2.2.0.25falsefalse0202 - Disclosure - Accounting Policiestruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Jan-01-2011_Mar-31-2011http://www.sec.gov/CIK0000929008duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0wcc_AccountingPoliciesAbstractwccfalsenadurationAccounting Policies.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAccounting Policies.falsefalseAccounting Policies [Abstract]3false0us-gaap_SignificantAccountingPoliciesTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00  <div style="font-family: 'Times New Roman',Times,serif"> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>2. ACCOUNTING POLICIES</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     <i>Basis of Presentation</i> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     The unaudited condensed consolidated financial statements of WESCO have been prepared in accordance with Rule 10-01 of <font style="white-space: nowrap">Regulation S-X</font> of the Securities and Exchange Commission (the “SEC”). The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in WESCO’s 2010 Annual Report on Form 10-K filed with the SEC. The December 31, 2010 condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     The unaudited condensed consolidated balance sheet as of March 31, 2011, the unaudited condensed consolidated statements of income for the three months ended March 31, 2011 and 2010, respectively, and the unaudited condensed consolidated statements of cash flows for the three months ended March 31, 2011 and 2010, respectively, in the opinion of management, have been prepared on the same basis as the audited consolidated financial statements and include all adjustments necessary for the fair statement of the results of the interim periods. All adjustments reflected in the unaudited condensed consolidated financial statements are of a normal recurring nature unless indicated. Results for the interim periods presented are not necessarily indicative of the results to be expected for the full year. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     <i>Recent Accounting Pronouncements</i> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     Pronouncements issued by the Financial Accounting Standards Board (the “FASB”) or other authoritative accounting standards groups with future effective dates are either not applicable or are not expected to be significant to WESCO’s financial position, results of operations or cash flows. </div>   </div>  <div style="font-family: 'Times New Roman',Times,serif"> </div>  <!-- Begin Block Tagged NotefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element may be used to describe all significant accounting policies of the reporting entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 8 falsefalseACCOUNTING POLICIES12Accounting PoliciesUnKnownUnKnownUnKnownUnKnownfalsetrue