2.2.0.7 false Accounting Policies 0202 - Disclosure - Accounting Policies true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Accounting Policies [Abstract] 0 wcc_AccountingPoliciesAbstract wcc false na duration Accounting Policies. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string Accounting Policies. false 3 ACCOUNTING POLICIES 1 us-gaap_SignificantAccountingPoliciesTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0   <div align="left" 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 Regulation S-X 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 2009 Annual Report on Form 10-K filed with the SEC. The December 31, 2009 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 June 30, 2010, the unaudited condensed consolidated statements of income for the three and six months ended June 30, 2010 and 2009, respectively, and the unaudited condensed consolidated statements of cash flows for the six months ended June 30, 2010 and 2009, 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 Note false false false us-types:textBlockItemType textblock This 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 false 1 2 false UnKnown UnKnown UnKnown false true