing Receivables By Impairment Methodology [Table Text Block] Schedule of financing receivables by impairment methodology. Loans by Credit Quality Indicator Financing Receivable Credit Quality Indicators [Table Text Block] Loans by Delinquency Status, Commercial Financing Receivables By Delinquency Status Commercial [Table Text Block] Schedule of commercial financing receivables by delinquency status. Loans by Delinquency Status, Consumer Financing Receivables By Delinquency Status Consumer [Table Text Block] Schedule of consumer financing receivables by delinquency status. Loans by FICO Score, Consumer Financing Receivables By FICO Score Consumer [Table Text Block] Schedule of consumer financing receivables by FICO score. Loans by Loan to Value Ratio, Consumer Financing Receivables By Loan To Value Ratio Consumer [Table Text Block] Schedule of consumer financing receivables by Loan to Value ratio. Nonaccrual Loans Financing Receivables Nonaccrual Status [Table Text Block] Schedule of financing receivables in nonaccrual status. 90 days or More Past Due and Still Accruing Loans Past Due Financing Receivables 90 Days Past Due And Still Accruing [Table Text Block] Past due financing receivables 90 days past due and still accruing. Impaired Loans Impaired Financing Receivables [Table Text Block] Impaired Loans, Average Recorded Investment and Interest Income Impaired Financing Receivables Average Recorded Investment And Interest Income [Table Text Block] Schedule of impaired financing receivables average recorded investment and interest income. Troubled Debt Restructurings, Modification by Type Troubled Debt Restructurings on Financing Receivables [Table Text Block] Troubled Debt Restructuring, Current Defaults Troubled Debt Restructurings, Current Defaults [Table Text Block] Schedule of troubled debt restructurings, current defaults Purchased Credit Impaired Loans, Loans Outstanding Financing Receivables Acquired With Deteriorated Credit Quality Loans Outstanding [Table Text Block] Schedule of financing receivables acquired with deteriorated credit quality, loans outstanding. Purchased Credit Impaired Loans, Accretable Yield Financing Receivables Acquired With Deteriorated Credit Quality Accretable Yield [Table Text Block] Financing receivables acquired with deteriorated credit quality accretable yield. Purchased Credit Impaired Loans, Allowance for Credit Losses Financing Receivables Acquired With Deteriorated Credit Quality Allowance For Credit Losses [Table Text Block] Financing receivables acquired with deteriorated credit quality allowance for credit losses. Purchased Credit Impaired Loans by Credit Quality Indicator Financing Receivables Acquired With Deteriorated Credit Quality By Credit Quality Indicator [Table Text Block] Financing receivables acquired with deteriorated credit quality by credit quality indicator. Purchased Credit Impaired Loans by Delinquency Status, Commercial Financing Receivables Acquired With Deteriorated Credit Quality By Delinquency Status Commercial [Table Text Block] Schedule of commercial financing receivables acquired with deteriorated credit quality by delinquency status. Purchased Credit Impaired Loans by Delinquency Status, Consumer Financing Receivables Acquired With Deteriorated Credit Quality By Delinquency Status Consumer [Table Text Block] Schedule of consumer financing receivables acquired with deteriorated credit quality by delinquency status. Purchased Credit Impaired Loans by FICO Score, Consumer Financing Receivables Acquired With Deteriorated Credit Quality By FICO Score Consumer [Table Text Block] Schedule of consumer financing receivables acquired with deteriorated credit quality by FICO score. Purchased Credit Impaired Loans by Loan to Value Ratio, Consumer Financing Receivables Acquired With Deteriorated Credit Quality By Loan To Value Ratio Consumer [Table Text Block] Schedule of consumer financing receivables acquired with deteriorated credit quality by loan to value ratio. Preferred Stock [Abstract] Detail of Preferred Stock Detail Of Preferred Stock [Table Text Block] Detail of Preferred Stock. Detail of Employee Stock Ownership Plan Preferred Stock Detail Of Employee Stock Ownership Plan Preferred Stock [Table Text Block] Detail of Employee Stock Ownership Plan Preferred Stock. Lease Financing [Member] Finance Leases Financing Receivable [Member] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Loans and Leases Receivable Disclosure [Abstract] Loans and Leases Receivable Disclosure [Abstract] Loans, excluding Purchased Credit Impaired Loans Schedule of Earnings per Common Share, Basic and Diluted [Table] Schedule of Earnings per Common Share, Basic and Diluted [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Stock Option [Member] Equity Option [Member] Restricted Share Rights [Member] Rights [Member] Warrants [Member] Warrant [Member] Earnings per Common Share, Basic and Diluted [Line items] Earnings per Common Share, Basic and Diluted [Line Items] Earnings per Common Share, Basic and Diluted [Line Items] Earnings Per Common Share [Abstract] Earnings Per Share Reconciliation [Abstract] Wells Fargo net income Less: Preferred stock dividends and other Preferred Stock Dividends and Other Adjustments Wells Fargo net income applicable to common stock Net Income (Loss) Available to Common Stockholders, Basic Earnings per common share Earnings Per Share, Basic [Abstract] Average common shares outstanding (denominator) Weighted Average Number of Shares Outstanding, Basic Per share Earnings Per Share, Basic Diluted earnings per common share Earnings Per Share, Diluted [Abstract] Average common shares outstanding (in shares) Weighted average number of diluted shares outstanding, adjustment (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted average common shares outstanding (denominator) Weighted Average Number of Shares Outstanding, Diluted Per share Earnings Per Share, Diluted Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Inputs, Comparability Adjustments Fair Value Inputs, Comparability Adjustments Earnings Per Common Share Earnings Per Share [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets Intangible Assets Disclosure [Text Block] Cumulative OCI balances [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Investment securities: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Cumulative other comprehensive income, Investment securities, beginning of period Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Amounts reclassified from accumulated other comprehensive income Other Comprehensive Income Loss Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income Net Of Tax Net of tax amount of the income statement impact of the reclassification adjustment gain (loss) for unrealized gain (loss) realized upon the sale or write-down of available-for-sale securities. Net change, Net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Less: Other comprehensive income from noncontrolling interests Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Cumulative other comprehensive income, Investment securities, end of period Derivatives and hedging activities: Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] Cumulative other comprehensive income, Derivatives and hedging activities, beginning of period Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Amounts reclassified from accumulated other comprehensive income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Net change, Net of tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Less: Other comprehensive income from noncontrolling interests Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Noncontrolling Interest Cumulative other comprehensive income, Derivatives and hedging activities, end of period Defined benefit plans adjustments: Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax [Abstract] Cumulative other comprehensive loss, Defined benefit plans adjustment, beginning of period Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax Amounts reclassified from accumulated other comprehensive income Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax Net change, Net of tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax Less: Other comprehensive income from noncontrolling interests Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Cumulative other comprehensive loss, Defined benefit plans adjustment, end of period Foreign currency translation adjustments: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract] Cumulative other comprehensive income (loss), Foreign currency translation adjustments, beginning of period Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Amounts reclassified from accumulated other comprehensive income Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, Net of Tax Net change, Net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Less: Other comprehensive income from noncontrolling interests Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Cumulative other comprehensive income (loss), Foreign currency translation adjustments, end of period Cumulative other comprehensive income, beginning of period Accumulated Other Comprehensive Income (Loss), Net of Tax Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss), Unrealized Gain (Loss) Arising During the Period, Net of Tax Amount after tax, before reclassification adjustments, of cumulative unrealized gains (losses) arising during the period. Includes unrealized gains (losses) arising from deferred gains or losses on qualifying hedges, unrealized holding gains or losses on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. Amounts reclassified from accumulated other comprehensive income Other Comprehensive Income (Loss), Reclassification Adjustment, Net of Tax Amount after tax of reclassification adjustment from accumulated other comprehensive (income) loss into net income during the periods presented. Other comprehensive income (loss), net of tax Less: Other comprehensive income (loss) from noncontrolling interests, net of tax Cumulative other comprehensive income, end of period Investments, Debt and Equity Securities [Abstract] Schedule of Marketable Securities [Table] Schedule of Marketable Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Investment securities [Member] Securities (Assets) [Member] Total debt securities [Member] Debt Securities [Member] Securities of U.S. Treasury and federal agencies [Member] US Treasury and Government [Member] Securities of U.S. states and political subdivisions [Member] US States and Political Subdivisions Debt Securities [Member] Mortgage-backed securities: [Member] Collateralized Mortgage Backed Securities [Member] Federal agencies [Member] Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Residential [Member] Residential Mortgage Backed Securities [Member] Commercial [Member] Commercial Mortgage Backed Securities [Member] Corporate debt securities [Member] Corporate Debt Securities [Member] Collateralized loan and other debt obligations [Member] Collateralized Loan Obligations [Member] Other [Member] Other Debt Obligations [Member] Total marketable equity securities [Member] Equity Securities [Member] Perpetual preferred securities [Member] Perpetual Preferred Securities [Member] Perpetual preferred securities member. Other marketable equity securities [Member] Equity Securities, Other 1 [Member] This category includes information about ownership interests or the right to acquire ownership interests in corporations and other legal entities which ownership interest is represented by shares of common or preferred stock (which is neither mandatorily redeemable no redeemable at the option of the holder), convertible securities, stock rights, or stock warrants categorized by other type. Schedule of Marketable Securities [Line Items] Schedule of Marketable Securities [Line Items] Available-for-sale securities: Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] Less than 12 months, Gross unrealized losses, available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less than 12 months, Fair value, available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 12 months or more, Gross unrealized losses, available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 12 months or more, Fair value, available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total, Gross unrealized losses, available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Total, Fair value, available-for-sale Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Held-to-maturity securities: Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract] Less than 12 months, Gross unrealized losses, held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less than 12 months, Fair value, held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 12 months or more, Gross unrealized losses, held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 12 months or more, Fair value, held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total, Gross unrealized losses, held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss Total, Fair value, held-to-maturity Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value Total investment securities: Marketable Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] Less than 12 months, Gross unrealized losses, investment securities Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss 2 Amount at at point in time of unrealized loss before deducting unrealized gain on investments in marketable securities that have been in a loss position for less than twelve months. Less than 12 months, Fair value, investment securities Marketable Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value This item represents the fair value of marketable securities that have been in a continuous unrealized loss position for less than twelve months. 12 months or more, Gross unrealized losses, investment securities Marketable Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss 2 Amount at a point in time of unrealized loss on investments in marketable securities that have been in a loss position for twelve months or longer. 12 months or more, Fair value, investment securities Marketable Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value This item represents the fair value of marketable securities that have been in a continuous unrealized loss position for twelve months or longer. Total, Gross unrealized losses, investment securities Marketable Securities, Continuous Unrealized Loss Position, Aggregate Loss 2 Amount at a point in time of unrealized loss on investments in marketable securities. Total, Fair value, investment securities Marketable Securities, Continuous Unrealized Loss Position, Fair Value This item represents the fair value of marketable securities which are in an unrealized loss position. Income Statement [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Noninterest income Noninterest Income [Abstract] Total OTTI losses (reversal of losses) recorded on debt securities Other Than Temporary Impairment Losses (Reversal Of Losses), Investments, Marketable Securities Includes both the amount by which the fair value of an investment in debt and equity securities is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income and recoveries of previously recognized non-credit-related OTTI which is recognized in other comprehensive income. Total recorded as part of gross realized losses Other Than Temporary Impairment Losses, Available-for-Sale And Held-to-Maturity Securities, Portion Recognized In Earnings, Net The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Total reversal of losses recognized in OCI as non-credit-related impairment Other than Temporary Impairment Losses (Reversal Of Losses), Investments, Portion In Other Comprehensive Income (Loss), Before Tax, Including Portion Attributable To Noncontrolling Interest, Marketable Securities Before tax amount of other than temporary impairment (OTTI) loss (reversal of loss) on a debt security, recognized in other comprehensive income (loss). A (reversal of loss) in OTTI represents partial to full reversal of impairment due to recoveries in the fair value of securities due to factors other than credit. Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Equity Securities and Nonmarketable Equity Securities Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Equity Securities and Nonmarketable Equity Securities The amount of other than temporary impairment losses on investments in equity securities categorized as Available-for-sale and nonmarketable equity securities which have been recognized in earnings during the period. Fair Value, Measurements from Brokers or Third Party Pricing Services Fair Value Measurements From Third Party Pricing Services [Table Text Block] Fair Value Measurements from Third Party Pricing Services. Assets and Liabilities Recorded at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value, Transfers Between Fair Value Levels Fair Value, Assets and Liabilities Measured on Recurring Basis, Transfers Between Fair Value Levels [Table Text Block] Schedule of transfers into and out of Level 1, Level 2, and Level 3.The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred. Fair Value, Assets and Liabilities Measured on Recurring Basis, Level 3 Reconciliation Changes In Fair Value Of Level 3 Assets And Liabilities Recurring Basis [Table Text Block] Tabular disclosure of the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings are reported in the statement of income; (2) purchases, sales, issues, and settlements; and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset and liability. Fair Value, Assets and Liabilities Measured on Recurring Basis, Level 3 Reconciliation Detail Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation Detail [Table Text Block] Tabular disclosure of purchases, sales, issuances and settlements that are reported as a net amount in the Level 3 unobservable input reconciliation table. Fair Value, Assets and Liabilities Measured on Recurring Basis, Quantative Information about Valuation Techniques and Unobservable Inputs Fair Value Inputs, Assets and Liabilities Measured on Recurring Basis, Quantitative Information [Table Text Block] Tabular disclosure of quantitative information about the unobservable inputs used in the fair value measurement of assets and liabilities measured on a recurring basis. This disclosure includes the fair value of the asset or liability, valuation technique used to measure fair value, the unobservable inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. Fair Value, Assets Recorded at Fair Value on a Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Changes in Fair Value of Assets Recorded at Fair Value on Nonrecurring Basis Fair Value Adjustment Of Certain Assets On Nonrecurring Basis [Table Text Block] Tabular disclosure of the increase (decrease) in value of certain assets that are measured at fair value on a nonrecurring basis for which a fair value adjustment has been included in the income statement. Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Quantative Information about Valuation Techniques and Unobservable Inputs Fair Value Inputs, Assets and Liabilities Measured on Nonrecurring Basis, Quantitative Information [Table Text Block] Tabular disclosure of quantitative information about the unobservable inputs used in the fair value measurement of assets and liabilities measured on a nonrecurring basis. This disclosure includes the fair value of the asset or liability, valuation technique used to measure fair value, the unobservable inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. Fair Value Investments in Entities that Calculate Net Asset Value Per Share Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table Text Block] Fair Value Option, Carrying Amount Fair Value, Option, Quantitative Disclosures [Table Text Block] Fair Value Option, Gains and Losses Changes In Fair Values Related To Initial Measurement [Table Text Block] Changes In Fair Values Related To Initial Measurement. Fair Value Option, Instrument Specific Credit Risk Instrument Specific Credit Risk Fair Value Option [Table Text Block] Instrument specific credit risk fair value option. Fair Value, Estimated for Financial Instruments Not Carried at Fair Value Fair Value Of Financial Instruments [Table Text Block] Fair value of financial instruments. By delinquency status: Purchased Credit Impaired Loans Commercial Days Past Due [Abstract] Purchased Credit Impaired Loans Commercial Days Past Due. Current-29 DPD and still accruing Financing Receivable, Recorded Investment, Current 30-89 DPD and still accruing Financing Receivable, Recorded Investment, 30 to 89 Days Past Due And Still Accruing Financing receivables that are less than 90 days past due but more than 29 days past due and still accruing. 90+ DPD and still accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Purchased Credit Impaired Loans Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Instruments Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Servicing Asset at Amortized Cost [Table] Servicing Asset at Amortized Cost [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Commercial Mortgage Servicing [Member] Commercial Mortgage Servicing [Member] Commercial Mortgage Servicing. Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Liability For Mortgage Loans Repurchase Losses [Member] Liability For Mortgage Loans Repurchase Losses [Member] Liability for mortgage loans repurchase losses. Amortized [Axis] Amortized [Axis] Amortized. Amortized [Domain] Amortized [Domain] Amortized. Amortized [Member] Amortized [Member] Amortized. Servicing Asset at Amortized Cost [Line Items] Servicing Asset at Amortized Cost [Line Items] Mortgage Banking Activities (Textual) [Abstract] Mortgage Banking Activities Textual [Abstract] Mortgage Banking Activities Textual Abstract. Valuation allowance Valuation Allowance for Impairment of Recognized Servicing Assets, Balance Range of possible loss, portion not accrued Loss Contingency, Range of Possible Loss, Portion Not Accrued Credit Card [Member] Credit Card Receivable [Member] Automobile [Member] Consumer Loans Auto Financing Receivable [Member] By delinquency status: Financing Receivable, Recorded Investment, Aging [Abstract] Current-29 DPD 30-59 DPD Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 60-89 DPD Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 90-119 DPD Financing Receivable, Recorded Investment, 90 to 119 Days Past Due and Still Accruing Financing receivables that are less than 120 days past due but more than 89 days past due and still accruing. 120-179 DPD Financing Receivable, Recorded Investment, 120 to 179 Days Past Due and Still Accruing Financing receivables that are less than 180 days past due but more than 119 days past due and still accruing. 180 or more DPD Financing Receivable, Recorded Investment, Equal to Greater Than 180 Days Past Due and Still Accruing Financing receivables that are equal to or greater than 180 days past due and still accruing. Document and Entity Information [Abstract] Document And Entity Information. Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus 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 Financing Receivable, Allowance for Credit Losses [Roll Forward] Financing Receivable, Allowance for Credit Losses [Roll Forward] Allowance for credit losses, beginning balance Provision for credit losses Provision for Loan, Lease, and Other Losses Interest income on certain impaired loans Financing Receivable Allowance For Credit Losses Decrease For Passage Of Time On Certain Impaired Loans Certain impaired loans have a valuation allowance determined by discounting expected cash flows as the respective loan's effective interest rate. Accordingly, the valuation for these impaired loans reduces with the passage of time and that reduction is recognized as interest income. Loan charge-offs Allowance for Loan and Lease Losses, Write-offs Loan recoveries Valuation Allowances and Reserves, Recoveries Net loan charge-offs Financing Receivable Allowance For Credit Losses Net Write Offs Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities, net of collections. Allowance related to business combinations/other Financing Receivable Allowance For Credit Losses Other Increase Decrease Other increase (decrease) to the allowance for credit losses, including allowances related to business combinations and other. Allowance for credit losses, ending balance Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Preferred Stock [Member] Employee Stock Ownership Plan Preferred Stock 2015 [Member] Employee Stock Ownership Plan Preferred Stock 2015 [Member] Employee Stock Ownership Plan Preferred Stock 2015 [Member] Employee Stock Ownership Plan Preferred Stock 2014 [Member] Employee Stock Ownership Plan Preferred Stock 2014 [Member] Employee Stock Ownership Plan Preferred Stock 2014 [Member] Employee Stock Ownership Plan Preferred Stock 2013 [Member] Employee Stock Ownership Plan Preferred Stock 2013 [Member] Employee Stock Ownership Plan Preferred Stock for 2013. Employee Stock Ownership Plan Preferred Stock 2012 [Member] Employee Stock Ownership Plan Preferred Stock 2012 [Member] Employee Stock Ownership Plan Preferred Stock for 2012. Employee Stock Ownership Plan Preferred Stock 2011 [Member] Employee Stock Ownership Plan Preferred Stock 2011 [Member] Employee Stock Ownership Plan Preferred Stock for 2011. Employee Stock Ownership Plan Preferred Stock 2010 [Member] Employee Stock Ownership Plan Preferred Stock 2010 [Member] Employee Stock Ownership Plan Preferred Stock for 2010. Employee Stock Ownership Plan Preferred Stock 2008 [Member] Employee Stock Ownership Plan Preferred Stock 2008 [Member] Employee Stock Ownership Plan Preferred Stock for 2008 Member. Employee Stock Ownership Plan Preferred Stock 2007 [Member] Employee Stock Ownership Plan Preferred Stock 2007 [Member] Employee Stock Ownership Plan Preferred Stock for 2007 Member. Employee Stock Ownership Plan Preferred Stock 2006 [Member] Employee Stock Ownership Plan Preferred Stock 2006 [Member] Employee Stock Ownership Plan Preferred Stock for 2006 Member. Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Class of Stock [Line Items] Class of Stock [Line Items] Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] Detail of Employee Stock Ownership Plan Preferred Stock Abstract. Shares issued and outstanding Employee Stock Ownership Plan (ESOP), Shares in ESOP Carrying value Employee Stock Ownership Plan Preferred Stock Carrying value Employee stock ownership plan, preferred stock, carrying value. Adjustable dividend rate Adjustable Dividend Rate Adjustable Dividend Rate of ESOP Preferred Stock Unearned ESOP shares Unearned ESOP Shares Cost Cost of unearned shares that qualify as permanent equity that are held by an employee stock ownership plan (ESOP). Fair Value Assets And Liabilities Measured On Recurring Basis By Asset Type [Axis] Fair Value Assets And Liabilities Measured On Recurring Basis By Asset Type [Axis] Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation Asset Types [Domain] Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation Asset Types [Domain] Collateralized debt obligations [Member] Collateralized Debt Obligations [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Debt Securities [Member] Securities of U.S. Treasury and federal agencies [Member] Securities of U.S. states and political subdivisions [Member] Corporate debt securities [Member] Mortgage-Backed Securities [Member] Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Asset-backed securities [Member] Asset-backed Securities [Member] Auto loans and leases [Member] Collateralized Auto Loans [Member] Home equity loans [Member] Home Equity Line of Credit [Member] Other asset-backed securities [Member] Collateralized Securities, Other [Member] Other trading assets [Member] Trading Account Assets Other [Member] Trading Account Assets Other Member Other debt securities Other short sale liabilities [Member] Other Securities Sold, Not Yet Purchased [Member] Other Securities Sold, Not Yet Purchased Equity Securities [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate contract [Member] Interest Rate Contract [Member] Commodity contract [Member] Commodity Contract [Member] Equity contract [Member] Equity Contract [Member] Foreign exchange contract [Member] Foreign Exchange Contract [Member] Credit contract [Member] Credit Risk Contract [Member] Other contract [Member] Other Contract [Member] Assets: Assets, Fair Value Disclosure [Abstract] Trading assets (excluding derivatives) Trading Securities Other trading assets Trading Assets, Other Trading Assets, Other Total trading assets (excluding derivatives) Trading Securities And Trading Assets, Excluding Derivatives Trading Securities And Trading Assets, Excluding Derivatives Available-for-sale, at fair value Available-for-sale Securities Derivatives (trading and other assets) Derivative Asset, Fair Value, Gross Asset Fair value asset derivatives, netting Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset Fair value asset derivatives, net Derivative Asset Total assets recorded at fair value Assets, Fair Value Disclosure Liabilities: Liabilities, Fair Value Disclosure [Abstract] Total derivative liabilities Derivative Liability, Fair Value, Gross Liability Fair value liability derivatives, netting Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset Fair value liability derivatives, net Derivative Liability Total short sale liabilities Financial Instruments Sold, Not yet Purchased, at Fair Value Other liabilities Other Liabilities, Fair Value Disclosure Total liabilities recorded at fair value Financial and Nonfinancial Liabilities, Fair Value Disclosure 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, interest-bearing deposits in other financial institutions for relatively short periods of time and other short-term investments. Investment securities: Available-for-sale Securities and Held-to-maturity Securities [Abstract] Held-to-maturity, at cost (fair value $80,315 and $56,359) Held-to-maturity Securities Mortgages held for sale (includes $19,015 and $15,565 carried at fair value) Disposal Group, Including Discontinued Operation, Mortgage Loans Loans held for sale (includes $1 and $1 carried at fair value) Disposal Group, Including Discontinued Operation, Other Loans Loans (includes $5,730 and $5,788 carried at fair value) Allowance for loan losses Loans and Leases Receivable, Allowance Net loans Mortgage servicing rights: Mortgage Servicing Rights [Abstract] Mortgage Servicing Rights. Measured at fair value Amortized Servicing Asset at Amortized Cost Premises and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Other assets (includes $2,549 and $2,512 carried at fair value) Noninterest-bearing deposits Noninterest-bearing Deposit Liabilities Interest-bearing deposits Interest-bearing Deposit Liabilities Total deposits Deposits Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock Preferred Stock, Value, Issued Common stock – $1-2/3 par value, authorized 9,000,000,000 shares; issued 5,481,811,474 and 5,481,811,474 shares Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Cumulative other comprehensive income Treasury stock – 336,576,217 shares and 311,462,276 shares Treasury Stock, Value Total Wells Fargo stockholders' equity Stockholders' Equity Attributable to Parent Noncontrolling interests Total equity Total liabilities and equity Liabilities and Equity Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Statement, Business Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Community Banking [Member] Community Banking [Member] Community Banking Member. Wholesale Banking [Member] Wholesale Banking [Member] Wholesale Banking Member. Wealth, Brokerage And Retirement [Member] Wealth Brokerage And Retirement [Member] Wealth Brokerage And Retirement Member. Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Other [Member] Intersegment Eliminations [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of reportable operating segments Number of Operating Segments Financial Information of Operating Segment [Abstract] Segment Reporting, Measurement Disclosures [Abstract] Net interest income Interest Income (Expense), Net Provision (reversal of provision) for credit losses Noninterest income Noninterest Income Noninterest expense Noninterest Expense Income before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income before noncontrolling interests Less: Net income from noncontrolling interests Wells Fargo net income Average loans Segment Reporting Information Average Balance Of Loans Held In Portfolio Segment Reporting Information Average Balance Of Loans Held In Portfolio. Average assets Segment Reporting Information Average Asset Segment reporting information average assets Average core deposits Segment Reporting Information Average Core Deposits Segment Reporting Information Average Core Deposits. Significant Accounting Policies [Table] Significant Accounting Policies [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-11 [Member] Accounting Standards Update 2014-11 [Member] Accounting Standards Update 2014-11 [Member] Accounting Standards Update 2014-08 [Member] Accounting Standards Update 2014-08 [Member] Accounting Standards Update 2014-08 [Member] Accounting Standards Update 2014-01 [Member] Accounting Standards Update 2014-01 [Member] Accounting Standards Update 2014-01 [Member] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Nature of Operations Nature Of Operations, Policy [Policy Text Block] The policy disclosure for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. Use of Estimates Use of Estimates, Policy [Policy Text Block] Comparability of Prior Year Financial Data Comparability of Prior Year Financial Data, Policy [Policy Text Block] Accounting Standards Adopted in 2015 New Accounting Pronouncements, Policy [Policy Text Block] Private Share Repurchases Private Share Repurchases, Policy [Policy Text Block] Disclosure of accounting policy for the reporting of a private forward repurchase contract with an unrelated third party. Subsequent Events Subsequent Events, Policy [Policy Text Block] Marketable Securities, Realized Gain (Loss) [Abstract] Marketable Securities, Realized Gain (Loss) [Abstract] Gross realized gains Available-for-sale Securities, Gross Realized Gains Gross realized losses Available-for-sale Securities, Gross Realized Losses OTTI write-downs Net realized gains from available-for-sale securities Marketable Securities, Available-for-Sale And Held-to-Maturity Securities, Realized Gain (Loss) This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as available-for-sale or held-to-maturity. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Net realized gains from nonmarketable equity investments Net Gains (Losses) From Nonmarketable Equity Investments Net Gains (Losses) From Nonmarketable Equity Investments. Net realized gains from debt securities and equity investments Gain (Loss) On Available-for-Sale And Held-to-Maturity Investments This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as available-for-sale or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments. Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Offshore Funds [Member] Private Equity Funds, Foreign [Member] Hedge funds [Member] Hedge Funds [Member] Private Equity Funds [Member] Private Equity Funds [Member] Venture capital funds [Member] Venture Capital Funds [Member] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] Fair value Alternative Investments, Fair Value Disclosure Unfunded commitments Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments Redemption frequency Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Frequency 2 States the frequency (for example, annually, semi-annually, quarterly) with which the entity can redeem its investment, or portion thereof, for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category. Redemption notice period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Notice Period Fair Value of cost method NMEI funds using NAV Fair Value of cost method NMEI funds using NAV Fair Value of nonmarketable equity investments in alternative investment funds using net asset value to evaluate whether nonrecurring fair value adjustments should be recorded in the current period. Alternative Investments, Assets With Redemption Restrictions, Fair Value Disclosure Alternative Investments, Assets With Redemption Restrictions, Fair Value Disclosure This element represents the total fair market value of investments in certain entities that calculate net asset value per share (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), with redemption restrictions. Significant Accounting Policies, Transactions [Table] Significant Accounting Policies, Transactions [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Summary of Significant Accounting Policies [Line Items] Summary of Significant Accounting Policies [Line Items] Supplemental cash flow information - Noncash activities Supplemental Cash Flow Information [Abstract] Trading assets retained from securitization of MHFS Transfers From Mortgage Held For Sale To Trading Assets Transfers from mortgage held for sale to trading assets. Transfers From Mortgage Held For Sale To Mortgage Service Rights Transfers From Mortgage Held For Sale To Mortgage Service Rights Transfers from mortgages held for sale to capitalized mortgage servicing rights. Transfers from loans to MHFS Net Transfers From Loans To Mortgage Held For Sale Transfers from (to) loans to (from) mortgages held for sale. Transfers from loans to LHFS Transfer of Portfolio Loans and Leases to Held-for-sale Transfers from loans to foreclosed and other assets Transfers from loans to foreclosed assets Transfers from loans to foreclosed assets. Transfers from available-for-sale to held-to-maturity securities Transfers From Available For Sale Securities To Held To Maturity Securities Transfers from available for-sale securities to held-to-maturity securities Summary Of Significant Accounting Policies Textuals [Abstract] Summary Of Significant Accounting Policies Textuals [Abstract] Private forward repurchase contract Common stock repurchased, shares Investment Securities Major Categories Marketable Securities [Table Text Block] Investment Securities Gross Unrealized Losses Over And Under 12 Months Schedule of Unrealized Loss on Investments [Table Text Block] Investment Securities Gross Unrealized Losses By Investment Grade Marketable Securities Gross Unrealized Losses By Investment Grade [Table Text Block] Marketable securities gross unrealized losses by investment grade. Debt Securities Contractual Maturities Investments Classified by Contractual Maturity Date [Table Text Block] Investment Securities Realized Gains And Losses Realized Gain (Loss) on Investments [Table Text Block] Investment Securities And Nonmarketable Equity Securities Other Than Temporary Impairment Marketable Securities And Nonmarketable Equity Securities Other Than Temporary Impairment [Table Text Block] Marketable securities and nonmarketable equity securities other than temporary impairment. Debt Securities Other Than Temporary Impairment Debt securities Other Than Temporary Impairment Debt Securities Available For Sale Other Than Temporary Impairment. Credit Loss Component Of Credit-Impaired Debt Securities Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] Loans and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Financing Receivable, Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Domain] Financing Receivable, Troubled Debt Restructuring [Domain] Trial modifications [Member] Trial modifications [Member] Loans that are in trial payment periods before they can be permanently modified. Trial modifications are troubled debt restructuring. Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Loans remodified Loans remodified Recorded investment of loans granted a concession (e.g., principal forgiveness, interest rate concession, other) during the current reporting period and modified in a previous quarter. These loans may be modified more than once. Financing Receivable Modifications Principal Forgiven Financing Receivable Modifications Principal Forgiven The principal amount of the outstanding recorded investment related to financing receivables that have been forgiven as a result of modifications of troubled debt restructurings. Primary modification type Primary Modification Type [Abstract] Primary modification type abstract. Principal Recorded Investment, Amount After Loan Modification To Principal Amount of outstanding recorded investment after modification related to loans with principal forgiveness at the time of the modification, contingent principal forgiveness granted over the life of the loan based on borrower performance, or principal that has been legally separated and deferred to the end of the loan with a zero percent contractual interest rate. Interest rate reduction Recorded Investment, Amount After Loan Modification Related To Interest Rate Reduction Amount of outstanding recorded investment after modification related to a contractual reduction in the loan's interest rate. Other concessions Recorded Investment, Amount After Loan Modification Related To Other Concessions Amount of outstanding recorded investment after modification related to loans for which the interest rate is not commensurate with the credit risk. These modifications would include renewals, terms extensions and other interest rate and non interest adjustments, but exclude principal modifications and modifications to reduce the interest rate. Total Recorded Investment Amount Of Loans Modified The amount of the outstanding recorded investment related to financing receivables that have been modified in troubled debt restructurings after the financing receivable has been modified. Financial effects of modifications Financial effects of modifications [Abstract] Financial effectf of modifications. Charge-offs Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Weighted average interest rate reduction Weighted Average Rate Reduction Related To Loan Modifications Amount of weighted average reduction for those loan modifications involving interest rate reductions expressed as a percentage. It is calculated as the difference between the interest rate immediately prior to the loan modification and the rate immediately after the loan modification, weighted based on recorded investment of the loan. Recorded investment related to interest rate reduction Recorded Investment of Loans Modified by Interest Rate Reduction Amount of outstanding recorded investment for financing receivables that have been classified as troubled debt restructurings that included a reduction of interest rate. Geographic Distribution [Axis] Geographic Distribution [Axis] Geographic Distribution [Axis] Geographic Distribution [Domain] Geographic Distribution [Domain] [Domain] for Geographic Distribution [Axis] Geographic Distribution, Foreign [Member] Geographic Distribution, Foreign [Member] Geographic Distribution, Foreign [Member] Fair Values of Assets and Liabilities Fair Value Disclosures [Text Block] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table] Trading assets [Member] Trading Securities [Member] Available-for-sale securities [Member] Available-for-sale Securities [Member] Non modified loans [Member] Non modified loans [Member] Non modified loans [Member] Residential [Member] Residential Portfolio Segment [Member] Government Insured Or Guaranteed [Member] Government Insured Or Guaranteed [Member] Government insured or guaranteed foreclosed assets. Non Government Insured Or Guaranteed [Member] Non Government Insured Or Guaranteed [Member] Non-government insured or guaranteed foreclosed assets. Venture Capital Funds [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Estimated fair value [Member] Estimate of Fair Value Measurement [Member] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] Fair Values of Assets and Liabilities (Textual) [Abstract] Fair Values of Assets and Liabilities Textual [Abstract] Fair Values of Assets and Liabilities Textual Abstract. Net unrealized gains (losses) on trading securities Trading Securities, Change in Unrealized Holding Gain (Loss) Trading and available for sale securities Trading and Available for Sale Securities, Fair Value Disclosure Trading and available for sale securities measured at fair value as of the balance sheet date Cost to service per loan Fair Value Assumptions, Cost to Service The expected cost per loan of servicing a portfolio of loans which includes estimates for unreimbursed expenses (including delinquency and foreclosure costs) that may occur as a result of servicing such loan portfolios. Total liabilities recorded at fair value FV of NMEI in private equity funds where nonrecurring FV adjustments were recorded Fair Value Of Nonmarketable Equity Investments In Private Equity Funds Where Nonrecurring Fair Value Adjustments Were Recorded Fair Value of nonmarketable equity investments in private equity funds where nonrecurring fair value adjustments were recorded during the period and the funds have a probability of being sold for an amount different from the net asset value. Fair Value of cost method NMEI using NAV Fair Value of NMEI using NAV Fair Value of nonmarketable equity investments where net asset value was used Fair Value of nonmarketable equity investments where net asset value was used to record a nonrecurring fair value adjustment. Redemption restriction for investment Alternative Investment, Distributions From Underlying Assets, Distribution Period Alternative Investment, Distributions From Underlying Assets, Distribution Period Alternative Investment, Distributions From Underlying Assets, Distribution Period Investment Fund Liquidation Period Investment Fund Liquidation Period Liquidation period for investment fund Capital lease obligation Capital Lease Obligations Loan commitments, standby letters of credit and similar letters of credit Loan Commitments And Standby, Commercial And Similar Letters of Credit This element represent the aggregate carrying amount of deferred fees plus the related reserve for loan commitments and standby, commercial and similar lines of credit. Preferred Stock Preferred Stock [Text Block] Perpetual Preferred Securities [Member] Collateralized Loan Obligations [Member] OTTI write-downs included in earnings (Abstract) Other than Temporary Impairment Losses, Investments [Abstract] Total investment securities Nonmarketable equity investments Cost And Equity Method, Other Than Temporary Impairment This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost or equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. Total OTTI write-downs included in earnings Other Than Temporary Impairment Investments Portion Recognized In Earnings Net The amount of other than temporary impairment losses on equity securities, other than temporary impairment related to credit losses on debt securities, and other than temporary impairment losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes other than temporary impairment losses recognized during the period on investments accounted for under the cost and equity methods of accounting. Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument [Member] Designated as Hedging Instrument [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Derivative [Line Items] Derivative [Line Items] Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions Derivatives (Textual) [Abstract] Derivatives (Textual) [Abstract] Derivatives Textual Abstract. Certain derivatives combined for designation as a hedge on a single instrument Basis Swaps Combined With Receive Fixed Rate Pay Floating Rate Swaps Notional Basis swaps combined with receive fixed rate pay floating rate swaps, notional. Derivative assets subject to enforceable master netting arrangements Derivative Asset, Fair Value, Amount Offset Against Collateral, Subject to Master Netting Arrangements Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against an obligation to return collateral, subject to master netting arrangements. Derivative liabilities subject to enforceable master netting arrangements Derivative Liability, Fair Value, Amount Offset Against Collateral, Subject to Master Netting Arrangements Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against the right to receive collateral, subject to master netting arrangements. Derivative assets not subject to enforceable master netting arrangements Derivative Asset Not Subject To Enforceable Master Netting Arrangement Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement. Amounts include balances related to counterparties that are not subject to a master netting arrangement and counterparties that are subject to a master netting arrangement for which we have not sought or obtained a legal opinion for the enforceability of netting under those agreements. Derivative liabilities not subject to enforceable master netting arrangements Derivative Liability Not Subject To Enforceable Master Netting Arrangement Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement. Amounts include balances related to counterparties that are not subject to a master netting arrangement and counterparties that are subject to a master netting arrangement .for which we have not sought or obtained a legal opinion for the enforceability of netting under those agreements. Valuation adjustments for derivative assets Derivative Credit Risk Valuation Adjustment, Derivative Assets Valuation adjustments for derivative liabilities Derivative Credit Risk Valuation Adjustment, Derivative Liabilities Cash collateral netted against derivative assets Derivative Asset, Collateral, Obligation to Return Cash, Offset Cash collateral netted against derivative liabilities Derivative Liability, Collateral, Right to Reclaim Cash, Offset Time value component recognized as net interest income (expense) on forward derivatives excluded from the assessment of hedge effectiveness Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net Deferred net gains on derivatives in other comprehensive income Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Maximum length of time hedged in cash flow hedge Maximum Length of Time Hedged in Cash Flow Hedge Change in value of derivatives excluded from assessment of cash flow hedge effectiveness Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net Gains (losses) on derivatives used to hedge residential mortgage servicing rights Net Derivative Gains (Losses) From Economic Hedges Related To Mortgage Servicing Activities Net derivative gains (losses) from economic hedges related to mortgage servicing activities. Aggregate fair value of derivatives used for economic hedges net asset (liability) Fair Value of Net Asset (Liability) From Economic Hedges Related To Mortgage Servicing Activities Aggregate fair value of derivatives used for economic hedges net asset (liability). Aggregate fair value of derivative loan commitments net asset (liability) Aggregate Fair Value Of Derivative Loan Commitments Net Asset (Liability) Aggregate fair value of derivative loan commitments net asset (liability). Aggregate fair value of derivative instruments with credit-risk-related contingent features, net liability Derivative, Net Liability Position, Aggregate Fair Value Collateral for derivative instruments with credit-risk-related contingent features Collateral Already Posted, Aggregate Fair Value Additional collateral for derivative instruments with credit-risk-related contingent features Additional Collateral, Aggregate Fair Value Unreimbursed Direct Servicing Costs Unreimbursed Direct Servicing Costs Direct servicing costs of a servicer of financial assets that are not reimbursed, primarily related to foreclosure expenses and other interest costs. Securitizations and Variable Interest Entities Securitizations And Variable Interest Entities [Text Block] Disclosure of classifications of assets and liabilities associated with transactions with QSPEs and VIEs. Banking and Thrift [Abstract] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Wells Fargo & Company [Member] Parent Company [Member] Wells Fargo Bank, NA [Member] Subsidiaries [Member] Capital Standard Requirements [Axis] Capital Standard Requirements [Axis] Information on capital requirements for banks. Capital Standard Requirements [Domain] Capital Standard Requirements [Domain] Set of capital requirements for banks. Advance Approach Under Basel III [Member] Advance Approach Under Basel Three [Member] Calculation of ratios using the Standardized Approach capital framework under Basel III which is a regulatory standard on bank capital adequacy, stress testing and market liquidity risk established by the Basel Committee on Banking Supervision to strengthen bank capital requirements by increasing bank liquidity and decreasing bank leverage. Standardized Approach Under Basel III [Member] Standardized Approach Under Basel Three [Member] Calculation of ratios using the Standardized Approach capital framework under Basel III which is a regulatory standard on bank capital adequacy, stress testing and market liquidity risk established by the Basel Committee on Banking Supervision to strengthen bank capital requirements by increasing bank liquidity and decreasing bank leverage. General Approach Under Basel III [Member] General Approach Under Basel Three [Member] Calculation of ratios using the General Approach capital framework under Basel III which is a regulatory standard on bank capital adequacy, stress testing and market liquidity risk established by the Basel Committee on Banking Supervision to strengthen bank capital requirements by increasing bank liquidity and decreasing bank leverage. Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Regulatory And Agency Capital Requirements [Abstract] Regulatory Capital Requirements [Abstract] Regulatory capital: Tier One Risk Based Capital [Abstract] Common equity tier 1 Tier One Risk Based Common Equity Capital Tier 1 Risk Based Common Equity Capital as defined in the regulations. Tier 1 Tier One Risk Based Capital Total Capital Assets: Risk Based Ratios [Abstract] Risk-weighted Risk Weighted Assets Adjusted average Adjusted Average Assets Average assets used in calculation of Tier 1 Leverage Capital to average assets as defined in the regulations. Regulatory capital ratios: Capital [Abstract] Common equity tier 1 capital Tier One Risk Based Common Equity Capital to Risk Weighted Assets Tier 1 common equity capital divided by risk weighted assets as defined by regulations. Tier 1 common equity ratio required for capital adequacy purposes Tier One Risk Based Common Equity Required for Capital Adequacy to Risk Weighted Assets The minimum Tier One Common Equity Ratio (Tier one common equity divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. Tier 1 capital Tier One Risk Based Capital to Risk Weighted Assets Total capital Capital to Risk Weighted Assets Tier 1 leverage Tier One Leverage Capital to Average Assets Tier 1 capital ratio required for capital adequacy purposes Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Total capital ratio required for capital adequacy purposes Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 leverage capital ratio required for capital adequacy purposes Tier One Leverage Capital Required for Capital Adequacy to Average Assets Regulatory and Agency Capital Requirements (Textual) [Abstract] Regulatory and Agency Capital Requirements (Textual) [Abstract] Regulatory and Agency Capital Requirements Textual Abstract. Minimum leverage ratio for banking organizations Minimum Leverage Ratio For Banking Organizations Minimum leverage ratio for banking organizations. Loans Serviced by Types of Financial Instruments [Axis] Loans Serviced by Types of Financial Instruments [Axis] Pertinent information about loans serviced, by class of loan being serviced. Residential Mortgage Servicing [Member] Residential Mortgage Servicing [Member] Residential Mortgage Servicing. Components of Managed Servicing Portfolio [Abstract] Components of Managed Servicing Portfolio [Abstract] Components of Managed Servicing Portfolio Abstract. Serviced for others Loans Serviced For Others Loans serviced for others. Owned loans serviced Owned Loans Serviced Owned loans serviced. Subserviced for others Loans Subserviced For Others Loans subserviced for others. Total managed servicing portfolio Managed Servicing Portfolio Managed servicing portfolio. Ratio of MSRs to related loans serviced for others Ratio Of Mortgage Servicing Rights To Related Loans Serviced For Others Ratio of MSRs to related loans serviced for others. Schedule of Servicing Assets at Fair Value [Table] Schedule of Servicing Assets at Fair Value [Table] Types of Financial Instruments [Domain] Carried at fair value [Member] Carried at Fair Value [Member] Carried at Fair Value. Valuation Model Inputs or Assumptions [Axis] Valuation Model Inputs or Assumptions [Axis] Valuation Model Inputs or Assumptions [Domain] Valuation Model Inputs or Assumptions [Domain] Mortgage interest rates [Member] Mortgage Interest Rates [Member] Mortgage interest rates used to estimate the fair value of servicing assets and servicing liabilities. Servicing and foreclosure costs [Member] Servicing And Foreclosure Costs [Member] Servicing and foreclosure costs, such as costs to service and unreimbursed foreclosure costs, used to estimate the fair value of servicing assets and servicing liabilities. Discount Rates [Member] Discount Rates [Member] Discount rates, excluding mortgage interest rates, used to estimate the fair value of servicing assets and servicing liabilities. Prepayment estimates and other [Member] Prepayment Estimates And Other [Member] Prepayment and other valuation estimates used to estimate the fair value of seriving assets and servicing liabilities. Servicing Assets at Fair Value [Line Items] Servicing Assets at Fair Value [Line Items] Changes in MSRs measured at fair value Servicing Asset at Fair Value, Amount [Roll Forward] Fair value, beginning of period Servicing from securitizations or asset transfers Servicing Asset at Fair Value, Additions Sales and other reductions Servicing Asset at Fair Value, Disposals Net additions Net Additions (Reductions) to Servicing Assets at Fair Value from Origination of Mortgage Servicing Rights (MSRs) or Servicing Assets at Fair Value Disposals The net additions (reductions) in the fair value of servicing assets from the origination of mortgage servicing rights (MSRs) or disposals of servicing assets at fair value. Changes in fair value: Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions [Abstract] Net changes in valuation model inputs or assumptions Other changes in fair value Servicing Asset at Fair Value, Other Changes in Fair Value Total changes in fair value Servicing Asset at Fair Value, Period Increase (Decrease) Fair value, end of period Consumer Loans Exempt Under Regulatory Rules [Member] Consumer Loans Exempt Under Regulatory Rules [Member] Consumer Loans Exempt Under Regulatory Rules [Member] Commercial Real Estate Mortgage and Construction Loans [Member] Commercial Real Estate Mortgage and Construction Loans [Member] Commercial Real Estate Mortgage and Construction Loans [Member]. FHA Insured/VA Guaranteed [Member] Consumer Real Estate Loans Government Guaranteed Or Insured [Member] Consumer real estate loans government guaranteed or insured Member. Student Loans guaranteed under FFELP [Member] Student Loans, Government Guaranteed [Member] Student Loans, Government Guaranteed [Member]. Financing Receivable Status [Axis] Financing Receivable Status [Axis] Financing Receivable Status [Domain] Financing Receivable Status [Domain] Financing Receivable 90 Days Or More Past Due [Member] Financing Receivable 90 Days Or More Past Due [Member] Financing receivables that are 90 days or more past due. In process of foreclosure [Member] In Process Of Foreclosure [Member] In Process Of Foreclosure [Member] Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] Impaired Financing Receivable [Axis] Impaired Financing Receivable [Axis] Impaired Financing Receivable Axis. Impaired Financing Receivable [Domain] Impaired Financing Receivable [Domain] Impaired Financing Receivable Domain. Impaired Loans [Member] Impaired Loans [Member] The unpaid pricipal balance, recorded investment and related allowance for credit losses categories related to impaired financing receivables. Financing Receivable Information By Accrual Status [Axis] Financing Receivable Information By Accrual Status [Axis] Financing receivable information by interest accrual status axis. Receivable Information By Accrual Status [Domain] Receivable Information By Accrual Status [Domain] Financing Receivable Accruing [Member] Financing Receivable Accruing [Member] A category of financing receivables that are accruing interest. Financing Receivable Nonaccruing [Member] Financing Receivable Nonaccruing [Member] A category of financing receivables that are placed on nonaccrual status. Trial Modification Programs [Axis] Trial Modification Programs [Axis] Trial Modification Programs Axis. Trial Modifications Programs [Domain] Trial Modifications Programs [Domain] Trial modification programs domain. Home Affordable Modification Program [Member] Home Affordable Modification Program [Member] United States Treasury's first lien modification program (HAMP). Second Lien Modification Program [Member] Second Lien Modification Program [Member] United States Treasury's second lien modification program (2MP). Proprietary Program [Member] Proprietary Program [Member] Wells Fargo Bank's proprietary trial loan modification program. Financing Receivables Held For Sale [Axis] Financing Receivables Held For Sale [Axis] Financing Receivables Held For Sale [Domain] Financing Receivables Held For Sale [Domain] Accounts Notes Loans And Financing Receivable (Textual) [Abstract] Accounts Notes Loans And Financing Receivable Textual [Abstract] Accounts Notes Loans And Financing Receivable (Textual). Unearned income, net deferred loan fees and unamortized discount and premium Loans and Leases Receivable, Deferred Income Financing receivable, certain purchases net of certain transfers to held for sale Financing Receivable Certain Purchases Net Of Certain Transfers To Held For Sale The amount of certain purchases of financing receivables, net of certain transfers to held for sale portfolio during the period. Temporary advance arrangements Financing Receivable, Temporary Advance Arrangements Financing Receivable, Temporary Advance Arrangements Commercial letters of credit, international trade Commercial Letters of Credit International The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. Loans, 90 days or more past due Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due 90 days or more past due and still accruing 180 or more DPD and still accruing, percentage of portfolio Financing Receivables Equal To Or Greater Than 180 Days Past Due Percentage Of Portfolio Financing receivables that are equal to or greater than 180 days past due, expressed as a percentage of its portfolio. FICO not required Financing Receivable, Recorded Investment, FICO Not Required Financing receivables with no required FICO score. High value properties, threshold ($1 million or more) High Value Properties, Threshold Dollar threshold at which real estate is considered a high value property, based upon the original value. Recorded investment amount in consumer mortgage loans collateralized by residential real estate property Recorded Investment Amount In Consumer Mortgage Loans Collateralized By Residential Real Estate Property Recorded Investment Amount In Consumer Mortgage Loans Collateralized By Residential Real Estate Property Impaired loans Impaired Financing Receivable, Recorded Investment Total unfunded loan commitments on troubled debt restructurings Loans and Leases Receivable, Impaired, Commitment to Lend Financing receivable modifications, principal forgiven Nonperforming status threshold Threshold Period Past Due For Nonperforming Status Of Financing Receivables Threshold Period Past Due for Nonperforming Status of Financing Receivables Total PCI loans (unpaid principal balance) Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table] Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table] Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption by Type [Axis] Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of Adverse Change in Assumption, by Type [Axis] Residential mortgage servicing rights [Member] Interest-Only Strips [Member] Interest-Only-Strip [Member] Subordinated bonds [Member] Subordinated bonds [Member] Subordinated bonds Member. Senior bonds [Member] Senior bonds [Member] Senior bonds member. Securitizations, by Type [Axis] Securitizations, by Type [Axis] Securitizations, by Type [Domain] Securitizations, by Type [Domain] Commercial Securitizations [Member] Commercial Securitizations [Member] Consumer Securitizations [Member] Consumer Securitizations [Member] Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items] Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items] Fair value of interests held Transferor's Interests in Transferred Financial Assets, Fair Value Expected weighted-average life (in years) Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Weighted Average Life Key economic assumptions: Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Key Economic Assumptions [Abstract] Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Key Economic Assumptions [Abstract] Prepayment speed assumption Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed Decrease in fair value from: Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Prepayment Speed Assumption, Decrease In Fair Value [Abstract] Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Prepayment Speed Assumption, Decrease In Fair Value [Abstract] 10% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Prepayment Speed 25% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of Other than 10 or 20 Percent Adverse Change in Prepayment Speed Discount rate assumption Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate Decrease in fair value from: Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Discount Rate Assumption, Decrease In Fair Value [Abstract] Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Discount Rate Assumption, Decrease In Fair Value [Abstract] 100 basis point increase Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor, Servicing Assets Or Liabilities Impact Of Hundred Basis Point Adverse Change In Discount Rate Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor, Servicing Assets Or Liabilities Impact Of Hundred Basis Point Adverse Change In Discount Rate. 200 basis point increase Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Two Hundred Basis Point Adverse Change In Discount Rate Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Two Hundred Basis Point Adverse Change In Discount Rate. Cost to service assumption ($ per loan) Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Cost To Service The cost to service assumption for securitized financial assets. This is used as a key input and assumption in measuring the fair value of assets or liabilities that relate to a transferor's continuing involvement, if any, as of the date of the latest statement of financial position presented. Decrease in fair value from: Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Cost To Service Assumption, Decrease In Fair Value [Abstract] Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Cost To Service Assumption, Decrease In Fair Value [Abstract] 10% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Cost to Service The hypothetical financial impact of a 10 percent adverse change of cost to service on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. 25% adverse change Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of Other than 10 or 20 Percent Adverse Change in Cost to Service The hypothetical financial impact of a specified adverse percentage change in cost to service on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Credit loss assumption Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Expected Credit Losses Decrease in fair value from: Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Credit Loss Assumption, Decrease In Fair Value [Abstract] Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Credit Loss Assumption, Decrease In Fair Value [Abstract] 10% higher losses Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Expected Credit Losses 25% higher losses Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact Other than 10 or 20 Percent Adverse Change in Expected Credit Loss Supplemental Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Schedule of Securitization or Asset-backed Financing Arrangements, Financial Asset for which Transfer is Accounted as Sale [Table] Schedule of Securitization or Asset-backed Financing Arrangements, Financial Asset for which Transfer is Accounted as Sale [Table] Receivable [Domain] Non-Agency Securitizations And Whole Loan Transactions [Member] Non-Agency Securitizations And Whole Loan Transactions [Member] Category of loans that are non-agency securitizations and whole loan transactions. Agency securitizations Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, and Government National Mortgage Association [Member] Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, and Government National Mortgage Association [Member] Mortgage loans [Member] Mortgages [Member] Other financial assets [Member] Other financial assets [Member] Other financial assets. Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] Cash Flow Securitizations [Abstract] Cash Flows Between Transferor and Transferee [Abstract] Proceeds from securitizations and whole loan sales Cash Flows Between Transferor and Transferee, Proceeds from New Transfers Fees from servicing rights retained Cash Flows Between Transferor and Transferee, Servicing Fees Cash flows from other interests held Cash Flows Between Transferor and Transferee, Beneficial Interest Repurchases of assets/loss reimbursements Cash Flows Between Transferor and Transferee, Purchases of Previously Transferred Financial Assets Servicing advances, net of repayments Cash Flows Between Transferor and Transferee, Servicing Fee Advances Financial Information of Operating Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] 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 Federal Funds Sold Securities Purchased Under Resale Agreements And Other Short Term Investments [Table Text Block] Federal Funds Sold Securities Purchased Under Resale Agreements And Other Short Term Investments Tables TextBlock Fair Value Assets Measured On Nonrecurring Basis Increase Decrease [Table] Fair Value Assets Measured On Nonrecurring Basis Increase Decrease [Table] Fair Value Assets Measured On Nonrecurring Basis Increase Decrease Table Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items] Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items] Mortgages held for sale (LOCOM) Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis, Mortgages Held For Sale Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis Mortgages Held For Sale Loans held for sale Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis, Loans Held For Sale Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis Loans Held For Sale Loans Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis, Loans Receivable Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis Loans Other assets Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis, Other Assets Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis Other Assets Total Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis Increase Decrease In Fair Value Assets Measured On Nonrecurring Basis Consumer Real Estate Loans Government Guaranteed Or Insured [Member] Financing Receivable Certain Purchases Net Of Certain Transfers To Held For Sale Loans and Allowance for Credit Losses, Significant Activity [Abstract] Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Purchases Financing Receivable, Significant Purchases Sales Financing Receivable, Significant Sales Transfers to MHFS/LHFS Financing Receivable, Reclassification to Held-for-sale Nonaccrual Loans [Abstract] Past Due Financing Receivables Nonaccruing [Abstract] Past Due Financing Receivables, Nonaccruing. Other Assets Other Assets Disclosure [Text Block] Commercial Mortgage Backed Securities [Member] Equity Securities, Other 1 [Member] Impairment in Value of Asset [Axis] Impairment in Value of Asset [Axis] Information by type of asset written down to an amount that can be expected to be realized or recovered. Impairment in Value of Asset [Domain] Impairment in Value of Asset [Domain] Charges against earnings resulting from the aggregate write down of assets to amounts that can be expected to be realized or recovered. Credit-related OTTI [Member] Credit Related To Other Than Temporary Impairment [Member] Credit Related To Other Than Temporary Impairment Member. Intent-to-sell OTTI [Member] Other Than Temporary Impairment On Securities We Intend To Sell [Member] Other than temporary impairment on securities we intend to sell. OTTI on debt securities (Abstract) Total changes to OCI for non-credit-related OTTI Cost And Equity Method, Other Than Temporary Impairment Other Than Temporary Impairment Investments Portion Recognized In Earnings Net Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Available-for-sale securities [Member] Long-term debt [Member] Long-term Debt [Member] Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract] Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract] Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships. Net interest income (expense) recognized on derivatives Gain (Loss) on Fair Value Hedges Recognized in Net Interest Income Gain (loss) on fair value hedges recognized in net interest income. Gains (losses) recorded in noninterest income Derivative, Net Hedge Ineffectiveness Gain (Loss), Components [Abstract] Derivative, Net Hedge Ineffectiveness Gain (Loss), Components [Abstract] Recognized on derivatives Derivative, Net Hedge Ineffectiveness Gain (Loss), Component recognized on Derivative Derivative, Net Hedge Ineffectiveness Gain (Loss), Component recognized on Derivative. Recognized on hedged item Derivative, Net Hedge Ineffectiveness Gain (Loss), Component recognized on Hedged Item Derivative, Net Hedge Ineffectiveness Gain (Loss), Component recognized on Hedged Item. Net recognized on fair value hedges (ineffective portion) Derivative, Net Hedge Ineffectiveness Gain (Loss) PCI loans [Abstract] Purchased Credit Impaired Loans [Abstract] Purchased Credit Impaired Loans. Gross Carrying Value of Intangible Assets And Accumulated Amortization Schedule of Intangible Assets and Goodwill [Table Text Block] Amortization Expense for Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Allocation of Goodwill to Operating Segments Schedule of Goodwill [Table Text Block] Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net Net Gains Losses Recognized Related to Derivatives in Cash Flow Hedging Relationships [Abstract] Net Gains Losses Recognized Related to Derivatives in Cash Flow Hedging Relationships [Abstract] Net Gains Losses Recognized Related to Derivatives in Cash Flow Hedging Relationships. Gains (losses) (pre tax) recognized in OCI on derivatives Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Gains (pre tax) reclassified from cumulative OCI into net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Gains (losses) (pre tax) recognized in noninterest income for hedge ineffectiveness. Gain (Loss) Recognized In Noninterest Income For Hedge Ineffectiveness The net gain (loss) recognized in noninterest income representing the amount of the cash flow hedges' ineffectiveness. Components Of Other Assets [Table] Components Of Other Assets [Table] Low Income Housing Tax Credit Equity Method Investments [Member] Low Income Housing Tax Credit Equity Method Investments [Member] Low Income Housing Tax Credit Equity Method Investments. Perpetual Preferred Securities NonMarketable [Member] Perpetual Preferred Securities NonMarketable [Member] PerpetualPreferredSecuritiesMemberNonMarketable [Member] Components of Other Assets [Line Items] Components of Other Assets [Line Items] Cost method investments Cost Method Investments Cost Method Investments, Fair Value Disclosure Cost Method Investments, Fair Value Disclosure Equity Method Investments Equity Method Investments Income (Loss) from Affordable Housing Projects, Equity Method Investments Income (Loss) from Affordable Housing Projects, Equity Method Investments Amount of investment income (loss) of qualified affordable housing project investments accounted for using the equity method. Low income housing tax credit (LIHTC) investment total tax benefits Affordable Housing Tax Credits and Other Tax Benefits, Amount Amount of affordable housing tax credits and other tax benefits recognized. Low income housing tax credit (LIHTC) investment tax credits Affordable Housing Tax Credits, Amount Amount of affordable housing tax credits recognized. Low income housing tax credit (LIHTC) investment liability for unfunded commitments Qualified Affordable Housing Project Investments, Commitment Amount of commitment or contingent commitments to qualified affordable housing project investments. Low income housing tax credit (LIHTC) investment, year liability is expected to be paid Affordable Housing Tax Credits Commitment, Payment Period Period over which contingent commitments to qualified affordable housing project investments are expected to be paid. Total Notional or Contractual Amounts and Fair Values for Derivatives Schedule of Derivative Instruments [Table Text Block] Balance Sheet Offsetting of Derivative Assets and Liabilities Offsetting Assets and Liabilities [Table Text Block] Tabular disclosure of derivative assets and liabilities that are subject to offsetting, including master netting arrangements. Net Gains (Losses) Recognized in the Income Statement Related to Derivatives in Fair Value Hedging Relationships Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Net Gains (Losses) Recognized Related to Derivatives in Cash Flow Hedging Relationships Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Net Gains (Losses) Recognized in the Income Statement Related to Derivatives not Designated as Hedging Instruments Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Details of Sold and Purchased Credit Derivatives Disclosure of Credit Derivatives [Table Text Block] Financing Receivable, Allowance for Credit Losses [Roll Forward] Allowances related to business combinations/other Components: Loans And Leases Receivable, Allowance, Components [Abstract] Loans And Leases Receivable, Allowance, Components [Abstract] Allowance for loan losses Allowance for unfunded credit commitments Allowance For Unfunded Credit Commitments The allowance for unfunded commitments represent the reserve to cover probable credit losses related to unfunded credit commitments. Net loan charge-offs (annualized) as a percentage of average total loans Net Loan Charge Offs Annualized As Percentage Of Average Loans Net loan charge offs annualized as a percentage of average total loans. Allowance for loan losses as a percentage of total loans Allowance For Loan Losses As Percentage Of Loans Allowance for loan losses as a percentage of total loans. Allowance for credit losses as a percentage of total loans Allowance For Credit Losses As Percentage Of Loans Allowance for credit losses as a percentage of total loans. Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table] Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Table] Disclosure of information about the nature and risks of short-term collateralized financing obtained through repurchase agreements, securities lending transactions and repurchase-to-maturity transactions, accounted for as secured borrowings. Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Securities or Other Assets Sold under Agreements to Repurchase, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Assets Sold under Agreements to Repurchase, Maturity Period [Domain] Overnight/Continuous [Member] Maturity Overnight [Member] Up to 30 days [Member] Maturity up to 30 days [Member] 30-90 days [Member] Maturity 30 to 90 Days [Member] Over 90 days [Member] Maturity over 90 days [Member] Non-Agency Mortgage-backed Securities [Member] Non-Agency Mortgage-backed Securities [Member] Debt securities collateralized by mortgage loans (mortgages) from non-agency issuers. Asset-backed Securities [Member] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] [Line Items] for Disclosure of information about the nature and risks of short-term collateralized financing obtained through repurchase agreements, securities lending transactions and repurchase-to-maturity transactions, accounted for as secured borrowings. Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract] Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract] Repurchase Agreements Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a financial asset repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same financial asset at a date certain for a specified price. Includes repurchase-to-maturity transactions and liabilities not subject to a master netting arrangement. Securities Lending Securities Loaned, Including Not Subject to Master Netting Arrangement and Assets other than Securities Transferred Amount, before effects of master netting arrangements, of financial assets loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and financial assets transferred other than securities that qualify as secured borrowings. Total Repurchases and Securities Lending Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement Amount, before effects of master netting arrangements, of financial assets loaned to entities in exchange for collateral and funds outstanding borrowed in the form of a financial asset repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same financial assets at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement. External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Domain] External Credit Rating by Grouping [Domain] Investment grade [Member] External Credit Rating, Investment Grade [Member] Unrated investment grade securities [Member] Unrated Investment Grade Securities [Member] Unrated Investment Grade Securities [Member] Asset-backed Securities Collateralized by Auto Leases or Loans and Cash Reserves [Member] Asset-backed Securities, Securitized Loans and Receivables [Member] Asset-backed Securities Collateralized by Dealer Floorplan Loans [Member] Asset-backed Securities Collateralized by Dealer Floorplan Loans [Member] Asset Backed Securities Collateralized By Dealer Floorplan Loans. Investment Securities (Textual) [Abstract] Additional Marketable Securities (Textual) [Abstract] Additional Investment Securities Textual. Cost, available-for-sale securities Available-for-sale Securities, Amortized Cost Basis Held-to-maturity securities Gross unrealized losses, investment securities Marketable Securities, Gross Unrealized Losses 2 Amount at a point in time of unrealized losses before deducting unrealized gains on investments in marketable securities. Fair value, investment securities OTTI write-downs on held-to-maturity securities Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities Employee Benefits Pension and Other Postretirement Benefits Disclosure [Text Block] Guarantees, Pledged Assets and Collateral Guarantees [Text Block] Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Table] Investment [Axis] Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Line Items] Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Line Items] Federal funds sold and securities purchased under resale agreements Federal Funds Sold and Securities Purchased under Agreements to Resell Interest-earning deposits Interest-bearing Deposits in Banks and Other Financial Institutions Other short-term investments Other Short-term Investments Total Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Textual [Abstract] Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Textual [Abstract] Unfunded contractual commitments Resale Agreements, Unfunded Commitments Resale agreements from a central clearing organization, Unfunded contractual commitments. Funded contractual commitments Resale Agreements, Funded Amounts Outstanding Resale agreements from a central clearing organization, Funded contractual commitments. Securities purchased under long-term resale agreements Securities Purchased under Agreements to Resell Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Federal bank stock [Member] Investment in Federal Home Loan Bank Stock [Member] Private equity and other [Member] Equity Investments Other [Member] Investments held in private equity funds and other investments. Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Core deposit intangibles [Member] Core Deposits [Member] Customer relationship and other amortized intangibles [Member] Customer Relationships [Member] Foreclosed Asset By Type [Axis] Foreclosed Asset By Type [Axis] Foreclosed Asset Type [Domain] Foreclosed Asset Type [Domain] Government insured/guaranteed [Member] Non-government insured/guaranteed [Member] Equity method investments Total nonmarketable equity investments Nonmarketable Equity Investments Nonmarketable equity investments, Total. Corporate/bank-owned life insurance Life Insurance, Corporate or Bank Owned, Amount Accounts receivable (4) Accounts Receivable, Net Interest receivable Interest Receivable Customer relationship and other amortized intangibles Finite-Lived Intangible Assets, Net Residential real estate Residential Real Estate Foreclosed Assets Carrying amount as of the balance sheet date of assets secured by residential real property that were received in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance. Non-residential real estate Non Residential Real Estate Foreclosed Assets Carrying amount as of the balance sheet date of assets other than residential real property that were received in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance. Operating lease assets Property Subject to or Available for Operating Lease, Net Due from customers on acceptances Due from Customer Acceptances Other Other Assets, Miscellaneous Income (Expense) Related to Nonmarketable Equity Investments [Abstract] Income Expense Related to Nonmarketable Equity Investments [Abstract] All other Income Expense From All Other Nonmarketable Equity Investments Income (expense) from all other nonmarketable equity investments. Total Net Income Expense From Nonmarketable Equity Investments Total Net income (expense) from nonmarketable equity investments total. Business Combinations [Abstract] Business Combinations Business Combination Disclosure [Text Block] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Credit Contracts Protection Sold [Member] Credit Contracts Protection Sold [Member] Credit Contracts Protection Sold Member. Credit Contracts Protection Purchased [Member] Credit Contracts Protection Purchased [Member] Credit Contracts Protection Purchased Member. Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] Free standing derivatives (economic hedges) [Member] Free standing derivatives (economic hedges) [Member] Free standing derivatives economic hedges member. Customer Accommodation, Trading, And Other Derivatives [Member] Customer Accommodation, Trading, And Other Derivatives [Member] Customer Accommodation, Trading, And Other Derivatives [Member] Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract] Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract] Total Notional Or Contractual Amounts And Fair Values For Derivatives Abstract. Notional or contractual amount Derivative, Notional Amount Fair value asset derivatives, netting Derivative Asset, Amount Offset Against Collateral Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against an obligation to return collateral. Net amounts in consolidated balance sheet Fair value liability derivatives Fair value liability derivatives, netting Derivative Liability, Amount Offset Against Collateral Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset offset against the right to receive collateral. Net amounts in consolidated balance sheet Debt and equity interests [Member] Debt and equity interests [Member] Debt And Equity Interests Member. Servicing assets [Member] Servicing assets [Member] Servicing Assets Member. Derivative [Member] Derivative [Member] Other commitments and guarantees [Member] Other commitments and guarantees [Member] Other Commitments And Guarantees Member. Net assets [Member] Net assets [Member] Net Assets Member. Total exposure [Member] Total exposure [Member] Total maximum exposure to loss from our involvement with unconsolidated VIEs. Conforming Residential Mortgage Loan Securitization [Member] Conforming Residential Mortgage Loan Securitization [Member] Conforming Residential Mortgage Loan Securitization [Member] Other/Nonconforming Residential Mortgage Loan Securitization [Member] Nonconforming Residential Mortgage Loan Securitization [Member] Nonconforming Residential Mortgage Loan Securitization [Member] Collateralized Debt Obligations Debt Securities [Member] Collateralized Debt Obligations Debt Securities [Member] Collateralized Debt Obligations Debt Securities Member. Collateralized Debt Obligations Loans [Member] Collateralized Debt Obligations Loans [Member] Collateralized Debt Obligations Loans Member. Asset-based finance structures [Member] Structured Finance [Member] Tax Credit Structures [Member] Tax Credit Structured Finance [Member] Tax Credit Structured Finance Member. Investment Funds [Member] Investment funds [Member] Investment Funds Member. Other securitizations and transactions [Member] Other securitizations and transactions [Member] Other securitizations and transactions Member. Total VIE assets Variable Interest Entity Nonconsolidated Assets Size of the Variable Interest Entity (VIE) presented as total assets. Carrying value asset (liability) Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net Maximum exposure to loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired Financing Receivable, Average Recorded Investment [Abstract] Impaired Financing Receivable, Average Recorded Investment [Abstract] Average recorded investment Impaired Financing Receivable, Average Recorded Investment Recognized interest income Impaired Financing Receivable Interest Income The total interest income recognized during the time within that period that the financing receivables were impaired. Interest income: Impaired Financing Receivable, Interest Income, Accrual Method [Abstract] Cash basis of accounting Impaired Financing Receivable, Interest Income, Cash Basis Method Other Impaired Financing Receivable, Interest Income, Accrual Method Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Liability for Contingent Litigation Losses [Member] Liability for Contingent Litigation Losses [Member] Liability for contingent litigation losses. Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] In re Interchange Litigation [Member] In re Interchange Litigation [Member] Interchange litigation case In re Securities Lending Litigation [Member] Securities Lending Litigation [Member] Securities lending litigation case Loss Contingencies [Line Items] Loss Contingencies [Line Items] Litigation Settlement, Percentage Of Default Interchange Distributed To Class Merchants Litigation Settlement, Percentage Of Default Interchange Distributed To Class Merchants Litigation Settlement, Percentage Of Default Interchange Distributed To Class Merchants Legal Actions (Textual) [Abstract] Legal Actions (Textual) [Abstract] Legal Actions Textual Abstract. Amounts to be paid in connection with legal or regulatory matters Amounts To Be Paid In Connection With Legal Or Regulatory Matters Amounts to be paid in connection with legal or regulatory matters. Litigation Settlement, Default Interchange Distributed To Class Merchants, Distribution Period Litigation Settlement, Default Interchange Distributed To Class Merchants, Distribution Period Litigation Settlement, Default Interchange Distributed To Class Merchants, Distribution Period Legal actions, number Legal actions, number Number of legal actions outstanding for a particular litigation case during the reporting period. Regulatory And Agency Capital Requirements Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Impaired Loans [Abstract] Impaired Financing Receivable, Recorded Investment [Abstract] Unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance Impaired loans Impaired loans with related allowance for credit losses Impaired Financing Receivable, with Related Allowance, Recorded Investment Related allowance for credit losses Impaired Financing Receivable, Related Allowance Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Acquisition Status [Axis] Acquisition Status [Axis] Acquisition Status [Domain] Acquisition Status [Domain] Pending Acquisition [Member] Pending Acquisition [Member] Acqusition that is pending at the end of the current reporting period. Business Acquisition [Line Items] Business Acquisition [Line Items] Business acquisition, number completed during period Number of Businesses Acquired Schedule of Guarantor Obligations [Table] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Third Party Clearing Indemnifications [Member] Third Party Clearing Indemnifications [Member] Agreements in which clearing agents are indemnified against loss that could occur for non-performance by customers on transactions that are not sufficiently collateralized. Standby Letters of Credit [Member] Standby Letters of Credit [Member] Securities lending and other indemnifications [Member] Indemnification Agreement [Member] Loans and MHFS sold with recourse [Member] Obligation to Repurchase Receivables Sold [Member] Factoring guarantee [Member] Factoring Guarantee [Member] An agreement that requires the guarantor to purchase customer receivables should they default within a certain period of time. Other guarantees [Member] Guarantee Type, Other [Member] Position [Axis] Position [Axis] Position [Domain] Position [Domain] Written put options [Member] Short [Member] Non-investment grade [Member] Risk Level, High [Member] Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Carrying value Guarantor Obligations, Current Carrying Value Maximum exposure to loss, expires in one year or less Guarantor Obligations, Maximum Exposure, Expires in One Year or Less Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions, expiring in one year or less. Maximum exposure to loss, expires in one year through three years Guarantor Obligations, Maximum Exposure, Expires in One Year through Three Years Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions, expiring in one year through three years. Maximum exposure to loss, expires in three years through five years Guarantor Obligations, Maximum Exposure, Expires in Three Years through Five Years Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions, expiring in three years through five years. Maximum exposure to loss, expires after five years Guarantor Obligations, Maximum Exposure, Expires after Five Years Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions, expiring after five years. Maximum exposure to loss Guarantor Obligations, Maximum Exposure, Undiscounted Security Owned and Pledged as Collateral, Fair Value [Abstract] Trading assets and other Trading Securities Pledged as Collateral Investment securities Investment Securities Pledged as Collateral The fair value of available-for-sale securities and the amortized cost of held-to-maturity securities that serve as collateral for borrowings. Mortgages held for sale and loans Loans Pledged as Collateral Total pledged assets Financial Instruments Owned and Pledged as Collateral, Carrying Amount Carrying amounts of financial instrument that are pledged to counterparties as collateral for transactions where counterparty does not have the right to re-pledge such. Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value By Measurement Basis [Axis] Fair Value, Disclosure Item Amounts [Domain] Carrying value [Member] Reported Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Federal funds sold, securities purchased under resale agreements and other short-term investments Mortgages held for sale Loans held for sale Nonmarketable equity investments (cost method) Financial liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits Long-Term Debt Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock Compensation Plan [Member] Stock Compensation Plan [Member] Preferred Stock, No Voting Rights [Member] Preferred Stock, No Voting Rights [Member] Preferred stock with no voting rights. Preferred Stock, Voting Rights [Member] Preferred Stock, Voting Rights [Member] Preferred stock with voting rights Series G - 7.25% Class A Preferred Stock [Member] Series G Preferred Stock [Member] Series H - Floating Class A Preferred Stock [Member] Series H Preferred Stock [Member] Series U - 5.875% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member] Series U Preferred Stock [Member] Series U Preferred Stock [Member] Convertible Preferred Stock [Member] Convertible Preferred Stock [Member] Preferred Stock (Textual) [Abstract] Preferred Stock (Textual) [Abstract] Preferred Stock Textual Abstract. Preferred shares authorized Preferred Stock, Shares Authorized Par value Preferred Stock, Par or Stated Value Face amount or stated value of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value Number of votes per share Preferred Stock, Voting Rights, Number of Votes Per Share Preferred Stock, Voting Rights, Number of Votes Per Share Shares issued and outstanding Preferred Stock, Shares Issued Voting Rights Preferred Stock, Voting Rights Depositary shares issued and outstanding Depositary Shares Issued and Outstanding Depositary shares issued and outstanding, representing a 1/1000th interest in a share of recently issued preferred stock Percentage Interest in a share of issued preferred stock Percentage Interest in Share of Preferred Stock Percentage interest in a share of preferred stock Preferred stock, commitment to issue Preferred Stock, Commitment To Issue, Value Commitment to issue preferred stock that is authorized and designated Preferred stock, redemption price per share Preferred Stock, Redemption Price Per Share Additional paid-in capital included related to preferred stock Additional Paid in Capital, Preferred Stock Schedule of Guarantor Obligations Schedule of Guarantor Obligations [Table Text Block] Significant Components of Assets Pledged Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] Offsetting of Resale and Repurchase Agreements and Securities Borrowing and Lending Offsetting of Resale and Repurchase Agreements and Securities Borrowing and Lending [Table Text Block] Tabular disclosure of resale and repurchase agreements subject to master repurchase agreements (MRA) and securities borrowing and lending arrangements subject to master securities lending agreements (MSLA). Contractual Maturities of Repurchase Agreements and Securities Lending Agreements Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Table Text Block] Tabular disclosure of the nature and risks of short-term collateralized financing obtained through repurchase agreements, securities lending transactions and repurchase-to-maturity transactions, accounted for as secured borrowings. Loans Excluding Gnma And Similar Loans [Axis] Loans Excluding Gnma And Similar Loans [Axis] Loans excluding GNMA and Similar Loans. Loans excluding GNMA and Similar Loans [Domain] Loans excluding GNMA and Similar Loans [Domain] Loans excluding GNMA and Similar Loans. Total, not government insured/guaranteed [Member] Loans Excluding Government Insured or Guaranteed Loans [Member] Loans excluding government insured or guaranteed loans. Loans 90 days or more past due and still accruing: Past Due Financing Receivables Ninety Days Past Due and Still Accruing [Abstract] Past Due Financing Receivables 90 days Past Due and Still Accruing. Components of Mortgage Banking Noninterest Income [Abstract] Components of Mortgage Banking Noninterest Income [Abstract] Components of Mortgage Banking Noninterest Income Abstract. Servicing fees: Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets [Abstract] Contractually specified servicing fees Contractually Specified Servicing Fees, Amount Late charges Late Fee Income Generated by Servicing Financial Assets, Amount Ancillary fees Ancillary Fee Income Generated by Servicing Financial Assets, Amount Unreimbursed direct servicing costs Net servicing fees Servicing Fees Non Interest Income Servicing fees noninterest income. Changes in fair value of MSRs carried at fair value: Amortization Amortization of Mortgage Servicing Rights (MSRs) Net Derivative Gains (Losses) From Economic Hedges Related To Mortgage Servicing Activities Total servicing income, net Mortgage Servicing Noninterest Income Total mortgage servicing noninterest income. Net gains on mortgage loan origination/sales activities Gain Loss On Mortgage Loan Origination And Sales Activities Gain loss on mortgage loan origination and sales activities. Total mortgage banking noninterest income Fees And Commission Mortgage Banking The noninterest income derived from mortgage banking activities. Market-related valuation changes to MSRs, net of hedge results Servicing Asset At Fair Value Sum Of Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions And Net Derivative Gains Losses The sum of the net increase (decrease) in fair value included in income as a result of changes in the inputs, assumptions, or model used to calculate the fair value of servicing assets and net derivative gains (losses) from economic hedges. Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Changes in amortized MSRs Servicing Asset at Amortized Cost, Balance [Roll Forward] Balance, beginning of period Servicing Asset At Amortized Value Before Valuation Allowance Amortized carrying amount (balance) before valuation allowance as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. Purchases Servicing Asset at Amortized Value Purchases The value of new servicing assets acquired or created during the current period through purchases. Servicing from securitizations or asset transfers Servicing Asset at Amortized Value, Increase (Decrease) The increase (decrease) during the reporting period in the cumulative value of servicing rights. Increases are the result of new servicing rights that are created from transfers of financial assets, excluding purchases. Decreases are reductions due to MSRs that were elected to carry at fair value. Balance, end of period Fair value of amortized MSRs: Fair Value Of Amortized Mortgage Servicing Rights [Roll Forward] Fair value of amortized mortgage servicing rights abstract. Beginning of period Servicing Asset at Amortized Cost, Fair Value End of period Legal Actions Commitments and Contingencies Disclosure [Text Block] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Credit loss recognized, beginning of period Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Additions: Other Than Temporary Impairment, Credit Losses Recognized In Earnings, Additions [Abstract] Other Than Temporary Impairment, Credit Losses Recognized In Earnings, Additions [Abstract] For securities with previous credit impairments Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses Total additions Other Than Temporary Impairment Credit Losses Investments Portion Recognized In Earnings Net Other Than Temporary Impairment Credit Losses Investments Portion Recognized In Earnings Net. Reductions: Other Than Temporary Impairment, Credit Losses Recognized In Earnings, Reductions [Abstract] Other Than Temporary Impairment, Credit Losses Recognized In Earnings, Reductions [Abstract] For securities sold, matured, or intended/required to be sold Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold, Matured, Intended To Be Sold, Or Required To Be Sold This item represents reductions in the cumulative amount of other than temporary impairment due to credit loss that has been recognized in earnings due to securities derecognized under consolidation accounting guidance, or 2) reductions in the amount of cumulative losses recognized in earnings for other than temporary impairments (OTTI) for which a portion of the impairment had been recognized in other comprehensive income (a component of shareholders' equity) due to a change in status of the impaired security because of a change in the entity's intent to either sell the impaired security or it has become more likely than not that the entity will be required to sell the security before recovery of its cost basis. For recoveries of previous credit impairments Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Cash Flows Total reductions Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Other than Temporary Impairment, Credit Losses Recognized in Earnings, Total Reductions. Credit loss recognized, end of period 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 [Text Block] Detail of federal funds sold, securities purchased under resale agreements and other short-term investments. Available-for-sale securities: Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Contractual maturities, Total amount, available-for-sale Available-for-sale Securities, Debt Securities Weighted average yield contractual maturities, Total, available-for-sale Weighted Average Contractual Yield On Available For Sale Debt Securities Weighted average contractual yield on available for sale debt securities. Due within 1 year, Contractual maturities, available-for-sale Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Percentage of weighted average yield, Due within 1 year, available-for-sale Weighted Average Contractual Yield On Available For Sale Debt Securities Expected To Mature Within One Year Weighted average contractual yield on available for sale debt securities expected to mature within one year. Due in 1-5 years, Contractual maturities, available-for-sale Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Percentage of weighted average yield, Due in 1-5 years, available-for-sale Weighted Average Contractual Yield On Available For Sale Debt Securities Expected To Mature After One And Through Five Years Weighted average contractual yield on available for sale debt securities expected to mature after one and through five years. Due in 5-10 years, Contractual maturities, available-for-sale Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Percentage of weighted average yield, Due In 5-10 years, available-for-sale Weighted Average Contractual Yield On Available For Sale Debt Securities Expected To Mature After Five And Through Ten Years Weighted average contractual yield on available for sale debt securities expected to mature after five and through ten years. Due in 10 years or more, Contractual maturities, available-for-sale Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Percentage of weighted average yield, Due after 10 years, available-for-sale Weighted Average Contractual Yield On Available For Sale Debt Securities Expected To Mature After Ten Years Weighted average contractual yield on available for sale debt securities expected to mature after ten years. Held-to-maturity securities: Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] Amortized Cost Weighted average yield contractual maturities, Total, held-to-maturity, cost Weighted Average Contractual Yield On Held To Maturity Debt Securities Net Carrying Amount Weighted average contractual yield on held to maturity debt securities at cost. Due within 1 year, Contractual maturities, held-to-maturity, cost Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost Weighted Average Contractual Yield On Held To Maturity Debt Securities Expected To Mature Within One Year Net Carrying Amount Weighted average contractual yield on held to maturity debt securities at cost expected to mature within one year. Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost Weighted Average Contractual Yield On Held To Maturity Debt Securities Expected To Mature After One And Through Five Years Net Carrying Amount Weighted average contractual yield on held to maturity debt securities at cost expected to mature after one and through five years. Due in 5-10 years, Contractual maturities, held-to-maturity, cost Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost Weighted Average Contractual Yield On Held To Maturity Debt Securities Expected To Mature After Five And Through Ten Years Net Carrying Amount Weighted average contractual yield on held to maturity debt securities at cost expected to mature after five and through ten years. Due in 10 years or more, Contractual maturities, held-to-maturity, cost Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost Weighted Average Contractual Yield On Held To Maturity Debt Securities Expected To Mature After Ten Years Net Carrying Amount Weighted average contractual yield on held to maturity debt securities at cost expected to mature after ten years. Held-to-maturity securities, fair value: [Abstract] Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Contractual maturities, Total amount, held-to-maturity, fair value Due within 1 year, Contractual maturities, held-to-maturity, fair value Held-to-maturity Securities, Debt Maturities, Next Twelve Months, Fair Value Due in 1-5 years, Contractual maturities, held-to-maturity, fair value Held-to-maturity Securities, Debt Maturities, Year Two Through Five, Fair Value Due in 5-10 years, Contractual maturities, held-to-maturity, fair value Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value Due in 10 years or more, Contractual maturities, held-to-maturity, fair value Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite lived intangible assets [Member] Finite-Lived Intangible Assets [Member] MSRs [Member] Servicing Contracts [Member] Customer relationship and other intangibles [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract] Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract] Six months ended June 30, 2015 Amortization of Intangible Assets Estimate for the remainder of 2015 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Estimate for year ended December 31, Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2016 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Five Changes In Mortgage Servicing Rights Carried at Fair Value Schedule of Servicing Assets at Fair Value [Table Text Block] Changes In Amortized Mortgage Servicing Rights Servicing Asset at Amortized Cost [Table Text Block] Components of Managed Servicing Portfolio Components Of Managed Servicing Portfolio [Table Text Block] Components of managed servicing portfolio. Components of Mortgage Banking Noninterest Income Components Of Mortgage Banking Noninterest Income [Table Text Block] Components Of Mortgage Banking Noninterest Income. Liability for Mortgage Loan Repurchase Losses Liability For Mortgage Loan Repurchase Losses [Table Text Block] Liability for Mortgage Loan Repurchase Losses. Gains (losses) attributable to instrument-specific credit risk Fair Value, Option, Credit Risk, Gains (Losses) on Assets Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table] Trading securities and trading assets, excluding derivatives [Member] Trading Securities And Trading Assets, Excluding Derivatives [Member] Trading Securities And Trading Assets, Excluding Derivatives [Member] Trading assets (excluding derivatives) [Member] Mortgage servicing rights [Member] Mortgage servicing rights [Member] Mortgage Servicing Rights Member. Short sale liabilities [Member] Securities Sold, Not yet Purchased [Member] Other liabilities [Member] Other Liabilities [Member] Securities (Assets) [Member] Short sale liabilities [Member] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Assets: Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance, beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Net gains (losses) included in net income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Net gains (losses) included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Purchases, sales, issuances and settlements, net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements) Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Balance, end of period Net unrealized gains (losses) included in income related to assets and liabilities held at period end Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Assets and Liabilities: Fair Value Asset And Liability Measured On Recurring Basis Unobservable Input Reconciliation Calculation Roll Forward [Abstract] Balance, beginning of period Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Net gains (losses) included in net income Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Total net gains (losses) included in other comprehensive income Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) Purchases, sales, issuances and settlements, net Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases, Sales, Issues, Settlements Transfers into Level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3 Transfers out of Level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3 Balance, end of period Net unrealized gains (losses) included in income related to assets and liabilities held at period end Fair Value, Net Assets And (Liability) Measured On Recurring Basis, Change In Unrealized Gain (Loss) Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those net assets (liabilities) still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). Liabilities: Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance, beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Net gains (losses) included in net income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Net gains (losses) included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Purchases, sales, issuances and settlements, net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases, (Sales), Issuances, (Settlements) Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Balance, end of period Net unrealized gains (losses) included in income related to assets and liabilities held at period end Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss) Gross Carrying Value of Intangible Assets and Accumulated Amortization [Abstract] Gross Carrying Value Of Intangible Assets And Accumulated Amortization [Abstract] Gross Carrying Value Of Intangible Assets And Accumulated Amortization. Amortized intangible assets: Finite-Lived Intangible Assets, Net [Abstract] Gross carrying value Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Net carrying value Unamortized intangible assets: Indefinite-Lived Intangible Assets, Net [Abstract] Goodwill Trademark Indefinite-Lived Intangible Assets (Excluding Goodwill) Financial Instruments Owned and Pledged as Collateral [Table] Financial Instruments Owned and Pledged as Collateral [Table] Financial Instruments Owned and Pledged as Collateral by Type [Axis] Financial Instruments Owned and Pledged as Collateral by Type [Axis] Financial Instruments Owned and Pledged as Collateral, Type [Domain] Financial Instruments Owned and Pledged as Collateral, Type [Domain] Secured Borrowing transactions excluded [Member] Trading assets and other [Member] Investment securities [Member] Investment securities [Member] This item represents investments in debt and equity securities which are categorized as available for sale or held to maturity. Direct pay letters of credit (DPLCs) [Member] Direct Pay Letters of Credit [Member] Instruments which provide credit enhancements for certain bond issuances. Beneficiaries (bond trustees) may draw upon these instruments to make scheduled principal and interest payments, redeem all outstanding bonds because a default event has occurred, or for other reasons as permitted by the agreement. Third party clearing indemnifications [Member] Fed Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Member] Fed Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Member] Federal funds sold, securities purchased under short-term resale agreements (generally less than one year) and other short-term investments. Loans [Member] Loans and Finance Receivables [Member] Financial Instruments Owned and Pledged as Collateral [Line Items] Financial Instruments Owned and Pledged as Collateral [Line Items] Guarantees (Textuals) [Abstract] Guarantees Textuals [Abstract] Guarantees Textuals Abstract. Maximum exposure to loss Securities Loaned Securities Loaned Third-party clearing customer obligations Third-party Clearing Customer Obligations The amount of customer obligations outstanding at the balance sheet date due to third-party clearing agents for various securities transactions, including short sales, margin account settlements, and securities borrowings Collateral provided to third-party clearing agents Collateral Provided to Third-party Clearing Agents The amount of collateral customers have provided to third-party clearing agents to minimize the risk of loss on various securities transactions Loans repurchased Amount Of Loans Repurchased During Period Amount of loans repurchased during period. Total assets Securities owned and pledged as collateral available to be repledged, Fair Value Financial Instruments Owned and Pledged as Collateral, Amount Eligible to be Repledged by Counterparty Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, carrying value Financial Instruments Owned And Pledged As Collateral, Amount Not Eligible To Be Repledged By Counterparty, Carrying Value Financial Instruments Owned And Pledged As Collateral, Amount Not Eligible To Be Repledged By Counterparty, Carrying Value Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value Financial Instruments Owned and Pledged as Collateral, Amount Not Eligible to be Repledged by Counterparty Mortgages held for sale Pledged Financial Instruments, Not Separately Reported, Loans Receivable Pledged as Collateral Carrying value of delinquent loans eligible for repurchase Carrying Value Of Delinquent Loans Eligible For Repurchase Carrying value for certain delinquent loans, included in assets, that are eligible for repurchase primarily from GNMA loan securitizations. The carrying amounts are excluded because the loans eligible for repurchase do not represent interests in the VIEs. Net amounts in consolidated balance sheet Collateral received, fair value Securities Borrowed, Fair Value of Collateral Collateral received with the right to sell or repledge Fair Value of Securities Received as Collateral that Can be Resold or Repledged Collateral sold or repledged Fair Value of Securities Received as Collateral that Have Been Resold or Repledged Collateral pledged, fair value Securities Loaned, Fair Value of Collateral By delinquency status: Financing Receivables Acquired with Deteriorated Credit Quality by Days Past Due [Abstract] Financing Receivables Acquired with Deteriorated Credit Quality by Days Past Due. 30-59 DPD and still accruing 60-89 DPD and still accruing 90-119 DPD and still accruing 120-179 DPD and still accruing 180 or more DPD and still accruing Dividend Equalization Preferred Shares (DEP) [Member] Dividend Equalization Preferred [Member] Dividend Equalization Preferred Member. Series I - Floating Class A Preferred Stock [Member] Series I Preferred Stock [Member] Series I Preferred Stock Member. Series J - 8.00% Non-Cumulative Perpetual Class A Preferred Stock [Member] Series J [Member] Series J Preferred Stock Member. Series K - 7.98% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member] Series K [Member] Series K Preferred Stock Member. Series L - 7.50% Non-Cumulative Perpetual Convertible Class A Preferred Stock [Member] Series L [Member] Series L Preferred Stock Member. Series N - 5.20% Non-Cumulative Perpetual Class A Preferred Stock [Member] Series N [Member] Series N Preferred Stock Member. Series O - 5.125% Non-Cumulative Perpetual Class A Preferred Stock [Member] Series O [Member] Series O Preferred Stock Member. Series P - 5.25% Non-Cumulative Perpetual Class A Preferred Stock [Member] Series P Preferred Stock [Member] Series P Preferred Stock Member. Series Q - 5.85% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member] Series Q Preferred Stock [Member] Series Q Preferred Stock Member. Series R - 6.625% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member] Series R Preferred Stock [Member] Series R Preferred Stock Member. Series S - 5.900% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member] Series S Preferred Stock [Member] Series S Preferred Stock [Member] Series T - 6.000% Non-Cumulative Perpetual Class A Preferred Stock [Member] Series T Preferred Stock [Member] Series T Preferred Stock [Member] Detail of Preferred Stock [Abstract] Detail of Preferred Stock [Abstract] Detail Of Preferred Stock Abstract. Preferred Stock, Dividend rate (percent) Preferred Stock, Dividend Rate, Percentage Preferred Stock, Liquidation preference per share (in dollars per share) Preferred Stock, Liquidation Preference Per Share Preferred Stock, Shares authorized and designated Preferred Stock Shares Authorized And Designated The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws that have also been designated. ESOP, Liquidation preference per share Employee Stock Ownership Plan Preferred Stock Liquidation Preference Per Share The per share liquidation preference (or restrictions) of nonredeemable Employee Stock Ownership (ESOP) preferred stock (or ESOP preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. ESOP, Shares authorized and designated Employee Stock Ownership Plan Preferred Stock Shares Authorized and Designated The maximum number of nonredeemable Employee Stock Ownership (ESOP) preferred shares (or ESOP preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws that have also been designated. Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Shares issued and outstanding Carrying value Preferred Stock, Value, Outstanding Discount Preferred Stock, Discount on Shares ESOP Shares issued and outstanding ESOP Par value Employee Stock Ownership Plan Preferred Stock Par value Face amount or stated value of nonredeemable Employee Stock Ownership Plan (ESOP) preferred stock (or ESOP preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value ESOP Carrying value ESOP Discount Employee Stock Ownership Plan Preferred Stock Discount on Shares Discount on Employee Stock Ownership Plan (ESOP) preferred shares, or any unamortized balance thereof, shown separately as a deduction from the applicable account(s) as circumstances require. By updated FICO: Financing Receivables by FICO Excluding Acquired with Deteriorated Credit Quality [Abstract] Financing Receivables by FICO, Excluding Acquired with Deteriorated Credit Quality. No FICO available Financing Receivable Recorded Investment FICO None Or Unknown Financing receivables with no FICO score or unknown FICO score. Schedule of Goodwill [Table] Schedule of Goodwill [Table] Segments [Axis] Community Banking [Member] Wholesale Banking [Member] Wealth, Brokerage and Retirement [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Goodwill, Beginning Balance Goodwill, Written off Related to Sale of Business Unit Goodwill, Written off Related to Sale of Business Unit Goodwill, Acquired During Period Goodwill, Acquired During Period Goodwill, Other Changes Goodwill, Other Changes Goodwill, Ending Balance Regulatory and Agency Capital Requirements Regulatory Capital Requirements under Banking Regulations [Text Block] Schedule of Other Comprehensive Income [Table] Schedule of Other Comprehensive Income [Table] Interest income [Member] Interest Income [Member] Gain(Loss) on investments [Member] GainLossOnInvestmentsMember1 [Member] Primary financial statement caption encompassing gain (loss) on investments. Interest expense on long-term debt [Member] Interest Expense [Member] Noninterest income [Member] Noninterest Income [Member] Primary financial statement caption in which reported facts about noninterest income have been included. Components of Other Comprehensive Income [Line Items] Components of Other Comprehensive Income [Line Items] Components of other comprehensive income and related tax effects [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Net unrealized gains (losses) arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Net unrealized gains arising during the period, Tax effect Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Net unrealized gains arising during the period, Net of tax Reclassification of net gains to net income, Before tax Other Comprehensive Income Loss Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income Before Tax Pre tax reclassification adjustment for gains or losses realized upon the sale or write-down of securities during the period. Reclassification of net gains to net income, Tax effect Other Comprehensive Income Loss Reclassification Adjustment For Sale Or Write Down Of Securities Included In Net Income, Tax Tax effect on the reclassification adjustment for gains or losses realized upon the sale or write-down of securities. Reclassification of net gains to net income, Net of tax Net change, Before tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax Net change, Tax effect Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Net unrealized gains (losses) arising during the period Net unrealized gains arising during the period, Tax effect Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Net unrealized gains arising during the period, Net of tax Reclassification of net (gains) losses on cash flow hedges to net income, Before tax Reclassification of net (gains) losses on cash flow hedges to net income, Tax effect Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax Reclassification of net (gains) losses on cash flow hedges to net income, Net of tax Net change, Before tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax Net change, Tax effect Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Net actuarial losses arising during the period Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax Net actuarial losses arising during the period, Tax effect Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax Net actuarial losses arising during the period, Net of tax Amortization of net actuarial loss, Before tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax Amortization of net actuarial loss, Tax effect Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax Amortization of net actuarial loss, Net of tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax Settlements and other, Before tax Other Comprehensive (Income) Loss, Other Reclassification Adjustments from AOCI, Pension and Other Postretirement Benefit Plans, before Tax Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss related to net period benefit cost (credit), excluding amortization of net actuarial loss, for pension and other postretirement defined benefit plans. Settlements and other, Tax effect Other Comprehensive (Income) Loss, Other Reclassification Adjustments from AOCI, Pension and Other Postretirement Benefit Plans, Tax Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, excluding amortization of net actuarial loss. Settlements and other, Net of tax Other Comprehensive (Income) Loss, Other Reclassification Adjustments from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax Amount after tax of reclassification adjustment from accumulated other comprehensive (income) loss related to net period benefit cost (credit), excluding amortization of net actuarial loss, for pension and other postretirement defined benefit plans. Reclassification of amounts to net periodic benefit costs, Before tax Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Amortization Of Net Prior Service Cost Credit And Finalization Of Valuation Recognized In Net Periodic Benefit Cost Before Tax The amortization of net actuarial gains or losses and net prior service cost or credit previously recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period. Also includes pre-tax gain or loss adjustment to other comprehensive income resulting from the settlement or curtailment of the entity's defined benefit pension and other postretirement plans. Reclassification of amounts to net periodic benefit costs, Tax effect Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Amortization Of Net Prior Service Cost Credit And Finalization Of Valuation Recognized In Net Periodic Benefit Cost,Tax Amount of tax expense (benefit) of the amortization of net actuarial gains or losses and net prior service cost or credit previously recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period. Also includes tax on gain or loss adjustment to other comprehensive income resulting from the settlement or curtailment of the entity's defined benefit pension and other postretirement plans. Reclassification of amounts to net periodic benefit costs, Net of tax Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Amortization Of Net Prior Service Cost Credit And Finalization Of Valuation Recognized In Net Periodic Benefit Cost, Net of Tax Amount after tax of the amortization of net actuarial gains or losses and net prior service cost or credit previously recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period. Also includes after tax gain or loss adjustment to other comprehensive income resulting from the settlement or curtailment of the entity's defined benefit pension and other postretirement plans. Net change, Before tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax Net change, Tax effect Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax Net unrealized losses arising during the period, Before tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Net unrealized losses arising during the period, Tax effect Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax Net unrealized losses arising during the period, Net of tax Reclassification of net losses to net income, Before tax Other Comprehensive Income, Foreign Currency Transaction And Translation Reclassification Adjustment, Net Losses To Net Income, Before Tax Other Comprehensive Income (Loss) Foreign Currency Transaction, reclassification of net losses to net income, before tax. Reclassification of net losses to net income, Tax effect Other Comprehensive Income, Foreign Currency Transaction And Translation Reclassification Adjustment, Net Losses To Net Income, Tax Amount of tax, Other Comprehensive Income (Loss) Foreign Currency Transaction, reclassification of net losses to net income. Reclassification of net losses to net income, Net of tax Net change, Before tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Net change, Tax effect Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Other comprehensive income (loss), before tax Other Comprehensive Income (Loss), before Tax Other Comprehensive Income, Tax effect Other Comprehensive Income (Loss), Tax Wells Fargo other comprehensive income (loss), net of tax Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Table] Fair Value Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels by Asset Type [Axis] Fair Value Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels by Asset Type [Axis] Fair Value Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels by Asset Type [Domain] Fair Value Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels by Asset Type [Domain] Net derivative assets and liabilities [Member] Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items] Fair Value Level, Transfer Out, Amount Except For Fair Value Level, Transfer Out, Amount Except For Item not included as part of transfers, but is included in the Level 3 rollfoward. Transfer In Fair Value Level, Transfer In, Amount Transfers into a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred. Transfer Out Fair Value Level, Transfer Out, Amount Transfers out of a fair value level during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred. Total Fair Value Level, Transfer Amount, Total Total transfers between fair value levels during the period. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred. Statement of Comprehensive Income [Abstract] Other comprehensive income (loss), before tax: Other Comprehensive Income (Loss), before Tax [Abstract] Investment securities: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, [Abstract] Reclassification of net gains to net income Derivatives and hedging activities: Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax [Abstract] Reclassification of net gains on cash flow hedges to net income Defined benefit plans adjustments: Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, [Abstract] Amortization of net actuarial loss, settlements and other to net income Foreign currency translation adjustments: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax [Abstract] Net unrealized gains (losses) arising during the period Reclassification of net losses to net income Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Income tax (expense) benefit related to other comprehensive income Less: Other comprehensive income (loss) from noncontrolling interests Wells Fargo comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) from noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Table] Schedule of Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Table] Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items] Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items] Prepayment speed Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Prepayment Speed Discount rate Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Discount Rate Cost to service ($ per loan) Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Cost to Service The cost to service dollar amount per loan which is used to value residual cash flows generated by financial assets of the securitization, asset-backed financing arrangement, or similar transfer. This is used as a key assumption in measuring the fair value of assets or liabilities that relate to a transferor's assets obtained or liabilities incurred, if any, at the time of securitization, asset-backed financing, or similar transfer. Commercial Lease Financing Receivable [Member] Commercial Lease Financing Receivable [Member] Commercial Lease Financing Receivable [Member] Total unfunded credit commitments Loans and Leases Receivable, Commitment to Lend Reflects the unfunded portion of contractual agreements to lend funds to borrowers. Economic Hedges [Member] Economic Hedges [Member] Economic Hedges [Member] Interest Rate Contracts, Mortgage Banking [ Member] Interest Rate Contracts, Mortgage Banking [ Member] Derivative instruments whose primary underlying risk is tied to interest rate contracts in Mortgage Banking. Interest Rate Contracts, Other Interest Rate Contracts, Other Derivative instruments whose primary underlying risk is tied to interest rate contracts other than Mortgage Banking. Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract] Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract] Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments. Net gains (losses) recognized related to derivatives not designated as hedging instruments Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Offsetting [Abstract] Offsetting [Abstract] Derivative Assets Offsetting Derivative Assets [Abstract] Gross amounts recognized Gross amounts offset in consolidated balance sheet Gross amounts not offset in consolidated balance sheet Derivative Asset, Fair Value of Collateral Net amounts Derivative Asset, Net Exposure Aggregate amount of our net exposure to each counterparty after considering the balance sheet and disclosure-only netting adjustments for derivative assets. Percent exchanged in the over the counter market Derivative Assets Exchanged In The Over The Counter Market, Percent Percentage of derivative assets exchanged in the over the counter market Derivative Liabilities Offsetting Derivative Liabilities [Abstract] Gross amounts recognized Gross amounts offset in consolidated balance sheet Gross amounts not offset in consolidated balance sheet Derivative Liability, Fair Value of Collateral Net amounts Derivative Liability, Net Exposure Aggregate amount of our net exposure to each counterparty after considering the balance sheet and disclosure-only netting adjustments for derivative liabilities. Percent traded in over the counter market Derivative Liabilities Exchanged In The Over The Counter Market, Percent Percentage of derivative liabilities exchanged in the over the counter market Operating Segments Segment Reporting Disclosure [Text Block] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Net Purchases Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases Sales Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales Issuances Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Issues Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Net Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Net Mortgage Banking Activities Mortgage Banking Activities [Text Block] Disclosures on mortgage banking activities that consist of residential and commercial originations and servicing. Fair Value Inputs, Assets and Liabilities, Quantitative Information [Table] Fair Value Inputs, Assets and Liabilities, Quantitative Information [Table] Recurring [Member] Government, healthcare and other revenue bonds [Member] Government, healthcare and other revenue bonds [Member] Government, healthcare and other revenue bonds [Member] Auction rate and other municipal bonds [Member] Auction Rate Securities [Member] Diversified payment rights [Member] Diversified Payment Rights [Member] Securities backed by specified sources of current and future receivables generated from foreign originators. Other commercial and consumer [Member] Other Commercial and Consumer [Member] Other Commercial and Consumer [Member] Other assets: nonmarketable equity investments [Member] Other Assets: Nonmarketable Equity Investments [Member] Other Assets: Nonmarketable Equity Investments Derivative loan commitments [Member] Derivative Loan Commitments [Member] Derivative instrument whose primary underlying risk is tied to a lender's commitment to originate loans. Weighted Average [Member] Weighted Average [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Discounted cash flow [Member] Discounted cash flow [Member] Discounted cash flow valuation techniques generally consist of developing an estimate of future cash flows that are expected to occur over the life of an instrument and then discounting those cash flows at a rate of return that results in the fair value amount. Market comparable pricing [Member] Market Comparable Pricing [Member] Market comparable pricing valuation techniques are used to determine the fair value of certain instruments by incorporating known inputs such as recent transaction prices, pending transactions, or prices of other similar investments which require significant adjustment to reflect differences in instrument characteristics. Option model [Member] Option model [Member] Option model valuation techniques are generally used for instruments in which the holder has a contingent right or obligation based on the occurrence of a future event, such as the price of a referenced asset going above or below a predetermined strike price. Option models estimate the likelihood of the specified event occurring by incorporating assumptions such as volatility estimates, price of the underlying instrument and expected rate of return. Vendor priced [Member] Vendor priced [Member] Prices obtained from third party pricing vendors or brokers that are used to record the fair value of the asset or liability, of which the related valuation technique and significant unobservable inputs are not provided. Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] Financial and Nonfinancial Liabilities, Fair Value Disclosure Net derivative assets and liabilities Derivative Asset (Liability), Fair Value, Net Fair value of net derivative assets and liabilities Other assets: nonmarketable equity investments Other Assets Nonmarketable Equity Investments, Fair Value Disclosure Nonmarketable equity investments recorded in other assets that are measured at fair value as of the balance sheet date Total insignificant level 3 assets, net of liabilities Insignificant Level Three Assets, Fair Value Disclosure, Net of Liabilities Assets, net of liabilities, measured using an internal model that are considered, both individually and in the aggregate, insignificant relative to the overall Level 3 assets and liabilities. Total level 3 assets, net of liabilities Assets, Fair Value Disclosure, Net of Liabilities This element represents the aggregate of the assets, net of liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. Fair Value Inputs [Abstract] Fair Value Inputs [Abstract] Discount rate Fair Value Inputs, Discount Rate Prepayment rate Fair Value Inputs, Prepayment Rate Loss severity Fair Value Inputs, Loss Severity Comparability adjustment Default rate Fair Value Inputs, Probability of Default Volatility factor Fair Value Assumptions, Expected Volatility Rate Weighted average life Fair Value Assumptions, Weighted Average Life The weighted average number of years an investment is expected to remain outstanding, based on its expected cash flows reflecting the estimated date the issuer will call or extend the maturity of the instrument or otherwise reflecting an estimate of the timing of an instruments' cash flows whose timing is not contractually fixed. In 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Fall-out factor Fair Value Assumptions, Fall-Out Factor The expected percentage of loans associated with our interest rate lock commitment portfolio that are likely not funding. Initial-value servicing (in bps) Fair Value Assumptions, Initial-Value Servicing The expected value of selling and servicing a portfolio of loans in the future. Correlation factor Fair Value Assumptions, Correlation Factor The likelihood of one instrument changing in price relative to another based on an established relationship expressed as a percentage of relative change in price over a period over time. Credit spread Fair Value Assumptions, Credit Spread The portion of the interest rate in excess of a benchmark interest rate, such as LIBOR or U.S. Treasury rates, that when applied to an investment captures changes in the obligor's creditworthiness. Utilization rate Fair Value Inputs, Utilization Rate The estimated rate in which incremental portions of existing reverse mortgage credit lines are expected to be drawn by borrowers, expressed as an annualized rate. Conversion factor Fair Value Inputs, Conversion Factor The expected rate in which a particular instrument may be exchanged for another instrument upon settlement, expressed as a percentage change from a specified rate Aggregate Fair Value Of Derivative Loan Commitments Net Asset (Liability) Recorded investment of defaults Financing Receivable, Modifications, Subsequent Default, Recorded Investment Interest income Interest and Dividend Income, Operating [Abstract] Trading assets Interest and Dividend Income, Securities, Operating, Trading or Measured at Fair Value Investment securities Interest and Dividend Income, Securities, Operating Mortgages held for sale Interest and Fee Income, Loans Held-for-sale, Mortgages Loans held for sale Interest and Fee Income, Nonmortgage Loans and Leases Held-for-sale Loans Interest and Fee Income, Loans and Leases Held-in-portfolio Other interest income Other Interest and Dividend Income Total interest income Interest and Dividend Income, Operating Interest expense Interest Expense [Abstract] Deposits Interest Expense, Deposits Short-term borrowings Interest Expense, Short-term Borrowings Long-term debt Interest Expense, Long-term Debt Other interest expense Interest Expense, Other Total interest expense Interest Expense Net interest income Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Service charges on deposit accounts Fees And Commissions Depositors 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. Trust and investment fees Fees and Commissions, Fiduciary and Trust Activities Card fees Fees and Commissions, Credit and Debit Cards Other fees Fees and Commissions, Other Mortgage banking Insurance Insurance Services Revenue Net gains from trading activities Trading Gain (Loss) Net gains on debt securities Gain (Loss) on Sale of Debt Investments Net gains 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. Lease income Operating Leases, Income Statement, Lease Revenue Other Noninterest Income, Other Operating Income Total noninterest income Noninterest expense Noninterest Expense [Abstract] Salaries Salaries, Wages and Officers' Compensation 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. Employee benefits Other Labor-related Expenses Equipment Equipment Expense Net occupancy Occupancy, Net Core deposit and other intangibles FDIC and other deposit assessments Federal Deposit Insurance Corporation Premium Expense Other Other Noninterest Expense Total noninterest expense Income tax expense Per share information Earnings per common share (in dollars per share) Diluted earnings per common share (in dollars per share) Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Diluted average common shares outstanding (in shares) Credit Derivatives Contract Type [Axis] Credit Derivatives Contract Type [Axis] Credit Derivatives Contract Type [Domain] Credit Derivatives Contract Type [Domain] Corporate bonds [Member] Corporate Bond Securities [Member] Structured products [Member] Structured products [Member] Structured products Member. Credit default swap [Member] Credit Default Swap [Member] Other Credit Derivatives [Member] Other Credit Derivatives [Member] Non-investment grade [Member] External Credit Rating, Non Investment Grade [Member] Details of Sold and Purchased Credit Derivatives [Abstract] Details of Sold and Purchased Credit Derivatives [Abstract] Details of Sold and Purchased Credit Derivatives Abstract. Fair value liability Credit Risk Derivative Liabilities, at Fair Value Notional amount Protection sold Credit Derivative, Maximum Exposure, Undiscounted Notional amount Protection purchased with identical underlyings Credit Derivatives Notional Amount Purchased Credit Protection Describes, in the context of the estimate of potential recoveries, any purchased credit protection with identical underlying(s). Notional Net protection sold Credit Derivative Notional Amount Net Protection Sold And Purchased Credit Derivative, Notional Amount, Net protection sold and purchased. Notional Other protection purchased Credit derivative, Notional Amount, purchased credit protection other Credit derivative, Notional Amount, purchased credit protection other. Derivative range of maturity dates Derivative, Maturity Date Asset-backed Securities, Securitized Loans and Receivables [Member] Asset-backed Securities Collateralized by Dealer Floorplan Loans [Member] Available-for-sale securities: Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract] Amortized Cost Gross unrealized gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Fair value Held-to-maturity securities: Held-to-maturity Securities [Abstract] Gross unrealized gains Held-to-maturity Securities, Accumulated Unrecognized Holding Gain Gross unrealized losses Held-to-maturity Securities, Accumulated Unrecognized Holding Loss Fair value Total investment securities: Marketable Securities [Abstract] Amortized Cost Marketable Securities, Amortized Cost Basis This item represents the cost of debt and equity securities, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Gross unrealized gains Marketable Securities, Gross Unrealized Gain 2 Amount at a point in time of unrealized gain before deducting unrealized losses on investments in marketable securities. Gross unrealized losses Fair value Fair Value, Measurements From Brokers or Third Party Pricing Services, Assets and Liabilities [Table] Fair Value, Measurements From Brokers or Third Party Pricing Services, Assets and Liabilities [Table] Fair Value Measurements From Brokers Or Third Party Pricing Services Assets And Liabilities [Axis] Fair Value Measurements From Brokers Or Third Party Pricing Services Assets And Liabilities [Axis] Fair Value Measurements From Brokers or Third Party Pricing Services [Domain] Fair Value Measurements From Brokers or Third Party Pricing Services [Domain] Fair Value Measurements From Brokers Or Third Party Pricing Services Domain Brokers [Member] Fair Value Measurements From Brokers [Member] Fair Value Measurements From Brokers Member. Third party pricing services [Member] Fair Value Measurements From Third Party Pricing Services [Member] Fair Value Measurements From Third Party Pricing Services Member. Derivatives (liabilities) Total secured borrowings [Member] Secured Borrowings [Member] Total secured borrowings. Consolidated VIEs [Member] Total secured borrowings and consolidated VIEs [Member] Secured Borrowings And Variable Interest Entity [Member] Total secured borrowings and variable interest entity. Municipal tender option bond securitizations [Member] Municipal tender option bond securitizations [Member] Municipal tender option bond securitizations. Commercial real estate loans [Member] Commercial Real Estate Loans [Member] Class of financing receivables related to commercial real estate financing receivables. Residential mortgage securitizations [Member] Nonconforming residential mortgage loan securitizations [Member] Nonconforming Residential Mortgage Backed Securities [Member] Nonconforming Residential Mortgage Backed Securities Member. Structured asset finance [Member] Structured Asset Finance [Member] Structured Asset Finance. Investment funds [Member] Total VIE assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Assets Liabilities Noncontrolling interests VIEs That We Consolidate Recourse [Member] VIEs That We Consolidate Recourse [Member] VIEs that we consolidate with recourse to the general credit of Wells Fargo Equity Interests [Member] Equity Interests [Member] Equity Interests Member. Other Investments [Member] Other Investments [Member] Trust Preferred Securities [Member] Trust Preferred Securities [Member] Trust Preferred Securities [Member] Commercial Mortgage [Member] Loans [Member] Loans [Member] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] FNMA, FHLMC and GNMA [Member] Securitizations and Variable Interest Entities (Textual) [Abstract] Securitizations and Variable Interest Entities Textual [Abstract] Securitizations and Variable Interest Entities Textual Abstract. Amount Paid To Third Party Investors To Settle Repurchase Liabilities Amount Paid To Third Party Investors To Settle Repurchase Liabilities Amount paid to third-party investors to settle repurchase liabilities on pools of loans. Amount Paid To Repurchase Loans From Securitization Vehicles Amount Paid To Repurchase Loans From Securitization Vehicles Amount paid to GNMA early pool buy-out loans due to exercise of repurchase option. Liabilities Carrying value asset (liability) Carrying value of delinquent loans eligible for repurchase Unpaid Principal Balance Of Mortgage Loans Eligible For Repurchase Unpaid principal balance of mortgage loans eligible for repurchase from unconsolidated residential mortgage securitization vehicles, principally guaranteed by GNMA, included in assets. Principal amount that would be payable to securitization vehicles Principal Amount That Would Be Payable To Securitization Vehicles Principal amount, included in liabilities, that would be payable to the securitization vehicles if the Company were to exercise the repurchase option. Percentage of underlying collateral rated as investment grade Percentage Of Underlying Collateral Rated As Investment Grade Percentage of underlying collateral rated as investment grade Securities Available for Sale Portfolio of ARS issued by VIEs Auction Rate Securities Issued By Variable Interest Entities Auction rate securities (debt instruments and preferred equities) issued by variable interest entities. Carrying value - equity Carrying Amount Of Equity Related To Unconsolidated Variable Interest Entities Carrying amount of equity related to unconsolidated variable interest entities through the issuance of trust preferred securities. Net gains from sale of assets securitizations Gain (Loss) on Securitization of Financial Assets Amount of mortgages transferred in securitization and whole loan sale transactions Financial Assets Transferred In Securitizations And Whole Loan Sales Carrying value of assets transferred in a securitization or asset-backing financing arrangement or a whole loan sale, accounted for as a sale. Amount of servicing asset at fair value Servicing Asset At Fair Value, Amount, Measurement With Unobservable Inputs, Additions The increase during the reporting period in the fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs, related to servicing arrangements, relating to loan securitizations, that are measured using Level 3 measurments. Securities, at fair value Securities, Amount, Measurement With Observable Inputs, Additions The increase during the reporting period of the amount of investment in debt and equity securities categorized either available-for-sale or trading, relating to loan securitizations, that are measured using Level 2 measurements. Amount of liability for repurchase reserves at fair value Liability for Mortgage Repurchase Reserves, Fair Value, Measurement with Unobservable Inputs, Additions The increase during the reporting period in liability for mortgage repurchase reserves that are measured using Level 3 measurements. This increase is related to new servicing rights that are created when mortgages are sold or transferred. Percentage of adverse change in interest rate Sensitivity Analysis Of Fair Value, Transferor's Interests In Transferred Financial Assets, Percentage Of Adverse Change In Interest Rate Sensitivity Analysis Of Fair Value, Transferor's Interests In Transferred Financial Assets, Percentage Of Adverse Change In Interest Rate Decrease in fair value from 25% adverse change in interest rate Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of Other than 10 or 20 Percent Adverse Change in Interest Rate The hypothetical financial impact of a specified adverse percentage change in interest rate on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Loans Receivable Loans Receivable, Net Foreclosed assets Repossessed Assets Delinquent loans Private placement debt financing Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Assets pledged to collateralize the borrowings of variable interest entity Variable Interest Entity Asset Owned And Pledged As Collateral The carrying amount of assets pledged to collateralize the borrowings of consolidated variable interest entity. Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income before noncontrolling interests 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] Changes in fair value of MSRs, MHFS and LHFS carried at fair value Unrealized Gain (Loss) on Mortgage Servicing Rights, Mortgages Held for Sale and Loans Held for Sale The aggregate increase (decrease) in the market value of Mortgage Servicing Rights, Mortgages Held for Sale and Loans Held for Sale whose gains (losses) are included in earnings. Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Other net gains Other Noncash Income (Expense) Stock-based compensation Share-based Compensation and Preferred Stock Released By Employee Stock Option Plan The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Also includes the value of preferred stock released by the employee stock ownership plan during the period. Excess tax benefits related to stock incentive compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Originations of MHFS Payments for Origination of Mortgage Loans Held-for-sale 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. Proceeds from sales of and principal collected on LHFS Proceeds From Sales of and Principal Collected on Loans Held For Sale The cash inflow resulting from the sale of and principal collected on loans classified as held-for-sale, excluding proceeds from loans sold through mortgage securitization. Purchases of LHFS Payments to Purchase Other Loans Held-for-sale Net change in: Increase (Decrease) in Operating Capital [Abstract] Trading assets Increase Decrease in Trading Assets The net change during the reporting period in the carrying value of trading assets. Deferred income taxes Increase (Decrease) in Deferred Income Taxes Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Accrued interest payable Increase (Decrease) in Interest Payable, Net Other assets Increase (Decrease) in Other Operating Assets Other accrued expenses and liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Net cash provided (used) by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net change in: Net Change In Investing Activities [Abstract] Net Change In Investing Activities [Abstract] Federal funds sold, securities purchased under resale agreements and other short-term investments Net change in Federal funds sold securities purchased under resale agreements and other short term investments Increase (decrease) in Federal funds sold securities purchased under resale agreements and other short term investments. Available-for-sale securities: Payments for (Proceeds from) Investments [Abstract] Sales proceeds Proceeds from Sale of Available-for-sale Securities Prepayments and maturities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Purchases Payments to Acquire Available-for-sale Securities Held-to-maturity securities: Payments to Acquire Investments [Abstract] Paydowns and maturities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Purchases Payments to Acquire Held-to-maturity Securities Nonmarketable equity investments: Payments for (Proceeds from) Nonmarketable Equity Investments [Abstract] Sales proceeds Proceeds from Sale of Nonmarketable Equity Investments The cash inflow associated with the sale of nonmarketable equity investments, consisting of both cost method and equity method investments. Purchases Payments to Acquire Nonmarketable Equity Investments The cash outflow to acquire nonmarketable equity investments, consisting of both cost method and equity method investments. Loans: Payments for (Proceeds from) Loans and Leases [Abstract] Loans originated by banking subsidiaries, net of principal collected Payments for loans originated by banking subsidiaries, net of proceeds from collections The cash outflow for loans originated by banking subsidiaries, net of the cash inflow for principal collected. Proceeds from sales (including participations) of loans held for investment Proceeds from Sale of Loans and Leases Held-for-investment Purchases (including participations) of loans Payments to Acquire Loans and Leases Held-for-investment Principal collected on nonbank entities’ loans Principal collected on nonbank entities' loans The cash inflow from principal collected on nonbank entities' loans. Loans originated by nonbank entities Loans originated by nonbank entities The cash outflow for loans originated by nonbank entities. Payments to Acquire Businesses, Net of Cash Acquired Payments to Acquire Businesses, Net of Cash Acquired Proceeds from sales of foreclosed assets and short sales Proceeds from Sale of Foreclosed Assets And Short Sales Proceeds from sales of foreclosed assets and short sales. Net cash from purchases and sales of MSRs Payments for (Proceeds from) Mortgage Servicing Rights Other, net Payments for (Proceeds from) Other Investing Activities Net cash used by investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net change in: Net Change In Financing Activities [Abstract] Net Change In Financing Activities [Abstract] Deposits Increase (Decrease) in Deposits Short-term borrowings Proceeds from (Repayments of) Short-term Debt Long-term debt: Proceeds from (Repayments of) Long-term Debt and Capital Securities [Abstract] Proceeds from issuance Proceeds from Issuance of Long-term Debt and Capital Securities, Net Repayment Repayments of Long-term Debt Preferred stock: Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants [Abstract] Proceeds from issuance Proceeds from Issuance of Preferred Stock and Preference Stock Cash dividends paid Payments of Ordinary Dividends, Preferred Stock and Preference Stock Common stock: Common Stock [Abstract] Common Stock. Proceeds from issuance Proceeds from Issuance of Common Stock Repurchased Payments for Repurchase of Common Stock Cash dividends paid Payments of Ordinary Dividends, Common Stock Payments for Repurchase of Warrants Payments for Repurchase of Warrants Excess tax benefits related to stock incentive compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Net change in noncontrolling interests Proceeds from (Payments to) Noncontrolling Interests Other, net Proceeds from (Payments for) Other Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net change in cash and due from banks Cash and Cash Equivalents, Period Increase (Decrease) Cash and due from banks at beginning of period Cash and due from banks at end of period Supplemental cash flow disclosures: Cash paid for interest Interest Paid, Net Cash paid for income taxes Income Taxes Paid Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Other Assets: Nonmarketable Equity Investments [Member] Other assets: private equity fund investments Other Assets Private Equity Fund Investments, Fair Value Disclosure Private equity fund investments recorded in other assets that are measured at fair value as of the balance sheet date. Insignificant level 3 assets Insignificant Level Three Assets, Fair Value Disclosure Assets measured using an internal model that are considered, both individually and in the aggregate, insignificant relative to the overall Level 3 nonrecurring measurements. Total Other Assets Nonmarketable Equity Investments, Fair Value Disclosure Available-for-sale securities: Securities Available For Sale In Unrealized Loss Position By Investment Grade (Abstract) Securities Available for Sale in an Unrealized Loss Position by Investment Grade. Held-to-maturity securities: Held-to-Maturity Securities In Unrealized Loss Position By Investment Grade [Abstract] Total investment securities: Marketable Securities In Unrealized Loss Position By Investment Grade [Abstract] Assets and Liabilities associated with Variable Interest entities Assets And Liabilities Associated With Variable Interest Entities [Table Text Block] Assets and Liabilities associated with Variable Interest entities. Transactions with Variable Interest Entity Transactions With Unconsolidated Variable Interest Entities [Table Text Block] Transactions with Unconsolidated Variable Interest Entities. Cash flows with securitization trusts Cash Flows With Securitization Trusts [Table Text Block] Cash flows with securitization trusts. Key Assumptions To Measure Mortgage Servicing Assets At Date Of Securitization Schedule of Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Table Text Block] Key Assumptions To Measure Mortgage Servicing Rights And Other Interests Held At Balance Sheet Date Schedule of Assumptions for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Table Text Block] Principal Balances - Off-Balance Sheet Securitized Loans Principal Balances Off Balance Sheet Securitized Loans [Table Text Block] Principal Balances - Off-Balance Sheet Securitized Loans. Transactions With Consolidated Variable Interest Entities Transactions With Consolidated Variable Interest Entities [Table Text Block] Transactions With Consolidated Variable Interest Entities. Consolidated Statement of Changes in Equity (Textuals) [Abstract]