Basis of Presentation and Significant Accounting Policies (Policies)	3 Months Ended
	Feb. 27, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation, Policy	Basis of Presentation CLARCOR Inc. and its subsidiaries (collectively, the “Company” or “CLARCOR”) is a global provider of filtration products, filtration systems and services, and consumer and industrial packaging products. As discussed further in Note 15, the Company has three reportable segments: Engine/Mobile Filtration, Industrial/Environmental Filtration and Packaging. On June 27, 2015, the Company completed the disposition of J.L. Clark, Inc. ("J.L. Clark"), which was the sole operating company within the Company's Packaging segment. The Consolidated Condensed Financial Statements include all domestic and foreign subsidiaries that were more than 50% owned and controlled as of each respective reporting period presented. All intercompany accounts and transactions have been eliminated. The Consolidated Condensed Statements of Earnings, the Consolidated Condensed Statements of Comprehensive Earnings and the Consolidated Condensed Statements of Cash Flows for the periods ended February 27, 2016 and February 28, 2015 and the Consolidated Condensed Balance Sheet as of February 27, 2016 have been prepared by the Company without audit. The Consolidated Condensed Financial Statements have been prepared on the same basis as those in the Company’s Annual Report on Form 10-K for the fiscal year ended November 28, 2015 (“2015 Form 10-K”). The November 28, 2015 Consolidated Condensed Balance Sheet data was derived from the Company’s year-end audited Consolidated Financial Statements as presented in the 2015 Form 10-K but does not include all disclosures required by accounting principles generally accepted in the United States of America ("U.S. GAAP"). In the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows have been made. The results of operations for the period ended February 27, 2016, are not necessarily indicative of the operating results for the full year. The information included in this Form 10-Q should be read in conjunction with the audited Consolidated Financial Statements and accompanying notes included in the 2015 Form 10-K.
Cash and Cash Equivalents and Restricted Cash, Policy	Cash and Cash Equivalents and Restricted Cash Highly liquid investments with an original maturity of three months or less when purchased and that are readily saleable are considered to be cash and cash equivalents. Restricted cash represents funds held in escrow and cash balances held by German banks as collateral for certain guarantees of overseas subsidiaries. Restricted cash classified as current corresponds to funds held in escrow that will be used within one year or guarantees that expire within one year.
Inventories, Policy	Inventories Inventories are valued at the lower of cost or market primarily determined on the first-in, first-out (“FIFO”) method of inventory costing, which approximates current cost.
Property, Plant and Equipment, Policy	Property, Plant and Equipment Plant assets classified as held for sale are initially measured at the lesser of the assets' carrying amount or the fair value less costs to sell. Gains or losses are recognized for any subsequent changes in the fair value less cost to sell; however, gains are only recognized to the extent of cumulative losses previously recognized. Plant assets classified as Assets held for sale are not depreciated.
Derivative Instruments and Hedging Activities, Policy	Derivative Instruments and Hedging Activities The Company is exposed to various market risks that arise from transactions entered into in the normal course of business, including market risks associated with changes in foreign currency exchange rates and changes in interest rates. The Company may make use of derivative instruments to manage certain such risks, including derivatives designated as accounting hedges and/or those utilized as economic hedges which are not designated as accounting hedges. The Company does not hold or issue derivatives for trading or speculative purposes. All derivatives are recorded at fair value in the Consolidated Balance Sheets. Each derivative is designated as either a fair value hedge or remains undesignated. Changes in the fair value of derivatives that are designated and effective as fair value hedges are recognized currently in net income. These changes are offset in net income to the extent the hedge was effective by fair value changes related to the risk being hedged on the hedged item. Changes in fair value of undesignated hedges are recognized currently in net income. All ineffective changes in derivative fair values are recognized currently in net income. The Company formally documents all relationships between designated hedging instruments and hedged items as well as its risk management objective and strategy for undertaking hedge transactions. Both at inception and on an ongoing basis the hedging instrument is assessed as to its effectiveness. If and when a derivative is determined not to be highly effective as a hedge, or the underlying hedge transaction is no longer likely to occur, the hedge designation is removed, or the derivative is terminated, the hedge accounting discussed above is discontinued.
New Accounting Guidance, Policy	New Accounting Guidance In May 2014, the FASB issued Accounting Standards Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers." The purpose of ASU 2014-09 is to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. The amendments in ASU 2014-09 require a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. ASU 2014-09 is effective for annual reporting periods, and interim periods within that period, beginning after December 15, 2016 (fiscal year 2018 for the Company). Subsequently, in August 2015, the FASB issued ASU No. 2015-14, "Revenue from Contracts with Customers (Topic 606) Deferral of the Effective Date," that moves the effective date out one year (fiscal 2019 for the Company). Companies may use either a full retrospective or a modified retrospective approach to adopt ASU 2014-09 and early adoption of one year prior to the required effective date is permitted. The Company has not yet determined the potential effects of the adoption of ASU 2014-09 and ASU 2015-14 on its Consolidated Financial Statements. In April 2015, the FASB issued ASU 2015-03, "Simplifying the Presentation of Debt Issuance Costs," which requires that debt issue costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the amount of the debt liability, consistent with debt discounts and premiums. Amortization of such costs is still reported as interest expense. ASU 2015-03 is effective for fiscal years, and interim periods therein, beginning after December 15, 2015 (fiscal year 2017 for the Company), but early adoption is allowed. In August 2015, the FASB issued ASU 2015-15, "Presentation and Subsequent Measurement of Debt Issue Costs Associated with Line-of-Credit Arrangements." ASU 2015-15 supplements the requirements of ASU 2015-03 by allowing an entity to defer and present debt issue costs related to a line of credit arrangement as an asset and subsequently amortize the deferred costs ratably over the term of the line of credit arrangement. The Company has not yet determined in which period it will adopt the new guidance. Upon adoption, long-term debt issuance costs will be reclassified from other long-term assets to long-term debt on the Condensed Consolidated Balance Sheets. In July 2015, the FASB issued ASU 2015-11, "Simplifying the Measurement of Inventory." Topic 330, Inventory, currently requires an entity to measure inventory at the lower of cost or market, with market value represented by replacement cost, net realizable value or net realizable value less a normal profit margin. The amendments in ASU 2015-11 require an entity to measure inventory at the lower of cost or net realizable value. ASU 2015-11 is effective for annual reporting periods, and interim periods within that period, beginning after December 15, 2016 (fiscal year 2018 for the Company). The Company does not expect the adoption of this guidance to have a material impact on its Consolidated Financial Statements. In November 2015, the FASB issued ASU 2015-17, "Balance Sheet Classification of Deferred Taxes," which simplifies the presentation of deferred taxes by requiring that deferred tax assets and liabilities be presented as noncurrent on the balance sheet. ASU 2015-17 is effective for annual reporting periods, and interim periods therein, beginning after December 15, 2015 (fiscal year 2017 for the Company). The Company adopted this guidance, prospectively, as of November 30, 2015. In February 2016, the FASB issued ASU 2016-02, "Leases," which amends leasing guidance by requiring companies to recognize a right-of-use asset and a lease liability for all operating and capital (finance) leases with lease terms of greater than twelve months. The lease liability will be equal to the present value of lease payments. The lease asset will be based on the lease liability, subject to adjustment, such as for initial direct costs. For income statement purposes, leases will continue to be classified as operating or capital (finance), with lease expense in both cases calculated substantially the same as under the prior leasing guidance. The updated guidance is effective for interim and annual periods beginning after December 15, 2018 (fiscal year 2020 for the Company), and early adoption is permitted. The Company has not yet determined the potential effects of the adoption of ASU 2016-02 on its Consolidated Financial Statements.