2.2.0.7 false Earnings Per Share 0203 - Disclosure - Earnings Per Share 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 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Earnings Per Share [Abstract] 0 us-gaap_EarningsPerShareAbstract us-gaap true na duration No definition available. 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 No definition available. false 3 Earnings Per Share 1 us-gaap_EarningsPerShareTextBlock 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 style="font-family: 'Times New Roman',Times,serif"> <div align="justify" style="font-size: 10pt; margin-top: 12pt"><b>3.</b>            <b>Earnings Per Share</b> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt">Basic EPS is computed by dividing income available to common stockholders by the weighted-average number of shares of common stock outstanding for the period. The weighted average shares outstanding for diluted EPS includes the incremental effects of the various long-term incentive compensation plans. The calculation of diluted earnings per share for June 30, 2010 and 2009 excludes out-of-the-money stock options that had an anti-dilutive effect. The numerator in calculating both basic and diluted EPS for each period is reported net income. The computation for the three months ended June 30, 2009 is not presented since NiSource had a loss from continuing operations and net loss on the Condensed Statements of Consolidated Income (Loss) (unaudited) during the period. The computation of diluted average common shares follows: </div> <div align="center"> <table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">  <tr valign="bottom"> <td width="70%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="5%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="5%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="5%"> </td> <td width="1%"> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2">Three Months Ended</td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td nowrap="nowrap" align="center" colspan="6">Six Months Ended</td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td style="border-bottom: 1px solid #000000"> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000">June 30,</td> <td style="border-bottom: 1px solid #000000"> </td> <td style="border-bottom: 1px solid #000000"> <div style="text-align: justify">  </div></td> <td nowrap="nowrap" align="center" colspan="7" style="border-bottom: 1px solid #000000">June 30,</td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td nowrap="nowrap" align="left"><i>(in thousands)</i></td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>2010</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td nowrap="nowrap" align="center" colspan="2"><b>2010</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td nowrap="nowrap" align="center" colspan="2">2009</td> <td> </td> </tr>   <tr style="font-size: 1px"> <td colspan="13" align="left" style="border-top: 2px solid #000000"> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">Denominator </div></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:30px; text-indent:-15px">Basic average common shares outstanding </div></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td align="right"><b>277,566</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right"><b>277,258</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right">274,446</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:30px; text-indent:-15px">Dilutive potential common shares </div></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:45px; text-indent:-15px">Shares contingently issuable under employee stock plans </div></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td align="right"><b>300</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right"><b>300</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right">2,400</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:45px; text-indent:-15px">Shares restricted under employee stock plans </div></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td align="right"><b>511</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right"><b>480</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right">108</td> <td> </td> </tr> <tr style="font-size: 1px"> <td colspan="13" align="left" style="border-top: 1px solid #000000"> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Diluted Average Common Shares </div></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td align="right"><b>278,377</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right"><b>278,038</b></td> <td> </td> <td> <div style="text-align: justify">  </div></td> <td> </td> <td align="right">276,954</td> <td> </td> </tr> <tr style="font-size: 1px"> <td colspan="13" align="left" style="border-top: 1px solid #000000"> </td> </tr>  </table> </div> </div>  <!-- Begin Block Tagged Note false false false us-types:textBlockItemType textblock This element may be used to capture the complete disclosure pertaining to an entity's earnings per share. 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