2.2.0.7 false Condensed Consolidated Statements of Operations (Unaudited) (USD $) 0120 - Statement - Condensed Consolidated Statements of Operations (Unaudited) true false In Millions, except Per Share data false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ 3 Net sales: 1 us-gaap_SalesRevenueNetAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 4 Products 2 us-gaap_SalesRevenueGoodsNet us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 true true false false 1921000000 1921 false false false 2 true true false false 1884000000 1884 false false false 3 true true false false 3635000000 3635 false false false 4 true true false false 3646000000 3646 false false false xbrli:monetaryItemType monetary Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 false 5 Services 2 us-gaap_SalesRevenueServicesNet us-gaap true credit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 2045000000 2045 false false false 2 false true false false 2045000000 2045 false false false 3 false true false false 3955000000 3955 false false false 4 false true false false 3919000000 3919 false false false xbrli:monetaryItemType monetary Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 true 6 Total net sales 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 3966000000 3966 false false false 2 false true false false 3929000000 3929 false false false 3 false true false false 7590000000 7590 false false false 4 false true false false 7565000000 7565 false false false xbrli:monetaryItemType monetary Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 true 7 Cost of sales: 1 us-gaap_CostOfGoodsAndServicesSoldAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 8 Products 2 us-gaap_CostOfGoodsSold us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 1674000000 1674 false false false 2 false true false false 1690000000 1690 false false false 3 false true false false 3162000000 3162 false false false 4 false true false false 3256000000 3256 false false false xbrli:monetaryItemType monetary Total costs related to goods produced and sold during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 false 9 Services 2 us-gaap_CostOfServices us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 1850000000 1850 false false false 2 false true false false 1822000000 1822 false false false 3 false true false false 3576000000 3576 false false false 4 false true false false 3516000000 3516 false false false xbrli:monetaryItemType monetary Total costs related to services rendered by an entity during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 true 10 Total cost of sales 2 us-gaap_CostOfGoodsAndServicesSold us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 3524000000 3524 false false false 2 false true false false 3512000000 3512 false false false 3 false true false false 6738000000 6738 false false false 4 false true false false 6772000000 6772 false false false xbrli:monetaryItemType monetary The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 true 11 Operating income 1 us-gaap_OperatingIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 442000000 442 false false false 2 false true false false 417000000 417 false false false 3 false true false false 852000000 852 false false false 4 false true false false 793000000 793 false false false xbrli:monetaryItemType monetary The net result for the period of deducting operating expenses from operating revenues. No authoritative reference available. false 12 Interest and other income, net 1 us-gaap_NonoperatingGainsLosses us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 8000000 8 false false false 2 false true false false 6000000 6 false false false 3 false true false false 12000000 12 false false false 4 false true false false 9000000 9 false false false xbrli:monetaryItemType monetary The aggregate amount of gains (losses) resulting from nonoperating activities (for example, interest and dividend revenue, property, plant and equipment impairment loss, and so forth.) Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 false 13 Interest expense 1 us-gaap_InterestExpense us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 72000000 72 false false false 2 false true false false 69000000 69 false false false 3 false true false false 136000000 136 false false false 4 false true false false 135000000 135 false false false xbrli:monetaryItemType monetary The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 false 14 Debt retirement charge 1 lll_DebtRetirementCharge lll false debit duration The aggregate costs related to the retirement of debt, including call premium and the write-off of deferred debt issuance... false false false false false false false false false false false totallabel false 1 false true false false 13000000 13 false false false 2 false false false false 0 0 false false false 3 false true false false 13000000 13 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary The aggregate costs related to the retirement of debt, including call premium and the write-off of deferred debt issuance costs. No authoritative reference available. true 15 Income before income taxes 1 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 365000000 365 false false false 2 false true false false 354000000 354 false false false 3 false true false false 715000000 715 false false false 4 false true false false 667000000 667 false false false xbrli:monetaryItemType monetary Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 false 16 Provision for income taxes 1 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 134000000 134 false false false 2 false true false false 127000000 127 false false false 3 false true false false 262000000 262 false false false 4 false true false false 239000000 239 false false false xbrli:monetaryItemType monetary The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b true 17 Net income 1 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 231000000 231 false false false 2 false true false false 227000000 227 false false false 3 false true false false 453000000 453 false false false 4 false true false false 428000000 428 false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 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 AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) false 18 Less: Net income attributable to noncontrolling interests 1 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 3000000 3 false false false 2 false true false false 2000000 2 false false false 3 false true false false 4000000 4 false false false 4 false true false false 4000000 4 false false false xbrli:monetaryItemType monetary The portion of net income (loss) attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 true 19 Net income attributable to L-3 1 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 228000000 228 false false false 2 false true false false 225000000 225 false false false 3 false true false false 449000000 449 false false false 4 false true false false 424000000 424 false false false xbrli:monetaryItemType monetary The 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 false 20 Less: Net income allocable to participating securities 1 lll_NetIncomeAllocableToParticipatingSecurities lll false debit duration Net income allocable to participating securities. false false false false false false false false false false true negatedtotal false 1 false true false false 1000000 1 false false false 2 false true false false 2000000 2 false false false 3 false true false false 3000000 3 false false false 4 false true false false 4000000 4 false false false xbrli:monetaryItemType monetary Net income allocable to participating securities. No authoritative reference available. true 21 Net income allocable to L-3 Holdings' common shareholders 1 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic us-gaap true credit duration No definition available. false false false false false false false false false false true negatedtotal false 1 true true false false 227000000 227 false false false 2 true true false false 223000000 223 false false false 3 true true false false 446000000 446 false false false 4 true true false false 420000000 420 false false false xbrli:monetaryItemType monetary Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 9 true 22 Earnings per share allocable to L-3 Holdings' common shareholders: 1 us-gaap_EarningsPerShareAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 23 Basic 2 us-gaap_EarningsPerShareBasic us-gaap true na duration No definition available. false false false false false false false false false false false totallabel true 1 true true false false 1.97 1.97 false false false 2 true true false false 1.91 1.91 false false false 3 true true false false 3.85 3.85 false false false 4 true true false false 3.58 3.58 false false false us-types:perShareItemType decimal The amount of net income or loss for the period per each share of common stock outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 36, 37, 38 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 true 24 Diluted 2 us-gaap_EarningsPerShareDiluted us-gaap true na duration No definition available. false false false false false false false false false false false totallabel true 1 true true false false 1.95 1.95 false false false 2 true true false false 1.9 1.9 false false false 3 true true false false 3.82 3.82 false false false 4 true true false false 3.56 3.56 false false false us-types:perShareItemType decimal The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 11, 12, 36 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 true 25 L-3 Holdings' weighted average common shares outstanding: 1 us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 26 Basic 2 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 115400000 115.4 false false false 2 false true false false 116500000 116.5 false false false 3 false true false false 115700000 115.7 false false false 4 false true false false 117400000 117.4 false false false xbrli:sharesItemType shares Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 true 27 Diluted 2 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 116500000 116.5 false false false 2 false true false false 117200000 117.2 false false false 3 false true false false 116700000 116.7 false false false 4 false true false false 118000000 118.0 false false false xbrli:sharesItemType shares The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 true 4 25 false Millions HundredThousands NoRounding false true