1.0.0.3 false Employee Stock Based Compensation false 1 $ false false Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 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 Employee Stock-Based Compensation [Abstract] 0 lll_EmployeeStockBasedCompensationAbstract lll false na duration string Employee Stock Based Compensation. false false false false false true false false false 1 false false 0 0 false false Employee Stock Based Compensation. false 3 Employee Stock-Based Compensation 1 lll_EmployeeStockBasedCompensationTextBlock lll false na duration string Includes a description of all new employee stock-based compensation plans approved during the current fiscal year and the... false false false false false false false false false 1 false false 0 0   <div style="margin-left: 0%"> <div style="margin-top: 9pt; font-size: 1pt">  </div> <div style="margin-top: 9pt; font-size: 1pt">  </div> <table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: #ffffff; text-align: left"> <tr> <td width="3%"></td> <td width="97%"></td> </tr> <tr valign="top"> <td> <b><font style="font-family: 'Times New Roman', Times">18. </font></b> </td> <td> <b><font style="font-family: 'Times New Roman', Times">Employee Stock-Based Compensation</font></b> </td> </tr> </table> <div style="margin-top: 6pt; font-size: 1pt">  </div> <div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 4%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: #ffffff"> At its Annual Meeting of Stockholders held on April 28, 2009, the stockholders of L-3 Holdings approved the L-3 Communications Corporation 2009 Employee Stock Purchase Plan (2009 ESPP), which became effective on July 1, 2009. As a result, no new options to purchase shares of L-3 Holdings’ common stock will be granted under the Company’s prior employee stock purchase plan (2001 ESPP). </div> <div style="margin-top: 6pt; font-size: 1pt">  </div> <div align="left" style="margin-left: 0%; margin-right: 0%; text-indent: 4%; font-size: 10pt; font-family: 'Times New Roman', Times; color: #000000; background: #ffffff"> Under the 2009 ESPP, eligible employees are offered options to purchase shares of L-3 Holdings’ common stock at 85% of the fair market value of L-3 Holdings’ common stock on the last day of each six-month offering period. Eligible employees include all employees of the Company, or of a subsidiary or affiliate of the Company that has been designated to participate in the 2009 ESPP. Offering periods begin on the first trading day in January and July of each calendar year and end on the last trading day in June and December of each calendar year. Fair market value is defined as the average of the highest and lowest sales price of a share of L-3 Holdings’ common stock on the last trading day of the trading period. Share purchases are funded through payroll deductions of up to 10% of a participating employee’s compensation for each payroll period, or $21,250 each calendar year. Employees may not purchase more than $25,000 worth of L-3 Holdings’ common stock for each year based on the value of the common stock at the beginning of each offering period during the year. After adjustment for the shares issued under the 2001 ESPP, the 2009 ESPP authorizes L-3 Holdings to issue up to 7.4 million shares. No shares will be issued under the 2009 ESPP until the conclusion of the first six-month offering period, which began on July 1, 2009 and ends on December 31, 2009. </div>  </div>   <div style="margin-left: 0%">  <div style="margin-top: 0pt; font-size: 1pt"> </div> <div align="center" style="margin-left: 0%; margin-right: 0%; font-size: 10pt; font-family: Arial, Helvetica; color: #000000; background: #ffffff"> <b> <font style="font-family: 'Times New Roman', Times"> </font> </b> </div> <div style="margin-top: 0pt; font-size: 1pt"> </div>  </div>  <!-- Begin Block Tagged Note false false Includes a description of all new employee stock-based compensation plans approved during the current fiscal year and the impact, if any, on previously approved employee stock-based compensation plans. No authoritative reference available. false false 1 2 false UnKnown UnKnown UnKnown false true