2.2.0.25falsefalse00405 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical)truefalseIn Millions, except Per Share datafalse1falsefalseUSDfalsefalse1/1/2010 - 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$2falsefalseUSDfalsefalse1/1/2009 - 12/31/2009
USD ($)
USD ($) / shares
$Duration_1_1_2009_To_12_31_2009http://www.sec.gov/CIK0000936468duration2009-01-01T00:00:002009-12-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$3falsefalseUSDfalsefalse1/1/2008 - 12/31/2008
USD ($)
USD ($) / shares
$Duration_1_1_2008_To_12_31_2008http://www.sec.gov/CIK0000936468duration2008-01-01T00:00:002008-12-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit14Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_StatementOfStockholdersEquityAbst
ractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse3false0us-gaap_CommonStockDividendsPerShareDeclaredus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse2.642.64falsetruefalsefalsefalse2truefalsefalse2.342.34falsetruefalsefalsefalse3truefalsefalse1.831.83falsetruefalsefalsefalseEPSus-types:perShareItemTypedecimalAggregate dividends declared during the p
eriod for each share of common stock outstanding.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3
falsetrue4false0lmt_OtherComprehensiveIncomePostretirementBenefitPlansUnrecognizedAmountsTaxlmtfalsedebitdurationTax effects of the actuarial gains (losses) due to differences between actual experience and actuarial assumptions, and prior...falsefalsefalsefalsefalsefalsefalsefalsefalsefalse<
/IsReverseSign>verboselabel1truefalsefalse531000000531falsetruefalsefalsefalse2truefalsefalse121000000121falsetruefalsefalsefalse3truefalsefalse40110000004011falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effects of the actuarial 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 occurr
ed during the year and were recognized as a component of other comprehensive income (loss) at the end of the year.No authoritative reference available.falsefalse5false0lmt_OtherComprehensiveIncomePostretirementBenefitPlansReclassificationAdjustmentForRecognitionOfPriorPeriodAmountsTaxlmtfalsedebitdurationTax effects of amounts that were amortized as a component of expense for the year and are no longer included in accumulated...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse304000000304falsetruefalsefalsefalse2truefalsefalse158000000158falsetruefalsefalsefalse3truefalsefalse2500000025falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax
effects of amounts 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.falsefalse34Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)MillionsUnKnownNoRoundingUnKnownfalsetrue
