1.0.0.3 true Consolidated Statements of Shareholders Equity (USD $) In Millions false 1 $ true false false false L-3 Holdings' Common Stock us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommonStockMember us-gaap_StatementEquityComponentsAxis explicitMember Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ true false false false Additional Paid-in Capital us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_AdditionalPaidInCapitalMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 3 $ true false false false Treasury Stock us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_TreasuryStockMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 4 $ true false false false Retained Earnings us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_RetainedEarningsMember us-gaap_StatementEquityComponentsAxis explicitMember 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 false 5 $ true false false false Accumulated Other Comprehensive (Loss) Income us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_AccumulatedOtherComprehensiveIncomeMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 6 $ true false false false Noncontrolling Interest us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_NoncontrollingInterestMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 7 $ 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 6 Beginning Balance, Shares at Dec. 31, 2006 3 us-gaap_SharesIssued us-gaap true na instant shares No definition available. false false false true false false true false false 1 false true 125200000 125.2 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 5 Beginning Balance at Dec. 31, 2006 3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false true false false true false false 1 true true 1000000 1 true false 2 true true 3465000000 3465 true false 3 true true -25000000 -25 true false 4 true true 1963000000 1963 true false 5 true true -49000000 -49 true false 6 true true 84000000 84 true false 7 true true 5439000000 5439 false false No definition available. No authoritative reference available. false 7 Measurement date change for retirement benefit plans 3 us-gaap_CumulativeEffectOfInitialAdoptionOfSFAS158 us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -4000000 -4 true false 5 false true 39000000 39 true false 6 false false 0 0 true false 7 false true 35000000 35 false false No definition available. No authoritative reference available. false 8 Cumulative effect adjustment for uncertain income tax positions 3 us-gaap_CumulativeEffectOfInitialAdoptionOfFIN48 us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 4000000 4 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 4000000 4 false false No definition available. No authoritative reference available. false 9 Comprehensive income: 3 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 10 Net income 4 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 745000000 745 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 745000000 745 false false No definition available. No authoritative reference available. false 11 Net Income Attributable to Noncontrolling Interest 4 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true 9000000 9 true false 7 false true 9000000 9 false false No definition available. No authoritative reference available. false 12 Pension and postretirement benefit plans: 4 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 13 Net gain (loss) arising during the period, net of income taxes of $10, $174 and $13, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 18000000 18 true false 6 false false 0 0 true false 7 false true 18000000 18 false false No definition available. No authoritative reference available. false 14 Net prior service cost arising during the period, net of income taxes of $1, $1 and $1, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -2000000 -2 true false 6 false false 0 0 true false 7 false true -2000000 -2 false false No definition available. No authoritative reference available. false 15 Amortization of net loss previously recognized, net of income taxes of $5, $2 and $20, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 9000000 9 true false 6 false false 0 0 true false 7 false true 9000000 9 false false No definition available. No authoritative reference available. false 16 Amortization of prior service cost (credit) previously recognized, net of income taxes of $1 in 2007 and $1 in 2009 5 us-gaap_OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -1000000 -1 true false 6 false false 0 0 true false 7 false true -1000000 -1 false false No definition available. No authoritative reference available. false 17 Foreign currency translation adjustment 4 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 135000000 135 true false 6 false false 0 0 true false 7 false true 135000000 135 false false No definition available. No authoritative reference available. false 18 Unrealized gains on hedging instruments, net of income taxes of $3 in 2007 and $4 in 2008 4 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 4000000 4 true false 6 false false 0 0 true false 7 false true 4000000 4 false false No definition available. No authoritative reference available. true 20 Distributions to noncontrolling interests 3 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true -6000000 -6 true false 7 false true -6000000 -6 false false No definition available. No authoritative reference available. false 23 Cash dividends paid on common stock $1.00, $1.20 and $1.40 per share, in the year 2007, 2008 and 2009 respectively 3 us-gaap_DividendsCommonStockCash us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -126000000 -126 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -126000000 -126 false false No definition available. No authoritative reference available. false 24 Shares issued: 3 lll_SharesIssuedAbstract lll false na duration string Shares issued false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false Shares issued false 25 Employee savings plans 4 us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 125000000 125 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 125000000 125 false false No definition available. No authoritative reference available. false 26 Employee savings plans, Shares 4 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1300000 1.3 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 27 Exercise of stock options 4 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 112000000 112 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 112000000 112 false false No definition available. No authoritative reference available. false 28 Exercise of stock options, Shares 4 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1600000 1.6 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 29 Employee stock purchase plan 4 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 65000000 65 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 65000000 65 false false No definition available. No authoritative reference available. false 30 Employee stock purchase plan, Shares 4 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 800000 0.8 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 31 Stock-based compensation expense 3 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 53000000 53 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 53000000 53 false false No definition available. No authoritative reference available. false 32 Treasury stock purchased 3 us-gaap_TreasuryStockValueAcquiredCostMethod us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true -500000000 -500 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -500000000 -500 false false No definition available. No authoritative reference available. false 33 Treasury stock purchased, Shares 3 us-gaap_TreasuryStockSharesAcquired us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true -5200000 -5.2 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 34 Other 3 us-gaap_StockholdersEquityOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true -4000000 -4 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -4000000 -4 false false No definition available. No authoritative reference available. true 35 Other, Shares 3 lll_StockholdersEquityOtherShares lll false na duration shares Stockholders equity other. false false false false false false false false false 1 false true 500000 0.5 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false Stockholders equity other. No authoritative reference available. true 36 Ending Balance at Dec. 31, 2007 3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 false true 1000000 1 true false 2 false true 3816000000 3816 true false 3 false true -525000000 -525 true false 4 false true 2582000000 2582 true false 5 false true 153000000 153 true false 6 false true 87000000 87 true false 7 false true 6114000000 6114 false false No definition available. No authoritative reference available. false 37 Ending Balance, Shares at Dec. 31, 2007 3 us-gaap_SharesIssued us-gaap true na instant shares No definition available. false false false true false false false true false 1 false true 124200000 124.2 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 9 Comprehensive income: 3 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 10 Net income 4 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 938000000 938 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 938000000 938 false false No definition available. No authoritative reference available. false 11 Net Income Attributable to Noncontrolling Interest 4 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true 11000000 11 true false 7 false true 11000000 11 false false No definition available. No authoritative reference available. false 12 Pension and postretirement benefit plans: 4 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 13 Net gain (loss) arising during the period, net of income taxes of $10, $174 and $13, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -271000000 -271 true false 6 false false 0 0 true false 7 false true -271000000 -271 false false No definition available. No authoritative reference available. false 14 Net prior service cost arising during the period, net of income taxes of $1, $1 and $1, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -1000000 -1 true false 6 false false 0 0 true false 7 false true -1000000 -1 false false No definition available. No authoritative reference available. false 15 Amortization of net loss previously recognized, net of income taxes of $5, $2 and $20, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 3000000 3 true false 6 false false 0 0 true false 7 false true 3000000 3 false false No definition available. No authoritative reference available. false 17 Foreign currency translation adjustment 4 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -222000000 -222 true false 6 false false 0 0 true false 7 false true -222000000 -222 false false No definition available. No authoritative reference available. false 18 Unrealized gains on hedging instruments, net of income taxes of $3 in 2007 and $4 in 2008 4 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 6000000 6 true false 6 false false 0 0 true false 7 false true 6000000 6 false false No definition available. No authoritative reference available. true 20 Distributions to noncontrolling interests 3 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true -12000000 -12 true false 7 false true -12000000 -12 false false No definition available. No authoritative reference available. false 21 Derecognition of noncontrolling interest 3 us-gaap_MinorityInterestDecreaseFromRedemptions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true -3000000 -3 true false 7 false true -3000000 -3 false false No definition available. No authoritative reference available. false 23 Cash dividends paid on common stock $1.00, $1.20 and $1.40 per share, in the year 2007, 2008 and 2009 respectively 3 us-gaap_DividendsCommonStockCash us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -147000000 -147 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -147000000 -147 false false No definition available. No authoritative reference available. false 24 Shares issued: 3 lll_SharesIssuedAbstract lll false na duration string Shares issued false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false Shares issued false 25 Employee savings plans 4 us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 141000000 141 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 141000000 141 false false No definition available. No authoritative reference available. false 26 Employee savings plans, Shares 4 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1500000 1.5 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 27 Exercise of stock options 4 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 51000000 51 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 51000000 51 false false No definition available. No authoritative reference available. false 28 Exercise of stock options, Shares 4 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 700000 0.7 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 29 Employee stock purchase plan 4 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 69000000 69 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 69000000 69 false false No definition available. No authoritative reference available. false 30 Employee stock purchase plan, Shares 4 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 800000 0.8 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 31 Stock-based compensation expense 3 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 64000000 64 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 64000000 64 false false No definition available. No authoritative reference available. false 32 Treasury stock purchased 3 us-gaap_TreasuryStockValueAcquiredCostMethod us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true -794000000 -794 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -794000000 -794 false false No definition available. No authoritative reference available. false 33 Treasury stock purchased, Shares 3 us-gaap_TreasuryStockSharesAcquired us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true -8500000 -8.5 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 34 Other 3 us-gaap_StockholdersEquityOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true -6000000 -6 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -6000000 -6 false false No definition available. No authoritative reference available. true 35 Other, Shares 3 lll_StockholdersEquityOtherShares lll false na duration shares Stockholders equity other. false false false false false false false false false 1 false true -100000 -0.1 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false Stockholders equity other. No authoritative reference available. true 36 Ending Balance at Dec. 31, 2008 3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 false true 1000000 1 true false 2 false true 4135000000 4135 true false 3 false true -1319000000 -1319 true false 4 false true 3373000000 3373 true false 5 false true -332000000 -332 true false 6 false true 83000000 83 true false 7 false true 5941000000 5941 false false No definition available. No authoritative reference available. false 37 Ending Balance, Shares at Dec. 31, 2008 3 us-gaap_SharesIssued us-gaap true na instant shares No definition available. false false false true false false false true false 1 false true 118600000 118.6 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 9 Comprehensive income: 3 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 10 Net income 4 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 901000000 901 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 901000000 901 false false No definition available. No authoritative reference available. false 11 Net Income Attributable to Noncontrolling Interest 4 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true 10000000 10 true false 7 false true 10000000 10 false false No definition available. No authoritative reference available. false 12 Pension and postretirement benefit plans: 4 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 13 Net gain (loss) arising during the period, net of income taxes of $10, $174 and $13, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 19000000 19 true false 6 false false 0 0 true false 7 false true 19000000 19 false false No definition available. No authoritative reference available. false 14 Net prior service cost arising during the period, net of income taxes of $1, $1 and $1, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -1000000 -1 true false 6 false false 0 0 true false 7 false true -1000000 -1 false false No definition available. No authoritative reference available. false 15 Amortization of net loss previously recognized, net of income taxes of $5, $2 and $20, in the year 2007, 2008 and 2009 respectively 5 us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 30000000 30 true false 6 false false 0 0 true false 7 false true 30000000 30 false false No definition available. No authoritative reference available. false 16 Amortization of prior service cost (credit) previously recognized, net of income taxes of $1 in 2007 and $1 in 2009 5 us-gaap_OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 1000000 1 true false 6 false false 0 0 true false 7 false true 1000000 1 false false No definition available. No authoritative reference available. false 17 Foreign currency translation adjustment 4 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 117000000 117 true false 6 false false 0 0 true false 7 false true 117000000 117 false false No definition available. No authoritative reference available. false 20 Distributions to noncontrolling interests 3 us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true -8000000 -8 true false 7 false true -8000000 -8 false false No definition available. No authoritative reference available. false 22 Recognition of noncontrolling interest in a consolidated subsidiary 3 us-gaap_MinorityInterestIncreaseFromStockIssuance us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true 8000000 8 true false 7 false true 8000000 8 false false No definition available. No authoritative reference available. false 23 Cash dividends paid on common stock $1.00, $1.20 and $1.40 per share, in the year 2007, 2008 and 2009 respectively 3 us-gaap_DividendsCommonStockCash us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -165000000 -165 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -165000000 -165 false false No definition available. No authoritative reference available. false 24 Shares issued: 3 lll_SharesIssuedAbstract lll false na duration string Shares issued false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false Shares issued false 25 Employee savings plans 4 us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 139000000 139 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 139000000 139 false false No definition available. No authoritative reference available. false 26 Employee savings plans, Shares 4 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 2000000 2.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 27 Exercise of stock options 4 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 28000000 28 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 28000000 28 false false No definition available. No authoritative reference available. false 28 Exercise of stock options, Shares 4 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 500000 0.5 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 29 Employee stock purchase plan 4 us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 70000000 70 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 70000000 70 false false No definition available. No authoritative reference available. false 30 Employee stock purchase plan, Shares 4 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1100000 1.1 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 31 Stock-based compensation expense 3 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 74000000 74 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 74000000 74 false false No definition available. No authoritative reference available. false 32 Treasury stock purchased 3 us-gaap_TreasuryStockValueAcquiredCostMethod us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true -505000000 -505 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -505000000 -505 false false No definition available. No authoritative reference available. false 33 Treasury stock purchased, Shares 3 us-gaap_TreasuryStockSharesAcquired us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true -7000000 -7.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false 34 Other 3 us-gaap_StockholdersEquityOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 2000000 2 true false 3 false false 0 0 true false 4 false true -1000000 -1 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 1000000 1 false false No definition available. No authoritative reference available. true 35 Other, Shares 3 lll_StockholdersEquityOtherShares lll false na duration shares Stockholders equity other. false false false false false false false false false 1 false true 200000 0.2 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false Stockholders equity other. No authoritative reference available. true 36 Ending Balance at Dec. 31, 2009 3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 true true 1000000 1 true false 2 true true 4448000000 4448 true false 3 true true -1824000000 -1824 true false 4 true true 4108000000 4108 true false 5 true true -166000000 -166 true false 6 true true 93000000 93 true false 7 true true 6660000000 6660 false false No definition available. No authoritative reference available. false 37 Ending Balance, Shares at Dec. 31, 2009 3 us-gaap_SharesIssued us-gaap true na instant shares No definition available. false false false true false false false true false 1 false true 115400000 115.4 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. false false 7 82 false Millions HundredThousands UnKnown false true