2.4.0.8200100 - Disclosure - Summary of Significant Accounting Policies (Policies)truefalsefalse1false falsefalseFROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:001true 3wfc_SignificantAccountingPoliciesLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false 4wfc_NatureOfOperationsPolicyPolicyTextBlockwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">Wells&#160;Fargo &amp; Company is a diversified financial services company. We provide banking, insurance, trust and investments, mortgage banking, investment banking, retail banking, brokerage, and consumer and commercial finance through banking stores, the internet and other distribution channels to consumers, businesses and institutions in all 50 states, the District of Columbia, and in </font><font style="font-family:Georgia;font-size:9pt;">foreign</font><font style="font-family:Georgia;font-size:9pt;"> countries. When we refer to &#8220;Wells&#160;Fargo,&#8221; &#8220;the Company,&#8221; &#8220;we,&#8221; &#8220;our&#8221; or &#8220;us,&#8221; we mean Wells&#160;Fargo &amp; Company and Subsidiaries (consolidated). Wells&#160;Fargo &amp; Company (the Parent) is a financial holding company and a bank holding company. We also hold a majority interest in a real estate investment trust, which has publicly traded preferred stock outstanding.</font></p><p style='margin-top:0pt; margin-bottom:0pt'>&#160;</p>falsefalsefalsenonnum:textBlockItemTypenaThe 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.No definition available.false03false 4us-gaap_UseOfEstimatesus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">Our accounting and reporting policies conform with U.S. generally accepted accounting principles (GAAP) and practices in the financial services industry</font><font style="font-family:Georgia;font-size:9pt;">. </font><font style="font-family:Georgia;font-size:9pt;">For discussion of our significant accounting policies, see</font><font style="font-family:Georgia;font-size:9pt;"> Note 1 in our Annual Report on Form 10-K for the year ended December 31, 2012 (2012 Form 10-K). </font><font style="font-family:Georgia;font-size:9pt;">There were no material changes to these policies in the first half of 2013. </font><font style="font-family:Georgia;font-size:9pt;">To</font><font style="font-family:Georgia;font-size:9pt;"> prepare the financial statements in conformity with GAAP, management must make estimates based on assumptions about future economic and market conditions (for example, unemployment, market liquidity, real estate prices, etc.) that affect the reported amounts of assets and liabilities at the date of the financial statements and income and expenses during the reporting period and the related disclosures. Although our estimates contemplate current conditions and how we expect them to change in the future, it is reasonably possible that actual conditions could be worse than anticipated in those estimates, which could materially affect our results of operations and financial condition. Management has made significant estimates in several areas, including allowance for credit losses and purchased credit-impaired (PCI) loans (Note 5), valuations of residential mortgage servicing rights (MSRs) (Notes 7 and 8) and financial instruments (Note 13), liability for mortgage loan repurchase losses (Note 8) and income taxes. Actual results could differ from those estimates.</font></p><p style='margin-top:0pt; margin-bottom:0pt'>&#160;</p>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6143-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6132-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6061-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 11, 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false04false 4us-gaap_ComparabilityOfPriorYearFinancialDataus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">T</font><font style="font-family:Georgia;font-size:9pt;">hese unaudited interim financial st</font><font style="font-family:Georgia;font-size:9pt;">atements reflect</font><font style="font-family:Georgia;font-size:9pt;"> all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. 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This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false05false 4us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;font-weight:bold;margin-left:0px;">Acco</font><font style="font-family:Georgia;font-size:9pt;font-weight:bold;">unting S</font><font style="font-family:Georgia;font-size:9pt;font-weight:bold;">tandards Adopted in 2013</font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">In first quarter 2013</font><font style="font-family:Georgia;font-size:9pt;">, we adopted the following new accounting guidance: </font></p><p style='margin-top:0pt; margin-bottom:0pt'></p><ul><li style="margin-left:36px;list-style:disc;"><font style="font-family:Georgia;font-size:9pt;">Accounting Standards Update (ASU or Update) 2011-11, </font><font style="font-family:Georgia;font-size:9pt;font-style:italic;">Disclosures about Offsetting Assets and Liabilities</font><font style="font-family:Georgia;font-size:9pt;">;</font></li><li style="margin-left:36px;list-style:disc;"><font style="font-family:Georgia;font-size:9pt;">ASU 2013-01,</font><font style="font-family:Georgia;font-size:9pt;font-style:italic;"> Clarifying the Scope of Disclosures about Offsetting </font><font style="font-family:Georgia;font-size:9pt;font-style:italic;">Assets and Liabilities</font><font style="font-family:Georgia;font-size:9pt;">; and</font></li><li style="margin-left:36px;list-style:disc;"><font style="font-family:Georgia;font-size:9pt;">ASU 2013-02,</font><font style="font-family:Georgia;font-size:9pt;"> </font><font style="font-family:Georgia;font-size:9pt;font-style:italic;">Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income</font><font style="font-family:Georgia;font-size:9pt;">.</font></li></ul><p style='margin-top:0pt; margin-bottom:0pt'>&#160;</p>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of the adoption of new accounting pronouncements that may impact the entity's financial reporting.No definition available.false06false 4wfc_PrivateShareRepurchasesPolicyPolicyTextBlockwfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;font-weight:bold;margin-left:0px;">Private Share Repurchases </font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">In April 2013 we entered into a private forward repurchase contract </font><font style="font-family:Georgia;font-size:9pt;">with an </font><font style="font-family:Georgia;font-size:9pt;">unrelated third </font><font style="font-family:Georgia;font-size:9pt;">party. </font><font style="font-family:Georgia;font-size:9pt;">We entered into this transaction to complement our open-market common stock repurchase strategies, to allow us to manage our share repurchases in a manner consistent with</font><font style="font-family:Times New Roman;font-size:9pt;"> </font><font style="font-family:Georgia;font-size:9pt;">our</font><font style="font-family:Times New Roman;font-size:9pt;"> </font><font style="font-family:Georgia;font-size:9pt;">capital plan submitted under the 201</font><font style="font-family:Georgia;font-size:9pt;">3</font><font style="font-family:Georgia;font-size:9pt;"> Comprehensive Capital Analysis and Review (CCAR), and to provide an economic benefit to the Company. In connection with this contract, we paid $500 million to the counterparty, which was recorded in permanent equity in the quarter paid</font><font style="font-family:Times New Roman;font-size:9pt;"> </font><font style="font-family:Georgia;font-size:9pt;">and was not subject to re-measurement. The classification of the up-front payment as permanent equity assured that we would have appropriate repurchase timing consistent with our 201</font><font style="font-family:Georgia;font-size:9pt;">3</font><font style="font-family:Georgia;font-size:9pt;"> capital plan, which contemplated a fixed dollar amount available per quarter for share repurchases pursuant to Federal Reserve Board (FRB) supervisory guidance. In return, the counterparty agreed to deliver a variable number of shares based on a per share discount to the volume-weighted average stock price over the contract period. </font><font style="font-family:Georgia;font-size:9pt;">This contract expires in third quarter 2013; however, the counterparty has the right to accelerate settlement. </font><font style="font-family:Georgia;font-size:9pt;">There were no scenarios where the contract would not either physically settle in shares or allow us to choose the settlement method</font><font style="font-family:Georgia;font-size:9pt;">. </font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font><font style="font-family:Georgia;font-size:9pt;">In July 2013 we entered into a similar private forward repurchase contract and paid $500 million to an unrelated third party. </font><font style="font-family:Georgia;font-size:9pt;">In return, the counterparty agreed to deliver a variable number of shares based on a per share discount to the volume-weighted average stock price over the contract period. </font><font style="font-family:Georgia;font-size:9pt;">This contract expires in </font><font style="font-family:Georgia;font-size:9pt;">third</font><font style="font-family:Georgia;font-size:9pt;"> quarter 2013; however, the counterparty has the right to accelerate settlement. The amount we paid to the counterparty meets accounting requirements to be treated as a permanent equity reduction. </font></p><p style='margin-top:0pt; margin-bottom:0pt'>&#160;</p>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for the reporting of a private forward repurchase contract with an unrelated third party.No definition available.false07false 4us-gaap_SubsequentEventsPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:7.5pt;font-weight:bold;margin-left:0px;">Subsequent Events</font><font style="font-family:Georgia;font-size:9pt;">We have evaluated the effects of events that have occurred subsequent to period end June 30, 2013, and there have been no material events that would require</font><font style="font-family:Georgia;font-size:9pt;"> recognition in our</font><font style="font-family:Georgia;font-size:9pt;"> </font><font style="font-family:Georgia;font-size:9pt;">second</font><font style="font-family:Georgia;font-size:9pt;"> quarter</font><font style="font-family:Georgia;font-size:9pt;"> </font><font style="font-family:Georgia;font-size:9pt;">2013 consolidated financial statements or disclosure in the Notes to the financial statements</font><font style="font-family:Georgia;font-size:9pt;">, other than a legal matter on August 5, 2013, discussed in Note 11</font><font style="font-family:Georgia;font-size:9pt;">.</font><font style="font-family:Georgia;font-size:9pt;"> </font></p>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for reporting subsequent events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 false08false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false truefalseFROM_Jan01_2013_TO_Jun30_2013_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_AccountingStandardsUpdate201111Memberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseASU 2011-11, Disclosure about Offsetting Assets and Liabilities [Member]us-gaap_AdjustmentsForNewAccountingPronouncementsAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_AccountingStandardsUpdate201111Memberus-gaap_AdjustmentsForNewAccountingPronouncementsAxisexplicitMembernanafalse09true 3wfc_SignificantAccountingPoliciesLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse010false 4us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;font-weight:bold;margin-left:0px;">ASU 2011-11 </font><font style="font-family:Georgia;font-size:9pt;">expands the disclosure requirements for certain financial instruments and derivatives that are subject to enforceable master netting agreements or similar arrangements. The disclosures are required regardless of whether the instruments have been offset (or netted) in the statement of financial position. Under ASU 2011-11, companies must describe the nature of offsetting arrangements and provide quantitative information about those agreements, including the gross and net amounts of financial instruments that are recognized in the statement of financial position. </font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">We adopted this guidance in </font><font style="font-family:Georgia;font-size:9pt;">first quarter 2013 with retrospective application. 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margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;margin-left:0px;">In January 2013, the FASB issued </font><font style="font-family:Georgia;font-size:9pt;font-weight:bold;">ASU 2013</font><font style="font-family:Georgia;font-size:9pt;font-weight:bold;">-01</font><font style="font-family:Georgia;font-size:9pt;">, which clarifies the scope of ASU 2011-11 by limiting the disclosures to derivatives, repurchase agreements, and securities lending transactions to the extent they are subject to an enforceable master netting or similar arrangement. </font></p>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of the adoption of new accounting pronouncements that may impact the entity's financial reporting.No definition available.false014false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse4false truefalseFROM_Jan01_2013_TO_Jun30_2013_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_AccountingStandardsUpdate201302MemberMemberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income [Member]us-gaap_AdjustmentsForNewAccountingPronouncementsAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_AccountingStandardsUpdate201302MemberMemberus-gaap_AdjustmentsForNewAccountingPronouncementsAxisexplicitMembernanafalse015true 3wfc_SignificantAccountingPoliciesLineItemswfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse016false 4us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Georgia;font-size:9pt;font-weight:bold;margin-left:0px;">ASU 2013-02 </font><font style="font-family:Georgia;font-size:9pt;">requires companies to disclose the effect on net income line items from significant amounts reclassified out of accumulated other comprehensive income and entirely into net income. </font><font style="font-family:Georgia;font-size:9pt;">If</font><font style="font-family:Georgia;font-size:9pt;"> reclassifications are partially or entirely capitalized on the balance sheet, then companies must provide a cross-reference to disclosures that provide information about the effect of the reclassifications. </font><font style="font-family:Georgia;font-size:9pt;">We adopted this guidance in first quarter 2013 with </font><font style="font-family:Georgia;font-size:9pt;">ret</font><font style="font-family:Georgia;font-size:9pt;">rospective application. </font><font style="font-family:Georgia;font-size:9pt;">Th</font><font style="font-family:Georgia;font-size:9pt;">is</font><font style="font-family:Georgia;font-size:9pt;"> Update </font><font style="font-family:Georgia;font-size:9pt;">did</font><font style="font-family:Georgia;font-size:9pt;"> not affect our consolidated financial results as it amends only the disclosure requirements for accumulated other comprehensive income.</font><font style="font-family:Georgia;font-size:9pt;"> </font><font style="font-family:Georgia;font-size:9pt;">See Note 17 for expanded disclosures on reclassification adjustments.</font></p>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of the adoption of new accounting pronouncements that may impact the entity's financial reporting.No definition available.false0falseSummary of Significant Accounting Policies (Policies)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies116