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2.2.0.25falsefalse30903 - Disclosure - Income Taxes (Tables)truefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) / shares USD ($) $Duration_1_1_2010_To_12_31_2010http://www.sec.gov/CIK0000936468duration2010-01-01T00:00:002010-12-31T00:00:00Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_IncomeTaxExpenseBenefitAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseIncome Taxes3false0lmt_ProvisionForIncomeTaxExpenseTableTextBlocklmtfalsenadurationProvision for income tax expense tablefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="73%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">    (In millions)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2008</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Federal income taxes:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Current</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">589</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">667</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,378</td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 1px solid;" valign="top"> Deferred</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">589</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">583</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">55</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="top"> Total federal income taxes</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">1,178</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">1,250</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">1,433</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Foreign income taxes:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Current</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26</td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 1px solid;" valign="top"> Deferred</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">(5</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">) </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">(15</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">) </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">—  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td style="border-bottom: #000000 2px solid;" valign="top"> Total foreign income taxes</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">3</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">(19</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">) </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">26</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 2px solid;" valign="top"> Income tax expense</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">1,181</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">1,231</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">1,459</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td></tr></table> </div>    (In millions)    2010      2009      2008   Federal income taxes:    falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvision for income tax expense tableNo authoritative reference available.falsefalseProvision for Federal and Foreign Income Tax Expense4false0lmt_ReconciliationOfIncomeTaxExpenseComputedUsingUSStatutoryFederalTaxRateToActualIncomeTaxExpenseTextBlocklmtfalse nadurationReconciliation of Income Tax Expense Computed Using the U S Statutory Federal Tax Rate To Actual Income Tax Expensefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="73%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">    (In millions)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2008</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income tax expense at the U.S. federal statutory tax rate</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,339</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,481</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,619</td> <td valign="bottom">  </td></tr> <tr><td valign="top"> Increase (decrease) in tax expense:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> U.S. manufacturing activity benefit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(110</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(39</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(67</td> <td valign="bottom">) </td></tr> <tr><td valign="top"> Medicare Part D law change</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">96</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Tax deductible dividends</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(56</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(49</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(38</td> <td valign="bottom">) </td></tr> <tr><td valign="top"> Research and development tax credit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(43</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(43</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(36</td> <td valign="bottom">) </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 1px solid;" valign="top"> Other, net</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">(45</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">) </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">(119</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">) </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">(19</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">) </td></tr> <tr><td style="border-bottom: #000000 2px solid;" valign="top"> Income tax expense</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">1,181</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">1,231</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">1,459</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td></tr></table> </div>    (In millions)    2010      2009      2008   Income tax expense at the U.S. federalfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringReconciliation of Income Tax Expense Computed Using the U S Statutory Federal Tax Rate To Actual Income Tax ExpenseNo authoritative reference available.falsefalseReconciliation of Income Tax Expense Computed Using the U S Statutory Federal Tax Rate To Actual Income Tax Expense5false0lmt_DeferredT axAssetsAndLiabilitiesTextBlocklmtfalsenadurationDeferred Tax Assets and Liabilities [Text Block]falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">(In millions)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred tax assets related to:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Accrued compensation and benefits</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">877</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">796</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pensions</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,642</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,664</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other postretirement benefit obligations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">459</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">565</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Contract accounting methods</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">419</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">391</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Planned sale of PAE</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">179</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Foreign company operating losses and credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="top"> Valuation allowance</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">—  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">(13</td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 1px solid;" valign="top"> Deferred tax assets, net</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">5,590</td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">5,418</td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Deferred tax liabilities related to:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Goodwill and purchased intangibles</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">336</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">371</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Property, plant and equipment</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">558</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">343</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 1px solid;" valign="top"> Exchanged debt securities and other (a) </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">189</td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">111</td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">  </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="top"> Deferred tax liabilities</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">1,083</td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">825</td> <td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 2px solid;" valign="top"> Net deferred tax assets (b) </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">4,507</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" nowrap="nowrap">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">4,593</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" nowrap="nowrap">  </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left"> (a) </td> <td valign="top" align="left"> Includes deferred tax liabilities associated with the exchange of debt securities in 2010 (see Note 10) and 2006. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left"> (b) </td> <td valign="top" align="left"> Includes net foreign current deferred tax liabilities, which are included on the Balance Sheets in other current liabilities. </td></tr></table> </div>(In millions)    2010      2009   Deferred tax assets related to:       Accrued compensationfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDeferred Tax Assets and Liabilities [Text Block]No authoritative reference available.falsefalseComponents of Federal and Foreign Deferred Tax Assets and Liabilities6false0lmt_UnrecognizedTaxBenefitsReconciliationTableTextBlocklmtfalsenadurationUnrecognized Tax Benefits Reconciliation, Table [Text Block]falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="86%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">    (In millions)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance at January 1</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">217</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">250</td> <td valign="bottom">  </td></tr> <tr><td valign="top"> Tax positions related to the current year</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">73</td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">39</td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Increase (decrease) related to tax positions in prior years:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Recognition of benefits from resolution of issues with IRS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(54</td> <td valign="bottom">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Reclassification to liabilities of discontinued operation held for sale</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(29</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom">  </td></tr> <tr><td valign="top"> Other, net</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(16</td> <td valign="bottom">) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Decreases related to settlements with taxing authorities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Settlements with taxing authorities for prior years</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(18</td> <td valign="bottom">) </td></tr> <tr bgcolor="#cceeff"><td style="border-bottom: #000000 1px solid;" valign="top"> Advance payment for pending matters</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">(85</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">) </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="right">—  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td style="border-bottom: #000000 2px solid;" valign="top"> Balance at December 31</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">160</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 2px solid;" valign="bottom">$</td> <td style="border-bottom: #000000 2px solid;" valign="bottom" align="right">217</td> <td style="border-bottom: #000000 2px solid;" valign="bottom">  </td></tr></table> </div>    (In millions)    2010      2009   Balance atfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringUnrecognized Tax Benefits Reconciliation, Table [Text Block]No authoritative reference available.falsefalseUnrecognized Tax Benefits Related to Permanent and Temporary Tax Adjustments Exclusive of Interest15Income Taxes (Tables)UnKnownUnKnow nUnKnownUnKnownfalsetrue