2.2.0.25falsefalse0203 - Disclosure - Stock-Based Compensationtruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 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$2true0us-gaap_ShareBasedCompensationAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00falsefalsefalsefalsefalse | Otherxbrli:stringItemTypestringNo definition available.falsefalse
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<!-- Begin Block Tagged Note 3 - us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock-->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>3. STOCK-BASED COMPENSATION</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO’s stock-based employee compensation plans are comprised of stock options, stock-settled
stock appreciation rights and restricted stock units. Compensation cost for all stock-based awards
is measured at fair value on the date of grant, and compensation cost is recognized, net of
estimated forfeitures, over the service period for awards expected to vest. The fair value of stock
options and stock-settled appreciation rights is determined using the Black-Scholes valuation
model. The fair value of restricted stock units is determined by the grant-date closing price of
WESCO’s common stock. The forfeiture assumption is based on WESCO’s historical employee behavior
that is reviewed on an annual basis. No dividends are assumed.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     During the three month periods ended March 31, 2011 and 2010, WESCO granted the following
stock-settled stock appreciation rights and restricted stock units at the following weighted
average assumptions:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: px solid #000000"><b>Three Months Ended March 31,</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>2011</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>2010</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="7" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Stock-settled appreciations rights granted
</div></td>
<td> </td>
<td> </td>
<td align="right">379,757</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">10,750</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Restricted stock units
</div></td>
<td> </td>
<td> </td>
<td align="right">53,852</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Risk free interest rate
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">2.4</td>
<td nowrap="nowrap">%</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">2.2</td>
<td nowrap="nowrap">%</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Expected life
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td colspan="0" nowrap="nowrap" align="right">5.0 years</td>
<td nowrap="nowrap"> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td colspan="0" nowrap="nowrap" align="right">4.5 years</td>
<td nowrap="nowrap"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Expected volatility
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">49</td>
<td nowrap="nowrap">%</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">50</td>
<td nowrap="nowrap">%</td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     For the three months ended March 31, 2011 and 2010, the weighted average fair value
per stock-settled appreciation right granted was $26.90 and $12.63, respectively. For the three
months ended March 31, 2011, the weighted average fair value per restricted stock unit granted was
$60.05.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO recognized $5.0 million and $3.5 million of non-cash stock-based compensation expense,
which is included in selling, general and administrative expenses, for the three months ended March
31, 2011 and 2010, respectively. As of March 31, 2011, there was $27.0 million of total
unrecognized compensation cost related to non-vested stock-based compensation arrangements for all
awards previously made, of which approximately $10.5 million is expected to be recognized over the
remainder of 2011, $10.0 million in 2012, $6.0 million in 2013 and $0.5 million in 2014.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     During the three months ended March 31, 2011 and 2010, the total intrinsic value of awards
exercised was $6.0 million and $0.9 million, respectively, and the total amount of cash received
from the exercise of options was $0.2 million and $0.4 million, respectively. The tax benefit
associated with the exercise of awards for the three months ended March 31, 2011 and 2010 totaled
$1.0 million and $0.4 million, respectively, and was recorded as an increase to additional capital.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The following table sets forth a summary of stock options and stock-settled stock appreciation
rights and related information for the three months ended March 31, 2011:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="52%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Weighted</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Weighted Average</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Aggregate</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Average</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Remaining</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Intrinsic</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Exercise</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Contractual Term</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Value</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Awards</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Price</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(In Years)</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(In Thousands)</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Outstanding at December 31, 2010
</div></td>
<td> </td>
<td> </td>
<td align="right">4,498,303</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">36.38</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Granted
</div></td>
<td> </td>
<td> </td>
<td align="right">379,757</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">60.05</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Exercised
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(210,467</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">29.67</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Forfeited
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(55,130</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">43.23</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Outstanding at March 31, 2011
</div></td>
<td> </td>
<td> </td>
<td align="right">4,612,463</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">38.55</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">6.6</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">94,093</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Exercisable at March 31, 2011
</div></td>
<td> </td>
<td> </td>
<td align="right">2,793,784</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">39.14</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">5.2</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">56,990</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The following table sets forth a summary of restricted stock units and related information for the three months
ended March 31, 2011:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Weighted</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Average</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Fair</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Awards</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Value</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Unvested at December 31, 2010
</div></td>
<td> </td>
<td> </td>
<td align="right">392,493</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">28.36</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Granted
</div></td>
<td> </td>
<td> </td>
<td align="right">53,852</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">60.05</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Vested
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(577</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">27.79</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Forfeited
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(4,087</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">30.90</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Unvested at March 31, 2011
</div></td>
<td> </td>
<td> </td>
<td align="right">441,681</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">32.21</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
</div>
<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
<!-- Begin Block Tagged Notefalsefalsefalsefalsefalse | Otherus-types:textBlockItemTypestringDisclosure of compensation-related costs for share-based compensation which may include disclosure of policies, compensation plan details, allocation of stock compensation, incentive distributions, share-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
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