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2.2.0.25truefalse00400 - Statement - Consolidated Statements of Stockholders' EquitytruefalseIn Millionsfalse1falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Common Stock 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_201063http://www.sec.gov/CIK0000936468na0001-01-01T00:00:000001-01-01T00:00:00falsefalseus-gaap_CommonStockMemberus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonStockMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217 USDiso42170USDUSD$2falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Additional Paid-In Capital 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_201062http://www.sec.gov/CIK0000936468na0001-01-01T00:00:000001-01-01T00:00:00falsefalseus-gaap_AdditionalPaidInCapitalMemberus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AdditionalPaidInCapitalMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003 /iso4217USDiso42170USDUSD$3falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Retained Earnings 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_2010623http://www.sec.gov/CIK0000936468na0001-01-01T00:00:000001-01-01T00:00:00falsefalseus-gaap_RetainedEarningsMemberus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_RetainedEarningsMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Accumulated Other Comprehensive Income Loss 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_201022http://www.sec.gov/CIK0000936468na0001-01-01T00:00:000001-01-01T00:00:00falsefalseus-gaap_AccumulatedOtherComprehensiveIncomeMemberus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedOtherComprehensiveIncomeMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUnit12Standard http://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Comprehensive Income (Loss) 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_201023http://www.sec.gov/CIK0000936468na0001-01-01T00:00:000001-01-01T00:00:00falsefalseus-gaap_ComprehensiveIncomeMemberus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ComprehensiveIncomeMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217 USDiso42170USDUSD$6falsefalseUSDfalsefalse10/1/2010 - 12/31/2010 USD ($) / shares USD ($) $Duration_10_1_2010_To_12_31_20104http://www.sec.gov/CIK0000936468na0001-01-01T00:00:000001-01-01T00:00:00Unit13Dividehttp://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$1false0us-gaap_StockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsetruefalsefalsefalsetruefalsefalseperiodstartlabelinstant2008-01-01T00:00:000001-01-01T00:00:001truefalsefalse409000000409falsetruefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalsefalse1124700000011247falsetruefalsetruefalse4truefalsefalse-1851000000-1851falsetruefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse98050000009805falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Stockholders' Equity (de ficit) items, net of receivables from officers, directors owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 falsefalse2false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalsef alse32170000003217falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5truefalsefalse32170000003217falsefalsefalsetruefalse6truefalsefalse32170000003217falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalse3false0us-gaap_StockRepurchasedAndRetiredDuringPeriodValueus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalse false-29000000-29falsefalsefalsetruefalse2truefalsefalse-796000000-796falsefalsefalsetruefalse3truefa lsefalse-2106000000-2106falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-2931000000-2931falsefalsefalsefalsefalse Monetaryxbrli:monetaryItemTypemonetaryValue of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 falsefalse4false0us-gaap_DividendsCashus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalsefal se-737000000-737falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-737000000-737falsefalsefalsefalsefalseMonetaryx brli:monetaryItemTypemonetaryCash dividends declared by an entity during the period for all classes of stock (common, preferred). This element includes paid and unpaid dividends declared during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 14 -Subparagraph l falsefalse5false0lmt_StockBasedAwardsAndESOPActivitylmtfalsecreditdurationValue of stock issued during the period as a result of the exercise of stock options, the value of stock issued during the...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse80000008falsefalsefalsetruefalse2truefalsefalse738000000738falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse746000000746falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryValue of stock issued during the period as a result of the exercise of stock options, the value of stock issued during the period related to employee stock ownership plans, and the amount of recognized share-based compensation during the period.No authoritative reference available.falsefalse6false0us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse50000005falsefalsefalsetruefalse2truefalsefalse5800000058falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse6300000063falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryValue of stock issued during the period upon the conversion of convertible securities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 5 falsefalse7true0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse8false0lmt_OtherComprehensiveIncomePostretirementBenefitPlansUnrecognizedAmountsNetOfTaxlmtfalsecreditdurationActuarial gains (losses) due to differences between actual experience and actuarial assumptions, and prior service credits...falsefalsefalsefalsefalsefalsefalse falsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4truefalsefalse-7299000000-7299 falsefalsefalsetruefalse5truefalsefalse-7299000000-7299falsefalsefalsetruefalse6truefalsefalse-7299000000-7299falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryActuarial gains (losses) due to differences between actual experience and actuarial assumptions, and prior service credits (costs) from improvements or reductions in plan benefits, each of which occurred during the year and were recognized as a component of other comprehensive income (loss) at the end of the year.No authoritative reference available.falsefalse9false0lmt_OtherComprehensiveIncomePostretirementBenefitPlansReclassificationAdjustmentForRecognitionOfPriorPeriodAmountsNetOfTaxlmtfalsecreditdurationAmounts that were amortized as a component of expense for the year and are no longer included in accumulated other...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse 3falsefalsefalse00falsefalsefalsetruefalse4truefalsefalse4600000046falsefalsefalsetruefalse 5truefalsefalse4600000046falsefalsefalsetruefalse6truefalsefalse4600000046falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmounts that were amortized as a component of expense for the year and are no longer included in accumulated other comprehensive income (loss) as of the end of the year.No authoritative reference available.falsefalse10false0lmt_OtherComprehensiveIncomeOtherNetOfTaxlmtfalsedebitdurationAdjustment for other components of othe r comprehensive income not separately disclosed, net of tax, including deferred gains...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4truefalsefalse-45000000-45falsefalsefalsetruefalse5truefalsefalse-45000000-45falsefalsefalsetruefalse6truefalsefalse-45000000-45falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAdjustment for other components of other comprehensive income not separately disclosed, net of tax, including deferred gains (losses) on qualifying hedges and unrealized holding gains (losses) on available-for-sale securities.No authoritative reference available.falsefalse11false0us-gaap_StockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsetruefalsefalsefalsefalsetruefalseperiodendlabelinstant 2008-12-31T00:00:000001-01-01T00:00:001truefalsefalse393000000393falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalsefalse1162100000011621falsefalsefalsetruefalse4truefalsefalse-9149000000-9149falsefalsefalsetruefalse5truefalsefalse-4081000000-4081falsefalsefalsetruefalse6truefalsefalse28650000002865falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Stockholders' Equity (deficit) items, net of receivables from officers, directors owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 falsefalse12false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalse false30240000003024falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5truefalsefalse30240000003024falsefalsefalsetruefalse6truefalsefalse30240000003024falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalse13false0us-gaap_StockRepurchasedAndRetiredDuringPeriodValueus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-25000000-25falsefalsefalsetruefalse2truefalsefalse-440000000-440falsefalsefalsetruefalse3truef alsefalse-1386000000-1386falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-1851000000-1851falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryValue of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 falsefalse14false0us-gaap_DividendsCashus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalsefa lse-908000000-908falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse-908000000-908falsefalsefalsefalsefalseMonetary xbrli:monetaryItemTypemonetaryCash dividends declared by an entity during the period for all classes of stock (common, preferred). This element includes paid and unpaid dividends declared during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 14 -Subparagraph l falsefalse15false0lmt_StockBasedAwardsAndESOPActivitylmtfalsecreditdurationValue of stock issued during the period as a result of the exercise of stock options, the value of stock issued during the...falsefalsefalsefalsefalsefalsefalsefalsefalse< IsReverseSign>truenegated1truefalsefalse50000005falsefalsefalsetruefalse2truefalsefalse440000000440falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6truefalsefalse445000000445falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryValue of stock issued during the period as a result of the exercise of stock options, the value of stock issued during the period related to employee stock ownership plans, and the amount of recognized share-based compensation during the period.No authoritative reference available.falsefalse16true0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstractus-gaaptrue< BalanceType>nadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalse truefalse6falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse17false0lmt_OtherComprehensiveIncomePostretireme ntBenefitPlansUnrecognizedAmountsNetOfTaxlmtfalsecreditdurationActuarial gains (losses) due to differences between actual experience and actuarial assumptions, and prior service credits...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4truefalsefalse214000000214falsefalsefalsetruefalse5truefalsefalse214000000214falsefalsefalsetruefalse6truefalsefalse214000000214falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryActuarial gains (losses) due to differences between actual experience and actuarial assumptions, and prior service credits (costs) from improvements or reductions in plan benefits, each of which occurred during the year and were recognized as a component of other comprehensive income (loss) at the end of the year.No authoritative reference available.falsefalse18false0lmt_OtherComprehensiveIncomePostretirementBenefitPlansReclassificationAdjustmentForRecognitionOfPriorPeriodAmountsNetOfTaxlmtfalsecreditdurationAmounts that were amortized as a component of expense for the year and are no longer included in accumulated other...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsef alsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4truefalsefalse281000000281falsefalsefalsetruefalse5truefalsefalse281000000281falsefalsefalsetruefalse6truefalsefalse281000000281falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmounts that were amortized as a component of expense for the year and are no longer included in accumulated other comprehensive income (loss) as of the end of the year.No authoritati ve reference available.falsefalse19false0lmt_OtherComprehensiveIncomeOtherNetOfTaxlmtfalsedebitdurationAdjustment for other components of other comprehensive income not separately disclosed, net of tax, including deferred gains...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00false< /IsIndependantCurrency>falsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4truefalsefalse5900000059false< /IsIndependantCurrency>falsefalsetruefalse5truefalsefalse5900000059falsefalsefalsetruefalse6truefalsefalse5900000059falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAdjustment for other components of other comprehensive income not separately disclosed, net of tax, including deferred gains (losses) on qualifying hedges and unrealized holding gains (losses) on available-for-sale securities.No authoritative reference available.falsefalse20false0us-gaap_StockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsetruefalsefalsefalsefalsetruefalseperiodendlabelinstant2009-12-31T00:00:000001-01-01T00:00:001truefalsefalse373000000373falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalsefalse1235100000012351falsefalsefalsetruefalse4truefalsefalse-8595000000-8595falsefalsefalsetruefalse5truefalsefalse35780000003578falsefalsefalsetruefalse6truefalsefalse41290000004129falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Stockholders' Equity (deficit) items, net of receivables fro m officers, directors owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 falsefalse21false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3truefalse false29260000002926falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5truefalsefalse29260000002926falsefalsefalsetruefalse6truefalsefalse29260000002926falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. 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